Exam 4 Part 9 Flashcards Preview

Biology 150 > Exam 4 Part 9 > Flashcards

Flashcards in Exam 4 Part 9 Deck (20):
1

gland

cell, tissue, organ that produces a specific substance for use in, or elimination from, the body

2

exocrine gland

secretes products directly to body surface or into ducts that lead to body surface; part of various systems

3

endocrine gland

ductless; secrete products directly to blood (or surrounding interstitial fluids); comprise own system (although no anatomically contiguous

4

hormones

chemical substance produced by endocrine system, carried by blood to specific target for specific effect
work with nervous system

5

hormones chemically can be

proteins, steroids, amines

6

pituitary

2 lobes of different embryonic origins
anterior pituitary
posterior pituitary

7

anterior pituitary

outgrowth from near roof of pharynx
produces and secretes seven major hormones (most function on growht an development by stimulation other endocrine glands to secrete other hormoes)

8

posterior pituitary

outgrowth of hypothalamus (via infundibulum)
does not produce hormones but stores and releases 2 hormones produced by hypothalamus

9

hypothalamus

produces many different hormones
some go to anterior pituitary where they regulate secretion of different hormones produced by the AP; these hormones travel via a blood vessel network (hypothalamohypophyseal portal system)
some go to the posterior pituitary where they are stored and later released; these hormoens travel via neuronal transport

10

pineal gland

attached to epithalamus
function not well known, produces melatonin

11

thyroid

inferior to larynx; 2 lobes wrap around trachea, connected only anteriorly
many follicles lined with cuboidal epithelium - secrete thyroid hormones to follice
hormones affect growth and development, and metabolic rate (1 important, Ca regulation)

12

parathyroid

4 (2-6) embedded in posterior lobes of thyroid;
Ca2++ regulation

13

thymus

review from lymphatic system (hormones stimulate T lymphocytes)

14

adrenal

retroperitoneal, one on superior surface of each kidney
cortex:3 zones >25 different steroid hormones
medulla: adrenaline

15

pancreas

islet cells
2 main cell types produce 2 major hormones that regulate blood sugarlevels

16

gonads

female: ovaries in pelvic cavity; sex hormones: estrogens and progesterone
male: testes in scrotum; sex hormone testosterone

17

stomach, duodenum

digestive hormones

18

kidneys

hormones affecting RBC products, bp, and C and P levels

19

uterus

placenta: pregnancy hormones

20

heart

hormone that affects blood pressure regulation