Neuromuscular junction

One neuron and all the skeletal muscle cells it stimulates is the ____ ___.

• Neurotransmitter

• Neuromuscular junction

• Motor unit

• Synaptic cleft

The gap between the nerve cell and sarcolemma is the ____ ___.

• Synaptic cleft

• Neurotransmitter

• Motor unit

• Neuromuscular junction

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

• GABA

• Acetylcholine

• Serotonin

• Dopamine

What is the name of the component that houses the neurotransmitters?

• Synaptic cleft

• Acetylcholine

• Receptors

• Synaptic vesicles

Which of these events must occur first to trigger the skeletal muscle to generate an action potential and contract?

• Potassium ions diffuse out of the muscle cell.

• Acetylcholine (ACh) binds to receptors on the sarcolemma and allows passage of sodium ions into the cell.

• The sodium-potassium pump restores sodium and potassium back to their initial positions.

• Acetylcholinesterase (AchE) breaks down acetylcholine (ACh).

Neurotransmitters are released upon stimulation from a nerve impulse from the ________.

• axon terminals of the motor neuron

• myofibrils

• sarcolemma of the muscle cell

• sarcoplasmic reticulum

•The location on the muscle fiber at the end of the axon terminal.

• motor end plate
• dendrites
• subneural clefts
• synaptic cleft

point where an axon terminals of a nerve cell and the sarcolemma of a skeletal muscle join

• acetylcholine (Ach)
• ATP
• cross bridges
• neuromuscular junction

plasma (cell) membrane of a muscle cell

• sarcolemma

• sarcoplasmic reticulum

• thick filament

• thin filament