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31 terms

Thermoregulation, Excretory System, Nervous System, Muscular System

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thermoregulation
what body temperature is maintained by
conduction
heat moves from a higher place of higher to lower temperature
convection
heat transfer by airflow
evaporation
water leaves body as sweat
radiation
heat loss through electromagnetic waves
CNS (central nervous system)
brain and spinal chord, voluntary movement
PNS (peripheral nervous system)
sensory and motor division
ANS (autonomic nervous system)
controls involuntary movement
neuron
functional system of nervous system
dendrite
bring nerve impulses to cell body
axon
away from cell body to target cells
sensory neurons
synaptic connections with other neurons
depolarized
threshold potential reached
re-polarized
potential back to initial levels
neurotransmitters
diffused through a gap in synaptic knob
cerebellum
coordination and balance
medulla oblongata
control of involuntary activity in brain
hypothalamus
thermo, hunger, and hydration regulator
amyglada
controls impulsive emotions and anger
cerebrum
separated into four parts, by one corpus callosum
frontal lobe (cerebrum)
speech, motor cortex
parietal lobe (cerebrum)
speech, taste, reading, somatosensory
occipital lobe (cerebrum)
vision
temporal lobe (cerebrum)
hearing and smell
skeletal muscle
voluntary activity, multiple nuclei per cell, striated appearance
smooth muscle
involuntary muscle, contracts slowly, controlled by ANS, lines important organs and tracts
cardiac muscle
heart muscle, multiple nuclei
neuromuscular junction
where acetylcholine from neurons is released to muslces
myosin
powers muscle contraction
actin
what myosin attached to, exchange ATP and ADP
tropomyosin
regulates muscle contraction by blocking where myosin and actin come together