Module 1

Question 1

Define physiology

Answer 1

The study of function in living organisms

Question 2

Define homeostasis

Answer 2

the maintenance of relatively stable conditions within the internal environment regardless of what is happening in the external environment

Question 3

Describe negative feedback control systems

Answer 3

Set point changes, control center (nervous system) sends signal to effector organs to alter controlled variable, sensor/receptor will detect changes and react accordingly

Question 4

List the levels of organization in the human body

Answer 4

atoms -> molecules -> macromolecules -> organelles -> cells -> tissues -> organs -> systems -> organism

Question 5

Define internal environment

Answer 5

the fluid surrounding the cells in our body, consisting of the interstitial fluid and blood plasma

Question 6

Define external environment

Answer 6

the region outside the body, including the space and contents of the digestive, respiratory, and urogenital tracts

Question 7

Name some negative feedback examples

Answer 7

thermal regulation (body temp), hormones, blood pressure

Question 8

Name some positive feedback examples

Answer 8

action potentials, labour contractions, breast milk production, LH surge (causes ovulation)