Siya Gokhale Chaper 6: Myology

How many muscles are in the body?

650.

What are the two general characteristics of muscles?

Excitability and contractability.

what does excitability mean?

The ability to have electrical signals and action potential.

What does contractility mean?

The ability to get smaller.

What are the only two cells in the body that exhibit excitability?

Muscle and nerve cells.

What are the three functions of the muscles?

Voluntary movement, body posture, and heat production.

What is the tendon of origin commonly called?

The head or “ceps.”

What does the tendon of origin connect to?

The less movable structure.

What is the tendon of insertion commonly called?

The tail of the muscle.

What does the tendon of insertion connect to?

The more movable side.

What are the three layers of fascia?

Epimysium, perimysium, endomysium.

What does a somatic motor consist of?

Somatic motor neurons and the fibers they stimulate.

What are proprioceptors?

Sensory neurons that supply muscles.

What is an agonist?

The main muscle being used.

What is a synergist muscle?

Muscle that acts with the agonist.

What is an antagonist muscle?

The muscle that works against the agonist.

What is a fixator or stabilizer?

A muscle that stabilizes to body to keep it from moving around too much.

What are the characteristics of muscles that are used in maximal training?

Anaerobic and low myoglobin.

What are the characteristics of muscles that are used in sub-maximal training?

Aerobic and with high myoglobin.

Frontalis