Endocrine System And Homeostatic Control

Question 1

When sugar is low describe the response in the pancreas

Answer 1

Releases glucagon, produced by the alpha cells, which promotes the breakdown of glycogen into glucose

Question 2

When sugar is high describe the response in the pancreas

Answer 2

Insulin is released, by the beta cells, to reduce the sugar in the blood

Converts glucose to glycogen

Question 2

What’s the endocrine system

Answer 2

A system of glands that regulates bodily functions via hormones emitted into the bloodstream

Question 3

The pancreas produces the hormones in what specialized cells

Answer 3

The islets of langerhans, which contain both alpha and beta cells

Question 5

How do the adrenal glands maintain body sugar levels

Answer 5

It increases sugar level by releasing hormones.
Epinephrine and norepinephrine both promote the breakdown of glucose..
Glucocorticoids increase amino acids in the blood which can be converted to glucose.

Question 6

Where are T3 and T4 produced?

Answer 6

In the thyroid

Question 7

Describe the role of T3 and T4.

Answer 7

Increases metabolism by increasing the rate of cellular respiration.

Question 8

Describe the feedback loop to regulate a low metabolism

Answer 8

Hypothalamus (sensor) releases TRH, which triggers the pituitary gland (integrator). TSH is the effector which acts on the thyroid releasing T3 and T4.

Question 9

Describe the action of Calcitonin, and where it is produced

Answer 9

Produced in the thyroid.

lowers the [calcium] by decreasing osteoclasts and decreasing the reabsorption of calcium in the nephrons

Question 10

Describe the action of Parathyroid Hormone

Answer 10

Raises the [calcium] by increasing the activity of osteoclasts and increasing the reabsorption of calcium in the nephrons

Question 11

What other system does the endocrine system work closely with?

Answer 11

The nervous system and endocrine system work together to ensure homeostatic balance throughout the body.