When a skeletal muscle fiber contracts, the
A) H bands and I bands get larger.
B) zones of overlap get larger.
C) Z lines move further apart.
D) width of the A band increases.
E) All of the answers are correct.
B
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An oxygen atom can have 8, 9, or 10 neutrons in its nucleus. This variation describes
A) atomic number. B) electric charge. C) bonding characteristics. D) isotopes. E) proton therapy.
On the scapula, the acromion is continuous with the ________.
Fill in the blank(s) with the appropriate word(s).
Choose the INCORRECT match:
A) melano = grey B) chloro = green C) erythro = red D) cyano = blue E) leuko = white
As blood travels from arteries to veins,
A) pressure builds. B) pressure drops. C) flow becomes turbulent. D) viscosity increases. E) diameter of the blood vessels gets progressively smaller.