Muscle

Question 1

Define motor unit

Answer 1

a motor nerve and the cells it innervates. they work together to coordonate the contractions of a single muscle cell

Question 2

Define muscle tone

Answer 2

The contious and passive partial contraction of the muscle, or the muscle resistance to passively strech

Question 3

Explain motor unit recruitment

Answer 3

Activation of additional motor units to accomplish an increase in contractile strength in a muscle

Question 4

Explain muscle fatiuge

Answer 4

The decline of a muscle to generate force.

Question 5

What are the two types of muscle fatiuge?

Answer 5

Metabolic fatiuge- reduce ability of muscle fibre to contract.
Neural fatiuge- limitated ability of a nerve to generate substained signals.

Question 6

What is a dyamometer?

Answer 6

measurement of the power of muscle contraction (clench force)

Question 7

What happends when holding an object, regards to motor units?

Answer 7

The number of motor units will increase, the smalles motor units will activate first, follow by the larger motor units.