click below
click below
Normal Size Small Size show me how
HaneyEndocrine1
Question | Answer |
---|---|
Endocrine glands secrete what into the blood? | chemicals (hormones) |
What general functions do hormones perform? | communication and control |
cells acted on by hormones are called? | target cells |
organs containing target | target organs |
nonsteroid hormones | first messengers |
Hormone secretion is controlled by? | homeostatic feedback |
negative feedback | mechanisms that reverse the direction of a change in a physiological system |
positive feedback | (uncommon) mechanisms that amplify physiological changes |
Prostaglandins | are powerful substances found in a wide variety of body tissue |
TSH | stimulates growth of the thyroid gland |
ACTH | Stimulates growth of the adrenal cortex and stimulates it to secrete glococortioids |
FSH | initiates growth of ovarian follicles each month in the ovary and stimulates one or more follicles to develop to the stage of maturity and ovulation |
LH | acts with FSH to stimulate estrogen secretion and follicle growth to maturity |
GH | Stimulate growth by accelerating protein anabolism |
PRL or lactogenic hormone | Stimulates breast development during pregnancy and secretion of milk after the delivery of the baby |
ADH | accelerates water reabsorption from urine in the kidney tubules into the blood thereby decreasing urine secretion |
Oxytocin (OT) | stimulates the pregnant uterus to contract |
What secrets Glucagon | alpha cells |
What secrets Insulin | beta cells |
Anterior pituitary gland | Adenohypophysis |
Posterior pituitary gland | neurophypophysis |
Where is the thymus located | mediastinum |
example of positive feedback | labor |