Endocrine System Flashcards
(77 cards)
Hormones work on specific cells called _______________
target cells
The glands of the endocrine system secrete chemical messengers called ___________
hormones
Hormones secreted by the endocrine gland travel directly to the blood stream and therefore are called ____________ glands
ductless
Hormones relay signals by either attaching to a _____________ on the membrane of a target cell or by entering the cell’s ______________.
receptor, nucleus
Activities affected by hormones:
a. ________________
b. ________________
c. _________________
tissue growth (cell division)
metabolism
reproduction
The pituitary gland is basically controlled by the ____________
hypothalamus
The hormone oxytocin released for the pituitary gland has what 2 functions:
a. ___________________________________
b. ___________________________________
uterus contraction during childbirth
milk production for nursing
The hormone, also sent from pituitary gland that helps maintain water balance in the kidneys is called ______
ADH
The pituitary gland is composed of _______ lobes, the anterior and posterior which secrete different kinds of hormones.
2
The Human Growth Hormone target cells are primarily ____________ cells and ____________ cells.
bone, muscle
The _______________of glucose provides our body with energy (ATP).
oxidation
At rest, the body’s glucose and oxygen are delivered to your cells at a relatively low rate and that rate is called the ________________________.
basal metabolic rate
Clusters of cells within the pancreas called Islets of Langerhans secrete the hormone __________ that takes glucose out of the blood and gives it to your cells.
insulin
______________ decreases blood sugar
insulin
_______________ increases blood sugar
glucagon
The pancreas also secretes glucagons. What is its function?
Glucagons stimulate the liver to make glucose to make it more available to the body’s cells.
Adrenaline can also be called ___________________.
epinephrine
List 4 effects of adrenaline on the body in times of stress:
a) ___________________________
b) ___________________________
c) ____________________________
d) ____________________________
stimulates liver to release more glucose into the body
reduces flow of blood to internal organs
increases heart rate
increases breathing rate
The secretions of the adrenal gland are controlled by the ____________________
pituitary gland
Normal body metabolism is controlled by the ____________________
thyroid gland
The hormone thyroxin targets which cells of your body?
all of them!
People who produce too much thyroxin have a condition called ________________, but people who do not produce enough thyrxoin have the condition known as _________________.
hyperthyroid, hypothyroid
The hormones PTH and calcitonin produced by the parathyroid gland function to regulate calcium within the blood. Explain how each works to control calcium levels in the blood.
Parathyroid secretes PTH when calcium levels are high. Thyroid — calcitonin —- lowers blood calcium (osteoblast) —- build up
Parathyroid secretes less pTH when calcium levels are low. Parathyroid — PTH — raises blood calcium (osteoclasts)
Endocrine glands that control reproduction in the male and female are the ___________ in the male and the ________ in the female.
testes, ovaries