QUIZIZZ - Neuromuscular Junction

What is the gap between the axon terminal of one neuron and the dendrite of the next neuron called?

• Synapse

• Node of Ranvier

• Joint

• dendrite

What is the specific neurotransmitter that stimulates the movement of skeletal muscles?

• GABA

• Acetylcholine

• Serotonin

• Dopamine

The location where the motor neuron reaches the sarcolemma of the muscle fiber is the _____.

• Neurotransmitter

• Acetylcholine

• dendrite

• Neuromuscular Junction

What is the name of the structure that stores neurotransmitters?

• Synaptic cleft

• Acetylcholine

• Receptors

• Synaptic vesicles

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

The neurotransmitter stored in the axon terminal identified as #3

• Acetylcholine
• Protein Channel
• Calcium Ion (Ca²⁺)
• Syanptic Cleft

Skeletal Muscle contraction is initiated when the ________ sends a message/signal to the muscle cell.  

• Muscle cell

• Motor Neuron

• Gland

• None of the above

The organelle within muscle cells that store calcium ions

• mitochondria

• smooth endoplasmic reticulum

• sarcomere

• sarcoplasmic reticulum

A crossbridge is

• when the myosin head binds to actin

• when calcium ions attach to troponin

• when the ACh attaches to the sarcolemma

• when the T-tubles stimulate the sarcoplasmic reticulum

The two regulatory proteins that are attached to the actin myofilament are

• myosin and troponin

• collagen and myosin

• troponin and tropomyosin

• albumin and hemoglobin