Neuromuscular junction worksheet

the transmitter substance in the neuromuscular junction

• Noradrenaline

• Acetylcholine

• Dopamine

• GABA

Once the action potential reaches the end of the axon terminal what takes place?

• ACh is released into the synaptic cleft.

• Calcium is pumped into the sarcolemma.

• Calcium is pumped into the AT.

• The muscle contracts.

Once calcium is pumped into the axon terminal what happens?

• The muscle contracts

• ACh is released into the synaptic cleft.

• Sodium pumps into the sarcolemma.

• The muscle contracts.

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

• Synaptic cleft

• Acetylcholine

• Receptors

• Synaptic vesicles

Once ACh binds to receptor cells on the sarcolemma (plasma membrane of the muscle fiber), what takes place?

• Sarcolemma becomes temporarily permeable to sodium.

• The muscle contracts.

• Calcium is pumped into the axon terminal.

• Synaptic vesicles move to the end of the terminal.

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

• Neurotransmitter

• Acetylcholine

• Synaptic cleft

• Neuromuscular Junction

What is number 6 pointing to?

• a muscle cell

• a synaptic vesicle

• a neurotransmitter

• a neuron

What is the function of this entire diagram?

• controlling a nerve

• controlling a skeletal muscle contraction

• endocytosis

• inserting a musle on a bone

Identify structure 2 in the diagram.

• synaptic cleft

• motor end plate

• axon terminal

• ACh

Identify structure 1 in the diagram.

• synaptic cleft

• motor end plate

• axon terminal of motor neuron

• ACh