human body systems pt 2 Flashcards
(41 cards)
endocrine system
regulates metabolism
levels of organization in living things
cells, tissue, organ, organ system
muscles
allow you to move
homeostasis
maintains relatively constant internal conditions
neurons are classified by
the direction they carry impulses
neurotransmitters
transmit nerve impulses across synapses
how do nerve impulses travel
axon - dendrite
cerebrum
controls higher thought processes
rods
see black and white
cones
see color
stimulants
drugs that increase heart rate, blood pressure, breathing
depressants
drugs that slow the CNS
axial skeleton
skull, vertebral column, rib cage
bones
store minerals, move body parts, protect organs, made of cartilage
osteoblast
cell type that builds bone
types of joints
ball & socket, hinge, gliding
tissue types
muscle, nervous, connective, epithelial
cardiac
found in the heart
actin & myosin
proteins involved in muscle contraction
blood flow through heart
right atrium - right ventricle - pulmonary artery - left atrium - left ventricle - aorta
types of striated muscle
skeletal and cardiac
valves
found in veins
arteries
thicker than veins
capillaries
smallest vessels