FLASHCARDIZZ - Neuromuscular Junction

Front

What is the organelle within muscle cells that stores calcium ions?

Back

Sarcoplasmic reticulum.

Front

What neurotransmitter stimulates the movement of skeletal muscles?

Back

Acetylcholine.

Front

What initiates skeletal muscle contraction?

Back

Motor Neuron.

Front

Where does ACh diffuse to attach during muscle contraction?

Back

Receptors on the sarcolemma.

Front

What neurotransmitter is stored in the axon terminal?

Back

Acetylcholine.

Front

What is the role of the sarcoplasmic reticulum in muscle cells?

Back

It stores and releases calcium ions to trigger muscle contraction.

Front

What is the synaptic cleft?

Back

The space between the motor neuron and the muscle cell where neurotransmitters are released.

Front

What is the function of acetylcholine in the neuromuscular junction?

Back

It binds to receptors on the muscle cell to initiate contraction.

Front

What happens when acetylcholine binds to its receptors?

Back

It causes depolarization of the sarcolemma, leading to muscle contraction.

Front

What is the role of calcium ions in muscle contraction?

Back

Calcium ions bind to troponin, causing a conformational change that allows myosin to bind to actin.