31 Which of the following causes blood to move through veins? Select one: a. con

Question

31 Which of the following causes blood to move through veins?

Select one:

a. contraction of skeletal muscle

b. blood pressure

c. vasodilation

d. contraction of smooth muscle

32 MHC markers are molecules that signal to the immune system that particular cells belong to a host.

Select one:

True

False

33 Which of the following are protein filaments that function in muscle contraction and are shaped like a golf club with two heads?

Select one:

a. myosin filaments

b. intermediate filaments

c. actin filaments

d. myofilaments

34 Astronauts returning to Earth from an extended stay in space have to be extremely careful not to break a bone. It takes several weeks to restore normal bone strength. Which would be the best regimen to rebuild the lost bone tissue?

Select one:

a. Several weeks of swimming will rebuild all lost bone mass.

b. Stay inactive, avoiding exercise until the lost bone tissue is rebuilt.

c. Start with walking and build up to jogging, with an extra regimen of light weight lifting in the gym.

d. Hit the gym and get going with a few weeks of heavy weight lifting.

35 The attachment point of a muscle to a bone that can move is called the ________.

Select one:

a. synergistic

b. insertion

c. antagonistic

d. origin

36 Ringworm is caused by a(n) insect

Select one:

True

False

37 Athlete's foot is caused by a(n) ________.

Select one:

a. bacterium

b. insect

c. virus

d. fungus

38 A child has a bicycle accident and is rushed to the ER. The doctors stop the bleeding, but the child needs a transfusion. Fortunately, the patient is AB-positive, so the doctors can give him ________.

Select one:

a. any blood type

b. AB negative or positive only

c. O positive only

d. O negative only

39 ) Which of these are the smallest of veins that form when capillaries merge?

Select one:

a. venules

b. veins

c. arterioles

d. arteries

40 the most correct sequence of signals is the SA node > AV node > AV bundle > Purkinje fibers

Select one:

True

False

Explanation / Answer

31 c. vasodilation causes blood flow through veins.

32 b

33 a. myosin is shaped like a golf club with 2 heads.

34. c

36. false. Ringworm is a fungal infection

37 d caused by a fungus like Microsporum

38. AB negative or positive . Option b

39 a Venules

40 a

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