Homeostasis

Question 1

Homeostasis

Answer 1

the ability of an organism to seek and maintain a stable environment regardless of external factors

Question 2

control systems

Answer 2

~adjust internal & external changes
~temp, glucose, pH, water

Question 3

principle of feedback

Answer 3

feedback systems are the mechanisms that maintain homeostasis by returning an environment bac to its tolerance or optimum range.

Question 4

negative feedback loop

Answer 4

process where your body reverses a change that’s occurring, regulating the body

Question 5

positive feedback loops

Answer 5

process where your body encourages change, important when rapid change is needed

Question 6

increased blood glucose

Answer 6

~beta cells secrete insulin
~effects - skeletal muscle, adipose tissue, liver
~glucose uptake by muscle & adipose tissue
~glucose converted to glycogen in the liver (glycogenesis)

Question 7

decreased blood glucose

Answer 7

~Alpha cells secrete glucagon
~effects - liver cells, body cells
~glycogen stores in the liver break down into glucose (glycogenolysis)
~ reduced use of glucose by most body cells

Question 8

symptoms of hyperglycaemia

Answer 8

~Increased thirst
~frequent urination
~low energy levels
~extreme hunger
~blurred vision