D3.3 Homeostasis

Question 1

Homeostasis

Answer 1

The ability of the body to seek and maintain equilibrium

Question 2

Secretion of Insulin

Answer 2

Secreted by beta cells in the pancreas, in response to increased glucose levels

Question 3

Function of insulin

Answer 3

Promotes liver cells and muscles to store glucose as glycogen, reducing glucose in bloodstream

Question 4

Secretion of glucagon

Answer 4

Secreted by alpha cells in the pancreas, in response to decreased glucose levels

Question 5

Function of glucagon

Answer 5

Promotes breakdown of glycogen in the liver and fat, releasing glucose into the bloodstream

Question 6

Islets of Langerhands

Answer 6

Located in the pancreas, secretes alpha & beta cells

Question 7

Type I Diabetes

Answer 7

Autoimmune attack on beta cells inhibiting insulin production | insulin dependent, early onset

Question 8

Type II Diabetes

Answer 8

insufficient production of beta cells due to developed insulin resistance | lifestyle changes; reduction in weight, exercise, late onset

Question 9

Thermoregulation

Answer 9

process in which body maintains constant internal temperature despite external environment

Question 10

Thyroxine temperature regulation

Answer 10

Release of thyroxine hormone increases the rate of metabolic processes in thyroid, increasing temperature

Question 11

Vasodilation

Answer 11

warm conditions: blood vessels widen, moving to the surface of the skin, increasing heat loss

Question 12

Vasoconstriction

Answer 12

cold conditions: blood vessels narrow, moving toward internal organs, decreasing heat loss

Question 13

Osmoregulation

Answer 13

Regulation of water and solute concentration of body fluids; expressed in osmoles