A&P part 5

Question 1

Lipid-soluble hormones bind to

Answer 1

Receptors within target cells

Question 2

Water-soluble hormones bind to receptors

Answer 2

on the exterior surface of the target cell

Question 3

How a target cell responds to a hormone is based on

Answer 3

• hormones concentration in blood
• number of receptors on the target cells
• influences exerted by other hormones
• some hormones work more effectively when a second hormone is present to assist them (synergistic effect)
  -some hormone oppose the action of others (antagonistic effect)

Question 4

Synergistic effect

Answer 4

Some hormones work more effectively when a second hormones is present to assist them

Question 5

Antagonistic effect

Answer 5

When some hormones oppose the action of others

Question 6

Examples of synergistic

Answer 6

Epinephrine &Norepinephrine

Hormones act in concert

Question 7

Examples of antagonistic

Answer 7

Insulin & glucagon

Insulin decreases blood glucose levels
Glucagon increases it

Question 8

Hormones are secreted in short bursts. Secretion is regulated by:

Answer 8

• signals from nervous system
• chemical changes in blood
• other hormones

Question 9

Most hormone regulation is achieved via

Answer 9

Negative feedback.

Reversal process

Question 10

Only a few hormones operate via

Answer 10

Positive feedback

Question 11

The hypothalamus & Pituitary gland work together to

Answer 11

Control other endocrine glands

Question 12

How much weight does the anterior lobe make up & how many hormones does it secrete?

Answer 12

• 75% of Pituitary gland
• 7 hormones

Question 13

What is the posterior gland made up of and how many hormones does it store and release

Answer 13

• neural tissue
• 2 hormones by the hypothalamus

Question 14

The hypothalamus secretes ____and _____ hormones that control the release of hormones by the Pituitary gland

Answer 14

• releasing
  -inhibiting

Question 15

Anterior Pituitary secretes

Answer 15

-GH
-TSH
-FSH
-LH
-PRL
-ACTH
-MSH

Question 16

Growth hormone

Answer 16

• promotes growth of body tissue

Question 17

Thyroid-stimulsting hormone (TSH)

Answer 17

• stimulates synthesis and secretion of thyroid hormones by thyroid gland

Question 18

Follicle- stimulating hormone (FSH)

Answer 18

In females, initiates development of oocytes and induces ovarian secretion of estrogens
In males- stimulates testis to produce sperm

Question 19

Lueinizing hormone(LH)

Answer 19

Females- stimulates secretion of estrogen and progesterone, ovulation, and formation of corpus luteum

Males- stimulates testes to produce testosterone

Question 20

Prolactin

Answer 20

Promotes milk production

Question 21

Adrenocorticotropic hormone (ACTH)

Answer 21

Glucocorticoids(mainly cortisol)

Question 22

Melanocyte stimulating hormone(MSH)

Answer 22

Exact role is unknown but may influence brain activity. When present in excess, can cause darkening of skin