Question

Which of the following is a function of the nervous system?









A.

increasing cellular respiration in muscle tissues








B.

producing lactic acid in fatigued muscle tissues








C.

signaling muscle tissues to contract








D.

releasing ATP into contacting muscle tissues

Answer 1

C

Answer 2

Divers instinctively prevent serious damage to arms and legs by pulling them in close to the body during a dive. Which two organ systems work together to accomplish this?









A.

digestive and circulatory systems








B.

muscular and digestive systems








C.

nervous and muscular systems








D.

circulatory and nervous systems

Answer 3

d

Answer 4

Which of the following is true about a spinal reflex?









A.

It is controlled by the brain.








B.

It is an involuntary response to a stimulus.








C.

It is a voluntary contraction of muscles.








D.

It increases blood flow to muscles.

Answer 5

i think C not 100% sure

Answer 6

k

Answer 7

Its definately not a though