Homeostasis

Question 1

What is homeostasis

Answer 1

Maintaining the balance in the body

Question 2

Negative feedback homeostasis processes in the human body (High Glucose)

Answer 2

High glucose
1. The glucose activates the gutt recepetors in the pancreas
2. This tells the pancreas that the glucose is too high
3. The pancreas then makes insulin to signals it to the cells in the body
4. The insulin tells the protein channels to open to remove glucose from the blood into the cells
5. Which will result in the glucose decreasing

Question 3

Negative feedback glucose (Low)

Answer 3

Low glucose
1. When the glucose is low it will bind to the gutt receptors of the pancreas
2. The pancreas will make glycogan which will bind to the liver receptors
3. The liver will break down molecules of glycagon or take molecules of lactic acid/ amino acids and make them into glucose through glycagongenesis
4. The liver will push the glucose to the bloodstream
5. resulting in increased glucose

Question 4

Negative feedback body tempertaure

Answer 4

Cold temp
1. The cold temp activates the thermorecptors
2. The thermorecptors send signals to the hypothalamus which will then send a signal down to the signal cord
3. The signal will go to the blood vessels causing vasculation and a decrease in sweat (evaporation sweat)
4. The signal will also go to the muscles activating ATP causing the muscles to shiver
5. Resulting in warming up the body

Question 5

Negative Feedback Body temperature

Answer 5

Hot temp
1. Hot temp activates the thermorecptors
2. The thermorecptors send signals to the hypothalamus and the hypothalamaus sends a signal down the spinal cord
3. The signal goes to the blood vessels making vasodilation and increase of sweat (a thin layer of sweat appears and the wind blows releasing heat from the body)
4. The signal also goes to the muscles making them decrease the atp to minizise the shivering in the muscles
5. Resulting in the body cooling down

Question 6

Positive feedback stretching

Answer 6

When giving birth the cervix is stretched out to release the baby
1. the cervix stretches which activates the stretch receptors in the uterus
2. The stretch receptors send a signal to the hypothalamus and the posterior pituitary
3. the hypothalamus activates the pituitary to relases oxytocin
4. the oxytocin binds with the receptors in the uterus , helping it move the baby down by causing uterine contractions
5. Resulting in the baby being released