Question

1. The bones of the middle ear can not only recover the pressure intensity lost at the air-fluid interface, but can also amplify it.

True or False

2. Information from both ears is kept separate until it reaches the auditory cortex.

True or False

3. One muscle is composed of many muscle fibers, all of which are from the same motor unit.

True or False

4. Compared to the spinal cord, the midbrain seems to be more involved in voluntary body movement.

True or False

Answer 1

1) The bones of the middle ear can not only recover the pressure intensity lost at the air-fluid interface but can also amplify it. - TRUE (When sound wave are coming from the outer environment, at first it reaches to eardrum then from there oval window, and then the middle ear, here amplification happened before it reaches to the inner ear )

2)Information from both ears is kept separate until it reaches the auditory cortex. - TRUE

3)One muscle is composed of many muscle fibers, all of which are from the same motor unit- FALSE(It means all muscle fibers of a muscle are from one motor unit but that is not true, many muscles have more than one motor unit and the muscle fiber of that muscle is also distributed between motor units. )

4) Compared to the spinal cord, the midbrain seems to be more involved involuntary body movement -TRUE