How can we help?

You can also find more resources in our Help Center.

29 terms

Endocrine System

Hormones & Glands
STUDY
PLAY
Endocrine System
slower to respond, long-lasting effects, hormones & target tissues, hypothalamus
Nervous System
fast acting, nerve impulses, hypothalamus
Pituitary gland
master gland
Thyroid
secretes thyroxin, controls metabolic rate
Testies
testosterone/androgens
Parathyroid
for glands embedded in the thyroid; secretes parathormone; controls announces level of calcium and phosphate (which influence levels of excitability)
Adrenal
gland which increases heart rate, blood pressure, and breathing rate
Pancreas
located partially behind the stomach in the abdomen, and it functions as both an endocrine and exocrine gland. It produces digestive enzymes as well as insulin and glucagon
Ovaries
located one on each side of the uterus in the female pelvis, functioning to secrete estrogen and progesterone
Thymus
the primary gland of the lymphatic system, located within the mediastinum; helps maintain the body's immune response by producing T lymphocytes
Steriods
estrogen, testosterone, aldosterone, cortisol, cholesterol
Amino acid-based
Amines, thyroxine, peptide, and protein hormones
Target cells
cells that have receptors for a particular hormone
hormones
chemical messengers that are manufactured by the endocrine glands, travel through the bloodstream, and affect other tissues
Negative feedback mechanisms
The most common homeostatic control mechanism. The net effect is that the output of the system shuts off the original stimulus or reduces its intensity.
Pineal body
a structure found between the cerebral hemispheres of vertebrates; secretes melatonin
Oxytocin
stimulates contraction of uterus and the milk "letdown" reflex; pituitary
ADH
hormone that increases the reabsorption of water; pituitary
Growth hormone
a hormone produced by the anterior pituitary gland, Stimulates growth and metabolism
Prolactin
Stimulates milk production; anterior pituitary
Thyroxine
hormone produced by the thyroid glands to regulate metabolism
Calcitonin
reduces blood calcium level; thyroid
PTH
increases blood calcium level; parathyroid
Insulin
Pancreas; protein hormone that helps to decrease blood sugar
Glucagon
a hormone secreted by the pancreas, Raises blood glucose
Testosterone
affects masculinization and reproduction; testies
Androgens
Support sperm formation; development and maintenance of male secondary sex characteristics; testies
Estrogens
stimulate uterine lining growth; development and maintenance of female secondary sex characteristics
Progesterone
promotes growth of uterine lining; Ovaries