Question

question 37
vessels that carry blood toward the heart are called

question 38
which of the following statements regarding carbon dioxide is false:
it plays an important role in the bodys defense against changes in acidity.
it is a by - product of energy metabolism.
it binds with hemoglobin to form a compound called carbaminohemoglobin.
it moves from tissue into blood via active transport by special protein channels.

question 39
the primary role of the cardiovascular system is:
pumping the heart
ventilating the lungs
supplying tissues with oxygen and nutrients
removing metabolic by - products
both c and d

Explanation:

• Question 37: Veins are the blood - vessels that carry blood towards the heart.
• Question 38: Carbon dioxide moves from tissue into blood via simple diffusion, not active transport by special protein channels. The other statements about carbon dioxide are true.
• Question 39: The primary role of the cardiovascular system is to supply tissues with oxygen and nutrients and remove metabolic by - products.

Answer:

• Question 37: Veins
• Question 38: It moves from tissue into blood via active transport by special protein channels.
• Question 39: Both supplying tissues with oxygen and nutrients and removing metabolic by - products.