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Endocrine System

Terms in this set (16)

endocrine system
a system of ductless glands in various parts of the body that manufacture and secrete hormones into the bloodstream or lymph fluids, thus affecting cells in other parts of the body (chemical communication)
hormones
substance manufactured and released in one part of the body that affects other parts
- organs whose cells have receptors for a hormone are called target organs
hormones also affect brain ....
development, contributing to sex differences in the brain and behavior
pituitary gland
the endocrine gland located in the brain and often called the "master gland" which releases hormones that control other endocrine glands and which also releases a growth hormone
- controlled by ***HYPOTHALAMUS**
thyroid gland
produces the important hormone thyroxin, which regulates the rate at which food is metabolized
pancreas
contains insulin and glycogen and puts them in bloodstream (autonomic)
adrenal glands (3 things about them)
1. sympathetic nervous system
2. small sex hormones
3. fight vs flight preparation
Endocrine system negative feedback
system which means that if a hormone rises above a certain level, feedback about the situation signals the brain and pituitary to stop stimulating that hormone's secretion
immune system
serves as a sensory system that monitors the internal state of the body and as a protective system for detecting and destroying invading cells and toxic substances
autoimmune disorders
- when body attacks itself
- sees normal cells as abnormal and works to kill them
interactions between immune and nervous system
true
stress can alter..
the outcome of disease
immune responses can be..
taught
ex: taste aversions
animal studies have shown that stimulating or damaging parts of the brain that control the ANS can...
enhance or impair immune functions
activation of immune system can produce...
changes in activity of the brain, neurotransmitter activity, hormonal secretion and behavior including symptoms of behavior
some of the same chemical messengers are found...
in the brain and the immune system
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