Neuromuscular Function Flashcards
afferent sensory information goes to _____ horn
dorsal
efferent signals to muscles and glands via the _____root
ventral
Where on the Neuron is the neurotransmitter picked up
dendrite
T or F schwann cells are the primary covering in the CNS
F PNS they help to transmit the signal faster
Action potential is a _______ signal?
chemical or electrical
electrical
Two types of cells that are “excitable”
Nerve and Muscle (capable of generating rapid electrochemical impulses at membranes)
outside of membrane is ____ with respect to the inside
positive
T or F to change Membrane potential, you need a lot of ions
F only a small volume of ions contribute to MP therefore, only small number of ions really need to rush in to revers MP
what is the name of the cell membrane of a muscle cell
sarcolemma
what is the cytoplasm of a muscle cell called
sarcoplasm
myofibrils are unique to muscle cells and are…
strands of actin and myosin
the unique part of the alpha motor neuron is
it’s axon are wrapped in schwann cells
RMP of large nerve cells/axons
-80 to -90mV
what are potasium Leaky channels
channels permeable to K+. will move from greater to less concentration
for every ___ Na+ out, ____ K+ come in
3, 2
