Neuromuscular Junction

Neuromuscular Junction

10th - 12th Grade

10 Qs

quiz-placeholder

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Neuromuscular Junction

Neuromuscular Junction

Assessment

Quiz

Mathematics

10th - 12th Grade

Hard

Created by

Charles Martinez

FREE Resource

10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

One neuron and all the skeletal muscles it stimulates is known as a ________.

sarcoplasmic reticulum

motor unit

synaptic cleft

neuromuscular junction

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the unstoppable electrical current that travels down the length of the entire surface of a sarcolemma?

neurotransmitter

graded response

acetylcholine

action potential

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is released by axon terminals into the synaptic cleft to stimulate a muscle to contract?

potassium ions

sodium ions

acetylcholine

actin

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why are calcium ions necessary for skeletal muscle contraction?

Calcium ions increase the speed of the action potential transmitted along the sarcolemma.

Calcium ions release the inhibition on Z discs.

Calcium ions trigger the binding of myosin heads to actin filaments.

Calcium ions cause ATP binding to actin.

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is acetylcholine?

an ion pump on the postsynaptic membrane

a source of energy for muscle contraction

a component of thick myofilaments

a neurotransmitter that stimulates skeletal muscle to contract

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The gap between the axon terminal of a motor neuron and the sarcolemma of a skeletal muscle cell is called the ________.

motor unit

synaptic cleft

cross bridge

sarcomere

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What must rush into a muscle cell to promote its depolarization?

potassium ions

calcium ions

acetylcholine

sodium ions

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