Homeostasis essay

Homeostasis essay

Homeostasis Essay Example,References

WebNov 12,  · Homeostasis is the tendency to maintain a stable and relatively constant internal environment. It is crucial for any living thing to maintain a stable internal WebThe process of homeostasis is one of the most critical parts of staying healthy and under control. It works in many ways throughout the entire body, each system playing a WebHomeostasis is a medical state in which organisms are maintained by biochemical and physiology which are two different blogger.com depend on the body environment WebJan 15,  · Homeostasis is the maintenance of a constant internal environment within an organism or cell to maintain equilibrium, usually using a system of feedback controls WebMar 18,  · Homeostasis is the mechanism in our body that regulates and maintains a stable and constant environment. This enables our body to respond to changes in ... read more

Undue and persistent stress such as poor or inadequate sleep, unaccustomed exercises, and inadvertent build up of free radicals in the body, drug abuse and alcoholism are capable of disrupting the body's homeostatic mechanisms which ultimately leads to a disease state. When this happens, medical intervention can help restore the body to the pre-illness state through the actions of the homeostatic mechanisms. There are several examples of homeostasis in the body; some of the very important ones include acid-base balance in the body, temperature regulation, glucose metabolism, calcium metabolism and body fluid volume.

Negative feedback mechanism is an integral part of the proper functioning of the homeostatic mechanisms. It literarily means that whenever there is a change in any of the systems, there is an automatic corrective mechanism which initiates the reversal of the noxious change and brings back the body to the set point also known as the normal. In the simplest of languages, negative feedback could be likened to an oven in use. When it gets too hot, the mechanism that causes the increase in temperature resulting in the heating turns off automatically which allows the oven to cool down. It eventually gets cold since the heating system has been turned off automatically, the heating system then turns on again increasing the temperature of the oven.

In essence, a system exclusively controlled by the negative feedback mechanism is never maintained perfectly as it swings about the set point. However, an efficient homeostatic system reduces the size and frequency of the oscillations. Regulation of the body temperature is an integral part of homeostasis in the body. Animals which maintain a near normal body temperature are called endotherms and sometimes referred to as warm blooded animals. Normally, they maintain their body temperatures between thirty five degrees Celsius and forty degrees Celsius. Mammals and birds are ectotherms. On the other hand, ectotherms have variying body temperatures, though some of them could have warm blood during the day either by basking in the sun or through extended muscle activity such as tuna and bumble bees.

The main difference between ectotherms and endotherms is that endotherms utilize internal corrective mechanisms to maintain homeostasis while ectotherms utilize behavioural mechanisms such as moving into the shade or a cool place when hot or lying in the sun and basking when they feel cold. Body temperature in human beings is controlled by the thermoregulatory centre in the hypothalamus; impulse is received from receptors in the hypothalamus and receptors in the skin. Both are thermoreceptors. The hypothalamic receptors monitor the core temperature which is the temperature of the blood is it navigates through the brain. Receptors in the skin especially those on the trunk monitor the external temperature. The two sets of information are required for the body to make appropriate adjustments, impulses are then sent from the thermoregulatory centre to the different effectors to adjust the body temperature.

However, when these responses are inadequate, the thermoregulatory centre is then stimulated. The heat loss centre of the hypothalamus is stimulated when we feel too hot and the heat conservation centre is stimulated when we are too cold. During excessive heat, vasodilatation, sweating, pilorelaxation and stretching out all help the body loose heat. The arterioles increase in size so as to allow more blood into the capillaries in the skin leading to heat loss. Also, sweat glands secrete sweat in response to heat. The sweat produced removes heat from the body and gives a cooling effect on the body. Also, hairs on the skin are laid flat. This prevents whatever trapped air from heating the body by insulating it.

Likewise, when the body feels too cold vasoconstriction, shivering, piloerection all occur. The arterioles reduce in calibre and get smaller reducing blood supply to the skin to keep the inner body warm. Also, rapid contraction and relaxation of the skeletal muscles leads to shivering which produces heat to keep the body warm. Curling up and making the surface area of the body smaller reduces the effect of the cold on the body. In addition, the hairs on the skin rise, giving rise to goose pimples thereby trapping hair between the skin and the atmosphere creating an insulation against the cooler air.

In conclusion, Homeostasis is highly important for the survival of living beings so as to regulate the milieu of the body which is subject to fluctuations periodically as various disease states and even death may occur due to a faulty homeostatic mechanism. pdf L. A Zaykoski. Note: this sample is kindly provided by a student like you, use it only as a guidance. ID Password recovery email has been sent to email email. Don't waste time. I agree. HIRE A WRITER Sign in. World of Writing Hub Blog Free Essay Writing Tools Quizzes and Tests Essay Topics Types of Essays Free Essay Examples.

Who We Are Contact Us Our Writers Our Guarantees FAQ Honor Code WowEssays Reviews Our Services. ORDER PAPER LIKE THIS. Cite this page Choose cite format: APA MLA Harvard Vancouver Chicago ASA IEEE AMA. Accessed 07 February Homeostasis Essay Example. January Accessed February 07, Retrieved February 07, com, Jan Free Essay Examples - WowEssays. Published Jan 19, In the brain the hypothalamus controls everything and changing them to fit into the outside surroundings. Negative feedback is also linked in as it is the process of homeostasis. Homeostasis is the existence of a stable environment in the body for survival. This process is always regulating bodily functions in order to keep the body in optimal condition. When conditions change a receptor senses and sends a message to a control center.

The control center processes the information and sends an appropriate command to effectors. These effectors will respond to the command which will stimulate a positive or negative response. A positive response will stimulate the increase of the change. For example if a person got a cut, the response from the effector would be to help stimulate clotting in the cut area. A negative response would attempt to cancel out the change, such as when the body becomes too hot or cold. When this happens the effectors cause veins and arteries to expand or narrow in order to increase or decrease blood flow. The way homeostasis works is very similar to the way cruise control works.

While traveling on a relatively normal road, the cruise control will keep the car at a certain speed and only use a certain amount of fuel. As the car travels on a hill, sensors notice and send the information to the engine. The engine will send a command to the necessary places to send more or less fuel into the engine in order to maintain speed. Homeostasis occurs due to a control mechanism in the body known as negative feedback. Negative feedback occurs when a key variable, such as the PH of blood and tissue fluid, deviates from the acceptable range, and triggers responses that return the variable to a normal range. In basic terms, negative feedback triggers a response that counteracts the deviation which will allow the variable to stay in the normal range.

Negative feedback comes when an important variable, sometimes known as a key variable such as the pH of blood and tissue fluid. Homeostasis is the process of maintaining a constant internal environment in response to changes in the external environment. Homeostatic mechanisms are for regulating; body temperature, blood glucose, heart rate and breathing rate. The first concept is homeostasis. Many people identify homeostasis with body temperature and blood pressure. Homeostasis in the body can be looked at as a regulator that keeps the body well balanced.

A great example of this would be, as mentioned before, body temperature. If the body is hot, homeostasis allows the body to sweat so that it may cool off. If the body is cold, homeostasis makes the body shiver to warm up. In looking at homeostasis we see that the human body is a wonderfully working machine. To survive, an organism must be able to maintain stable internal conditions in a changing environment. This process is called homeostasis. Notice the Air temp. and Body temp. thermometers representing the air temperature and body temperature. With all of the activities going on in the organism, there must be guidelines and limits that the body must follow in order to preserve health. thermostat and heater and temp regulation in the hypothalamus.

Homeostasis is the ability of an open system to regulate its internal environment to maintain stable conditions by means of multiple dynamic equilibrium adjustments controlled by interrelated regulation mechanisms. All living organisms, whether unicellular or multicellular, exhibit homeostasis. P6: Follow guidelines to interpret collected data for heart rate, breathing rate and temperature before and after a standard period of exercise. Homeostasis- The steady state of body functioning; the tendency to maintain relatively constant conditions in the internal environment even when the external environment changes.

Homeostasis is dependent on negative feedback to give it signals to…. The environment around us is continually changing and poses difficulties for the body to carry out its internal processes. Homeostasis is the maintenance of a constant internal environment within the body regardless of changes in either external or internal conditions. It allows a certain degree of independence from the environment. Homeostasis - ability to maintain relatively stable internal conditions even though the outside world changes continuously; maintaining the internal environment within physiological units…. Homeostasis is the need for an organism or a cell to regulate its internal environment conditions within the fluid surrounding its body cells by a system of feedback controls to stabilise health and functioning despite the outside changing conditions.

This is important as this is what maintains and helps internal conditions body temperature to remain stable and constant. HOME ESSAYS Essay On Homeostasis. Essay On Homeostasis Better Essays. Open Document. Essay Sample Check Writing Quality. Ever wonder why the body shivers when it gets cold? Homeostasis keeps body conditions steady and constant. So, this means that when the body shivers, that is homeostasis taking place trying to keep your body temperature at a constant degree. Homeostasis maintains normality in the body in many different ways.

Ever wonder why the body shivers when it gets cold? Homeostasis keeps body conditions steady and constant. So, this means that when the body shivers, that is homeostasis taking place trying to keep your body temperature at a constant degree. Homeostasis maintains normality in the body in many different ways. Some examples include osmoregulation, thermoregulation, chemical regulation, and behavioral homeostasis. While homeostasis controls these processes, homeostasis must also go through a separate process of its own in order for things like osmoregulation to be carried out. These processes will be explained in depth throughout the paper. Homeostasis uses negative and positive feedback when a sensor is alerted in the body.

The sensors will alert the brain, and then the brain decides whether to activate either negative or positive feedback based on the situation it is trying to control. One process of homeostasis is called osmoregulation. Osmoregulation helps maintain a constant state in the body by cleaning out all of the extra water, salt, and urea in the body. Osmoregulation cleans the unnecessary particles out of the body by sending them out through the kidneys, urinary bladder, ureters, urethra, pituitary glands, and the lungs. Osmoregulation is considered a homeostasis process because in order to keep things such as the kidneys and the bladder constant and steady, being cleaned out is a very important part in keeping those things working correctly ck12, February 15, Another process of homeostasis is thermoregulation.

Thermoregulation is the process of the body maintaining a constant body temperature. The body performs thermoregulation by sweating and dilating the blood vessels in order to bring the body temperature back down to a constant degree. If the body temperature is too low, the body will begin to shiver, constrict the blood vessels, and provide insulation in order to bring the body temperature back up to the steady degree. The insulation used in this process comes from adipose tissue and a breakdown of tissue combined ck12, February 15, Homeostasis will also cool the body down by pilorelaxation. Homeostasis can also bring the body temperature up by piloerection. This is when the hairs on the body stand up so heat can be taken in and bring the body temperature back up to a constant degree.

There are two types of heat regulation when it comes to the thermoregulation process, endothermic and exothermic. Endothermic heat occurs in mammals, for example humans. An endothermic organism regulates its own body temperature. However, an organism that is exothermic, their body temperature is usually relatively close to the temperature of the environment in which it lives in Claydon, January 1, Thermoregulation uses multiple body parts in order to achieve its goal of maintaining a constant body temperature. The body parts that are involved and used in thermoregulation include the muscular system, nerves, blood vessels, skin, and adipose tissue ck12, February 15, In addition to the processes above, chemical regulation also occurs in homeostasis.

Chemical regulation aids in maintaining homeostasis by regulating the glucose levels in the body. This is completed by secreting insulin and glucagons into the blood stream to either bring up or lower the glucose level. Chemical regulation also adjusts the breathing rate based on the amount of carbon dioxide levels in the blood stream. In addition to that, chemical regulation also keeps the creating of red blood cells constant by releasing erythropoietin from the kidneys ck12, February 15, Chemical regulation can also involve the hormonal system. The hormones that the body needs are created in the area of the pancreas called the islets of Langerhans.

If there happens to be a rise or spike in the glucose levels, beta cells will detect the rise or spike. After the beta cells are alerted, the cells will then make more insulin. The extra insulin that was created in the pancreas would then be used to link together receptor proteins in the liver. That allows for more protein channels to be opened up, and that allows the glucose to enter the beta cell. Once the glucose has entered the cell, it will then be converted into glycogen Claydon, March 9, Another major process of homeostasis is called behavioral homeostasis. Behavioral homeostasis is very similar to thermoregulation. Behavioral homeostasis performs much like a thermostat in a house would work. For example, if a thermostat was set at a certain degrees and the temperature of the room was falling, the thermostat would turn the heat on until that constant, set temperature is maintained.

If the temperature in the room began to rise, the thermostat would kick on the air conditioning unit until the room temperature was back down to the constant degree. Homeostasis, the controlling of all of the inner bodily functions, might sound like a simple process. However, homeostasis has its own process that can also get quite complicated. Homeostasis does not simply just happen. In order for these things to occur, there is a process behind osmoregulation, thermoregulation, chemical regulation, and behavioral homeostasis also. In order to maintain a constant state, other functions must go on even before beginning the process of returning to normality. These functions are known as negative and positive feedback. Negative feedback is the part of homeostasis that kicks in when a system needs to be slowed down or stopped completely.

An example of negative feedback taking place would be when a person is eating. Digestion of the food starts when it reaches the stomach. Hormones and nervous impulses are used to stop and start acids from releasing from the stomach. Another example of negative feedback taking place would be when the body begins to over heat. Negative feedback will sense the body over heating, so it will stop the rise of the body temperature. This causes the body to sweat. On the other hand, positive feedback is the part of homeostasis that supports the system that is carrying out the job. Positive feedback can be thought of as an encouragement factor to help the system work more efficiently and effectively. Whether it is felt or not, positive feedback is constantly occurring in the body over and over again until it is stopped by a negative feedback.

A great example of positive feedback taking place would also occur in the stomach. The pepsinogen that is created in the stomach is then converted into an enzyme commonly known as pepsin. This process is repeated over and over again until there is a sufficient amount of pepsin molecules to digest all of the proteins that are in the stomach Rader, February 12, Something has to occur to make them happen also. Inside the body, there are millions of little sensors. These sensors are present all over the body so that if there happens to be a spike, rise, or a drop in the supply of an item or particle that is necessary to the body, they can detect that.

If a sudden spike, rise, or drop is detected, the sensor will then send an alert signal to the brain and let it know what is going on. After the brain has been alerted, it will then activate either negative or positive feedback based on what is needed to solve the problem with the body system. Then, either negative or positive feedback will be activated, and either stops the process completely, slows the process down, or encourages the process so that it works effectively and completes the task in which it has been assigned Ohio Assessments for Educators, March 10, On the other hand, homeostasis can also occur in plants, grasses, and flowers.

In plants, photosynthesis is referred to as homeostasis. Photosynthesis is the process of releasing water from the plant, and taking in carbon dioxide. It is necessary for photosynthesis to be carried out. If photosynthesis is not performed and a plant does not maintain a constant state, it will wilt and die just like a human would. The stomata of the plant would be the place where all the gases, like carbon dioxide, could enter the cell through, and the water could also leave the cell through here.

In every stomata, there is an object called a guard cell. The guard cells only open for special reasons. They open to take in carbon dioxide, and to release water. The guard cell will also open on rare, needy occasions. For example, the guard cell will also open when the plant is running low on the availability of water. These structures help the plant maintain its version of homeostasis Buckley, January 16, As you can see, homeostasis is a very vital, important factor in keeping humans and other organisms alive and thriving. With out osmoregulation, thermoregulation, chemical regulation, and behavioral homeostasis, the body would not be able to function in the way that it is designed to work.

This will eventually cause all of the organs inside of the body to begin to shut down. This will result in almost certain death. However, without negative and positive feedback, homeostasis itself would not even occur. That is why even the tiny objects inside of the body, for example sensors, play such an important role in the process of homeostasis. The body does not react or adjust to change very well. So, it is important for homeostasis to be present and keep all of the systems going at a constant state in order for humans to be alive and healthy. This is even true with plants also. If homeostasis photosynthesis is not taking place and working correctly, the plant will also almost certainly wilt and die.

That is why homeostasis is an extremely important and necessary function that all living organisms must have in order to survive.

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WebMar 18,  · Homeostasis is the mechanism in our body that regulates and maintains a stable and constant environment. This enables our body to respond to changes in WebHomeostasis is a medical state in which organisms are maintained by biochemical and physiology which are two different blogger.com depend on the body environment WebNov 12,  · Homeostasis is the tendency to maintain a stable and relatively constant internal environment. It is crucial for any living thing to maintain a stable internal WebThe process of homeostasis is one of the most critical parts of staying healthy and under control. It works in many ways throughout the entire body, each system playing a WebMar 27,  · Homeostasis describes how the body regulates its process to keep its internal conditions as stable as possible. Homeostasis is necessary because human WebJan 15,  · Homeostasis is the maintenance of a constant internal environment within an organism or cell to maintain equilibrium, usually using a system of feedback controls ... read more

Essay on Homeostasis. These processes will be explained in depth throughout the paper. Image credit: Homeostasis: Figure 4 by OpenStax College, Biology, CC BY 4. If the body is cold, homeostasis makes the body shiver to warm up. With a life span of , the heart will beat two to three billion times and circulate million gallons of blood.

We use homeostasis essay which you can view and control. The body can regulate its internal environment through feedback systems. The heart rate, the cardiac output and the blood pressure change to different degrees of bodily activity, homeostasis essay. Homeostasis is the process of maintaining equilibrium and stable conditions within the internal environment known as extracellular fluid. Therefore, the limiting resource of the prey induces negative feedback, which counteracts the initial increase in predator abundance. Homeostasis is maintained at many levels, not just the level of the whole body as it is for temperature.