Endocrine system Flashcards
Endocrine system
sends signals by passing hormones through the bloodstream. secreted through glands in the brain
Glands
Organs in the body that secrete chemicals
Hormones
Chemical messengers that must bind to a receptor to send their signal. Slower to effect but last longer. Some hormones are chemically identical to neurotransmitters.
Pituitary gland
“Master gland” Most influential gland, controls stress, growth, and reproduction. Controlled by hypothalamus.
Cortisal
Main stress hormone, controls mood, motivation, and fear. Made by adrenal glands.
Oxytocin
Love hormone. Regulates social interaction and sexual reproduction.
Thyroid gland
Secretes thyroxin and controls growth, metabolism, and appetite. Located in lower neck. Damage leads to lack of sleep, concentration, depression and sensitivity.
Pineal gland
Located in the brain, secretes melatonin.
Adrenal glands
Releases epinephrine and norepinephrine (adrenaline) Aids in sympathetic arousal when under stress. Located on top of each kidney.
Gonads
Sex glands including ovaries and testis. Release estrogen and testosterone, respectively.
