changes that follows hormone binding
#1
changes plasma membrane permeability or membrane potential (electric state) by opening or closing ion channels
steroids do this because they are lipid-solube and can diffuse throughout the plasma membrane of target cells
direct gene activation
pancreas and gondas
#1
made up of glands that produce and secrete hormones, chemical messengers
secretion outside the body like sweat
exocrine secretion
#2
activate or inactivate enzymes
bind to target cells hormone receptors on the plasma membrane; sets off a series of reactions that activates an enzyme
second messenger system
pancreas do what
helps the body maintain healthy glucose levels
#2
Regulations of growth metabolism, sexual development
secretion inside the body like adrenaline
endocrine secretion
#3
stimulate or inhibit enzymes
what is the master gland
pituitary gland
thymus produces a hormone that does what
#3
responds to stress and injury
what is a negative feedback look
when the levels go above or below a set point like a thermostat
#4
promote or inhibit secretion of a product
what gland secretes melatonin to aid in your sleep/wakefulness cycles
pinal gland
what is the real master gland
hypothalamus
#4
maintains homostasis
when contractions push the baby against the cervix during labor, the brain releases the hormone oxytocin which strengthens contractions. this is a example of what?
positive feedback loop
#5
turn on or turn off transcription of certain cells
what are the 2 stress hormones
ACTH and cortisol
chemical messengers that act on target cells to regulate the metabolic activity of other cells in the body
hormones
what are the 2 types of hormones
amino acid based molecules and steroids
secretion in which a proportion of the cell is pinched off and becomes the secretory product?
Apocrine secretion