Cellular Communication

Question 1

What does signaling involve

Answer 1

both extracellular and intracellular molecules attaching to receptors

Question 2

What is the endocrine system an example of?

Answer 2

a system that uses signaling to control function

Question 3

How to cells communicate

Answer 3

sending and receiving signals

Question 4

What are the signals that cells use to communicate

Answer 4

molecules which act on a target cell that have an internal or external receptor for that ligand

Question 5

What qualify as signaling molecules

Answer 5

chemicals, proteins, lipids, nucleic acids and dissolved gases such as nitric oxide

Question 6

Where are most receptors found

Answer 6

on the cell surface

Question 7

Intracellular receptors

Answer 7

cells located within the cell

Question 8

Endocrine glands

Answer 8

found throughout the body

Question 9

pituitary gland

Answer 9

major endocrine gland

Question 10

Where is the pituitary gland located

Answer 10

at the base of the brain below the hypothalamus

Question 11

What does the hypothalamus regulate

Answer 11

the secretion of pituitary hormones

Question 12

What does the hypothalamus control

Answer 12

a variety of physiological processes, acting in many different organs of the body

Question 13

What 6 physiological processes are controlled by the hypothalamus

Answer 13

growth
reproduction
water retention
breast development
metabolic rate
stress response