Neuromuscular Junction

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

What is number 6 pointing to?

• a muscle cell

• a synaptic vesicle

• a neurotransmitter

• a neuron

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

• Muscle cell

• Motor Neuron

• Gland

• None of the above

What type of chemical is number 7 pointing to?

• neurotransmitter

• an ACh receptor

• a neuron

• a cell wall

Which of the following numbers is known as an Acetylcholine receptor?

• #1

• #2

• #3

• #4

What is A?

• Mitochondrion

• Synaptic Cleft

• Motor Neuron

• Sarcolemma

What is H?

• Fusing Synaptic Vesicles

• Folds of the Sarcolemma

• Sarcoplasm of the Motor Neuron

• Enzymes of the Motor Neuron

What is C?

• Sarcoplasm

• Mitochondrion

• Sarcolemma

• Synaptic Vesicle

What is B?

• Acetylcholine Receptors

• Axon Terminal of the Motor Neuron

• Vesicles Containing Acetylcholine

• Sarcoplasm of the Muscle Fiber

What is D?

• Synaptic Cleft

• Synaptic Vesicles

• Sarcolemma

• Acetylcholine