Skeletal, Muscular and Nervous Systems

Question 1

what is ACh

Answer 1

acetylcholine is released at the neuromuscular junction when vesicles containing this neurotransmitter merge with the membrane.

Question 2

A chronic dietary deficiency in calcium would have the same effect on bone as

Answer 2

abnormally high osteoclast activity.

Question 3

what is the sympathetic nervous system?

Answer 3

fight or flight response.
Increase heart rate, pupil dilation, increase in respiration, bronchial dilation, more blood to the skeletal muscle and away from digestive organs. Increase in adrenaline.

Question 4

A spike in action potential across the axonal membrane is due to

Answer 4

Increased permeability to Na+

Question 5

what is a monosynaptic reflex arc

Answer 5

reflex that does not require and interruption in the spinal cord to function

Question 6

Osteoclast

Answer 6

Break down bone, release calcium into the blood.

Question 7

Osteoblast

Answer 7

Build up bone, remove calcium from the blood.

Question 8

Which type of muscle is always multinucleated?

Answer 8

Skeletal Muscle.

Skeletal muscle is responsible for voluntary movement and is innervated by the somatic nervous system