Although many cells undergo mutation during an animal's lifetime, malignancy is rare since
a. only a small fraction of the genome encodes proteins involved in cell cycle regulation, so the probability of mutation of these genes is low.
b. generally multiple mutations are required to turn a normal cell into a cancer cell.
c. immune surveillance results in nascent cancer cells being eliminated by cytotoxic T-cells.
d. all of these.
e. none of these.
D
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Organize the following muscular connective tissues from smallest to largest: epimysium, perimysium, fascia, endomysium.
A. Fascia, epimysium, perimysium, endomysium B. Fascia, endomysium, perimysium, epimysium C. Perimysium, epimysium, endomysium, fascia D. Endomysium, perimysium, epimysium, fascia
Which statement regarding gastric motility and emptying is incorrect?
a. Increased fluidity allows more rapid emptying. b. Presence of acid and fat in the stomach initiates the enterogastric reflex. c. Increased gastric volume stimulates motility. d. Vagal activity stimulates motility. e. Distention of the stomach initiates short reflexes.
The muscles that form the fleshy mass at the base of the little finger are known as the ________ group.
Fill in the blank(s) with the appropriate word(s).
What type of connective tissue forms most of the skeleton before it is replaced by bone?
A. dense irregular elastic tissue B. elastic cartilage C. fibrocartilage D. dense regular collagenous tissue E. hyaline cartilage