1) which of the following statements is (are) true regarding human muscles?
a) most have both slow and fast fibers.
b) slow fibers are abundant in the calf muscles.
c) eye muscles are composed entirely of fast fibers.
d) slow fibers are abundant in the back muscles.
e) all of the answers are correct.
2) the pigmented skin that surrounds the nipple is the
a) zona reticularis.
b) fornix.
c) zona pellucida.
d) peripapilla.
e) areola.
3)
figure 8-2 the humerus
identify the structure labeled “9”
a) olecranon process
b) medial epicondyle
c) lateral epicondyle
d) greater tubercle
e) trochlea
4) which statement about excitation-contraction coupling is incorrect?
a) calcium ion is released from the transverse tubule.
b) calcium ion is released from the sarcoplasmic reticulum.
c) tropomyosin moves to expose myosin binding sites on actin.
d) troponin binds calcium ion and signals tropomyosin to move.
e) relaxation requires uptake of calcium ion by the sarcoplasmic reticulum.
5) functions of the stomach include all of the following, except
a) storage of ingested food.
b) denaturation of proteins.
c) initiation of protein digestion.
d) absorption of triglycerides.
e) mechanical breakdown of food.
6) cells that are flat and thin are classified as
a) columnar.
b) squamous.
c) blasts.
d) transitional.
e) cuboidal.
7) carbonic anhydrase
a) is in rbcs.
b) is an enzyme.
c) can increase the amount of bicarbonate ion in plasma.
d) can decrease the amount of bicarbonate ion in plasma.
e) all of the answers are correct.
8) nerves and blood vessels that service a muscle fiber are located in the connective
tissues of its
a) endomysium.
b) perimysium.
c) sarcolemma.
d) sarcomere.
e) myofibrils.
9) a typical ejaculation releases approximately ________ sperm.
a) 1 million
b) 250 million
c) 100,000
d) 20 million
e) 800 million
10) blood moves forward through veins because of all of the following, except
a) the pressure in the veins is lower than in the arteries.
b) pumping by the smooth muscle in the wall of the vein.
c) the respiratory pump.
d) valves in the veins preventing the backward flow of blood.
e) muscular compression.
11) the hemisphere of the brain that performs analytical tasks is called the ________
hemisphere.
12) the function of ________ is to propagate electrical signals from one place to
another.
13) how are osteoarthritis and rheumatoid arthritis different?
14) the hollow cavity within the blastocyst is the ________.
15) the suprarenal cortex produces steroid hormones called ________.
16) rabies is caused by a virus that attacks the central nervous system. the virus is
normally introduced by an animal bite that breaks the surface of the skin. since the virus
is not motile, how does it travel to the central nervous system?
17) the extracellular fluid in most tissues is called the ________ fluid.
18) the minimum stimulus required to trigger an action potential is known as the
________.
19) ________ is when the heart can’t maintain adequate cardiac output. (note: be sure to
capitalize the first letter of your answer).
20) the medial malleolus is located on the ________ bone.