Homeostasis heat and cold weather, this is

Homeostasis is maintaining a constant
internal balance within the body, which can adjust to extreme external
conditions. Humans can regulate and maintain their body temperature by carrying
out exercise. Due to homeostasis, both the nervous and endocrine system will
maintain a core body temperature, resulting in shivering when it is too cold at
low temperatures or sweating if the temperature rises. During exercise, we can
maintain body temperature as we sweat to cool down. To account for this loss in
water, there will be a decrease in the production of urine. ATP is produced
from the stores of glucose, therefore breathing becomes faster which will
provide the body with more oxygen and heart rate will increase meaning that
blood can be pumped around the body at a faster rate.

The body can maintain our temperature, even
if we are surrounded by extreme conditions e.g. extreme heat and cold weather,
this is due to homeostasis. If we were in extreme heat, homeostasis would occur
to ensure that we survive. The body would start to sweat, and the process of
vasodilation would occur, cooling down the body. The opposite would then happen
if we were in cold atmosphere. The body would start to shiver, producing heat
and vasoconstriction would occur, rising body temperature. If, homeostasis did
not occur this would then start to cause problems as the body would be unable
to recognise the changes within the environment and respond to them
appropriately.

We Will Write a Custom Essay Specifically
For You For Only $13.90/page!


order now

If we are in extremely hot conditions for a
long period of time, the enzymes in the body will start to denature and this in
turn results in the body cells dying. This is known as hyperthermia. Due to
this homeostatic mechanism will stop working and so the hypothalamus can no
longer function. If there is an excessive amount of sweating, too much salt may
be lost from the body, making ions in the blood fall out of balance, leading to
cramps in the muscles. The heart may also start to beat faster as it needs to
maintain blood pressure, therefore blood vessels will dilate.

On the other hand, if the body was exposed
to extremely cold conditions, homeostasis still may not work. Shivering may
occur however, this may not work and so when hypothermia gets more severe it
will stop. Heart rate and breathing rate will decrease and there may also be a
decrease of urine due to the kidneys having a larger workload which also
relates to the blood being shunted to the major organs. If there was no action
taken to support homeostasis then the body would eventually shut down,
resulting in death.

A continuous supply of glucose is required
by the body to carry out normal metabolism. This glucose is then converted to
ATP. The opposite then happens if blood glucose levels fall. In relation to
blood glucose, if there was a homeostatic imbalance it could result in the
development of type 1 diabetes. Diabetes can lead to long term complications
such as heart disease, stroke or kidney disease. Diabetes is an example of what
may happen if the homeostatic mechanism fails.

Homeostasis helps to control breathing
rate. The respiratory centre regulates the breathing rate by sending
information to the brain. This increases carbon dioxide levels in the blood,
and nerve impulses are then sent to respiratory muscles. These muscles are then
informed that they must work harder, ensuring that there is a sufficient supply
of oxygen in the blood. If the mechanism happened to fail, oxygen supplies in
the blood would be insufficient, as there the blood would contain an increased
amount of carbon dioxide. This may cause problems as the body needs oxygen for
all body cells to work efficiently carrying out their bodily functions and
without, the body would shut down.

In conclusion, homeostatic mechanisms in
the body are vital for survival and without such mechanism, it may result in
heart failure and possibly even death.

x

Hi!
I'm Joan!

Would you like to get a custom essay? How about receiving a customized one?

Check it out