Physiology of Nerve & Muscle Quiz

What is the function of synapses?

• To produce hormones

• To regulate blood flow

• To transmit nerve impulses

• To store energy

Which type of muscle is attached to the skeleton?

• Adipose tissue

• Skeletal muscle

• Smooth muscle

• Cardiac muscle

What is the structure of a skeletal muscle fiber?

• No nucleus

• Multiple nuclei

• Single nucleus

• Contains only actin filaments

What is the neurotransmitter released at the motor end plate?

• Glutamate

• Serotonin

• Dopamine

• Acetylcholine

What causes the release of calcium into the sarcoplasm during muscle contraction?

• Acetylcholine

• Sodium

• Potassium

• ATP

What is the source of energy needed for sliding of the contractile filaments?

• Cortisol

• ATP

• Insulin

• Glucose

What happens to acetylcholine after binding to the receptor?

• It triggers muscle relaxation

• It remains bound permanently

• It dissociates rapidly

• It converts to serotonin

What is the process that leads to muscle relaxation?

• Inactive process

• Spontaneous process

• Passive process

• Active process

What is the role of calcium in muscle contraction?

• Promotes relaxation

• Inhibits contraction

• Activates contraction

• Has no effect

What is the function of the myoneural junction?

• To connect nerve to muscle

• To transmit electrical signals

• To store nutrients

• To regulate body temperature