Skeletal muscle relaxants

Acetylcholine is the primary neurotransmitter released at the neuromuscular junction.

• True

• False

Voltage-gated calcium channels in the presynaptic terminal open in response to an action potential, leading to acetylcholine release.

• True

• False

1. Calcium ions bind to troponin, causing a conformational change that exposes binding sites on actin.

• True

• False

The sarcoplasmic reticulum is responsible for storing and releasing calcium ions during muscle contraction.

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• False

Skeletal muscle relaxants are commonly used during surgical procedures to facilitate endotracheal intubation.

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• False

Non-depolarizing muscle relaxants work by directly depolarizing the motor end plate to block muscle contraction.

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• False

Depolarizing neuromuscular blockers, such as succinylcholine, mimic the action of acetylcholine at the neuromuscular junction.

• True

• False

Succinylcholine causes an initial transient contraction (fasciculation) before producing sustained muscle relaxation.

• True

• False

Non-depolarizing neuromuscular blockers act by competitively inhibiting acetylcholine at nicotinic receptors on the motor end plate.

• True

• False

Non-depolarizing neuromuscular blockers cause an initial muscle contraction before muscle relaxation occurs.

• True

• False