Motor nerve impulses pass from a neuron to a muscle cell ________. Â Â carried by neurotransmitters across neuromuscular...

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Medical Sciences

Motor nerve impulses pass from a neuron to a muscle cell__. Â Â
carried by neurotransmitters
across neuromuscular junctions
across a synapse
using acetylcholine
all of the choices
Sarcomeres contain thin filaments of and thickfilaments of .Â Â
fast fibers, slow fibers
actin, myosin
hemoglobin, myoglobin
troponin, tropomyosin
creatine, adenosine
The muscular system consists of all the following EXCEPT
sarcomeres
myofillaments
tendons
Voluntary striated skeletal muscle fibers
Voluntary smooth muscle cells
Involuntary striated cardiac muscle fibers
Skeletal muscle contractions are controlled by_ that stimulateor inhibit contraction of sarcomeres.
neuroglia
motor neurons
mitochondria
myoglobins

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3.7 Ratings (411 Votes)

Q1All of these During a Muscle Contraction Motor neurons carry Impulse Which reach the Axon terminal Pre synaptic MembraneThere is opening of Voltage gated Ca2 channelsInflux of ca2This Causes binding of Synaptic vesicels that contain neurotransmitter like Acetyl cholineto the pre synaptic membraneFuses with itRelease NeurotransmitterAcetyl choline to Synaptic cleftBinds to Acetyl choline receptors See Answer

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		carried by neurotransmitters
		across neuromuscular junctions
		across a synapse
		using acetylcholine
		all of the choices

		fast fibers, slow fibers
		actin, myosin
		hemoglobin, myoglobin
		troponin, tropomyosin
		creatine, adenosine

		sarcomeres
		myofillaments
		tendons
		Voluntary striated skeletal muscle fibers
		Voluntary smooth muscle cells
		Involuntary striated cardiac muscle fibers