WS chapter II and III

Question 1

autocrine cell

Answer 1

the endocrine cell is the target of its own secretion

Question 2

paracrine hormone

Answer 2

the messenger acts on neighbouring target cells

Question 3

circulating hormone

Answer 3

messenger carried by blood stream to target cells throughout the body

Question 4

mode of action of hormones

Answer 4

• each hormone acts on a single type of target cell with a specific receptor (lock and key)
• hormone A is recognised by the receptors of target organ A
  (change of metabolism in organ A)
• hormone B is not recognised no effect on organ A and continues to circulate the blood

Question 5

two main characteristics of hormones

Answer 5

1. they act at very low concentrations
2. they act on very specific target organs

Question 6

pituitary gland

Answer 6

regulation of the activity of other endocrine glands

Question 7

testes and ovaries

Answer 7

control of sexual development and reproductive functions

Question 8

pancreas

Answer 8

control of blood and glucose levels