Which cranial nerve stimulates neck and shoulder movements?

Norepinephrine binds to muscarinic receptors.

Opening of Na+ gates at the beginning of an action potential is caused by the activation of a receptor.

During an action potential, Sodium exits the cell causing the membrane potential to become more negative.

The most rapid conduction of an impulse along an axon occurs on a fiber that is

What is the correct sequence of events along an axon that follows a membrane reaching threshold potential?1. The membrane depolarizes.2. Sodium channels open and sodium ions diffuse inward.3. The membrane repolarizes.4. Potassium channels open and potassium ions diffuse outward.

Immediately after an action potential has peaked, which cellular gates are open?

A neuron that has myelin and a large nerve fiber would transmit a signal faster than a neuron with myelin and a small nerve fiber.

The most rapid conduction of an impulse along an axon occurs on a fiber that is

The primary motor cortex is part of the frontal lobe.