Please I need help ASAP. 42) 12) The velocity of blood flow is A) slower in the
ID: 3520227 • Letter: P
Question
Please I need help ASAP.
42) 12) The velocity of blood flow is A) slower in the arteries than in capillaries because arteries possess a relatively large diameter B) slower in the veins than in the capillaries because veins have a large diameter C) slowest in the capillaries because the total cross-sectional area is the greatest D) in direct proportion to the total cross-sectional area of the blood vessels 43) A thrombus (blood clot) in the first branch of the arch of the aorta would affect the flow of blood to 43) the A) left side of the head and neck B) right side of the head and neck and right upper arm C) left upper arm D) myocardium of the heart 44) Where in the body would you find low oxygen levels causing vasoconstriction and high levels 44) causing vasodilation? A) kidney B) lungs C) heart D) liver 45) Normal average blood pressure for a newborn baby is 45) A) 130/80 B) 90/55 C) 150/90 D) 120/80Explanation / Answer
42) The correct option is C. Slowest in the capillaries because the toatl cross-sectional area is the greatest.
Blood flow is slowest in the capillaries, which allows exchange of gases and nutrients.
43) The correct option is B. right side of the head and neck and right upper arm.
A thrombus in the first branch of the arch of the aorta would affect the flow of blood to the right side of the head and neck and right upper arm.
44) The correct option is B. lungs.
Low oxygen levels cause vasoconstriction and high levels cause vasodilation, which occurs in the lungs in the body.
45) The correct option is B. 90/55.
The average blood pressure for a newborn baby is 90/55.