Study Guide Endochrine System Flashcards Preview

Anatomy 205 > Study Guide Endochrine System > Flashcards

Flashcards in Study Guide Endochrine System Deck (17):
1

2

Endocrhrine System

Glands and cells that secrete hormones

3


Hormone


Chemical messengers that are secreted into the bloodstream and stimulate cells and organs

4


Receptor


Accepts only a specific hormone

5


Target tissue

Organ


respond to only specific hormones that their receptors are programmed for

6


endochrine gland

vs

exocrine gland

Endochrine secretes into the blood stream

exocrine secretes into ducts that go to the external environment

7

hormone stimulation


either excite or inhibit

8


nervous system

vs

endochrine system


nervous: fast reacting, stops quickly, .electrical impulses, adapts quickly, localized

endochrine: slow reacting, stops slowly, homone communication, adapts slowly, blood stream distribution

9


pituitary gland


located below hypothalamus connected by infundibulum, in the sella turcica

2 glands, anterior/posterior

contains hormones and directed by hypothalumus to release

 

10


hypothalamus control


releases either inhibiting or excitatory hormones to the pituitary gland

11


Thyroid gland


located in neck below larynx

two conical lobes connected by the isthmus

composed of thyroid follicles lined with cuboidal epithelium

12


Parathyroids


located on posterior of thyroid gland

 

13


Andrenals


located on superior of kidneys

composed of adrenal cortex and adrenal medulla

14


Pancreas


located below and bhind the stomach

composed of 1-2 million cells clusters called pancreatic islets

15


Gonads

(testes, ovaries)

testes located in scrotum

sustentacular cells, interstitual cells

ovaries located in pelvis

granulosa cells, theca, follicles

 

16


Pineal gland


located at roof of third ventricle

resembles a pine cone

17


Thymus


locted in mediastinum superior to heart

bilobed gland

becomes fatty and less glandlike after age 14