Question 47 of 80Points: 10 Which system is responsible for changing the size of

Question

Question 47 of 80Points: 10

Which system is responsible for changing the size of the thoracic cavity for breathing?

respiratory

integumentary

muscular

cardiovascular

Question 48 of 80Points: 10

Skeletal muscles of the head and neck are ________________ to muscles of the thorax.

superior

anterior

posterior

inferior

Question 49 of 80Points: 10

Muscles of the back are located _____________ to muscles of the abdomen.

medial

lateral

ventral

dorsal

Question 50 of 80Points: 10

Muscles that move the shoulder are __________ to muscles that move the hand.

deep

distal

proximal

superficial

Question 51 of 80Points: 10

Which of the following are vessels that contain walls only a single cell layer thick so that exchange of gases and nutrients can more easily occur across them?

lymphatic

arteries

veins

capillaries

Question 52 of 80Points: 10

The left ventricle ejects blood into which of the following structures?

right ventricle

left atrium

aorta

venae cavae

Explanation / Answer

47. Muscular (diaphragm and intercostal muscle change shape of thorax).

48. Superior (as they are above the level of thorax)

49. Dorsal (as they are behind the abdominal muscles).

50. Proximal (as they are closer to tje body)

51. Capillary(this is actual site of exchange of substance near tissue)

52. Aorta (left ventricle into aorta and right ventricle into pulmonary artery. Atrium into their respective (same side) ventricle)

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