In the diagram, which structure helps return a stretched sarcomere to its resting length?
a) B
b) C
c) E
d) Both B and C
e) All of these choices are correct.
c
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In a ________ muscle, the fascicles are concentrically arranged around an opening
A) convergent B) parallel C) straight D) pennate E) circular
Astrocytes produce myelin for the cells of the central nervous system.
Indicate whether the statement is true or false.
What are desmosomes?
A. low-resistance channel-like passages that let ions travel between the interiors of adjacent cells B. cell organelles that contain enzymes for digesting cellular debris and foreign microbes C. cellular organelles that transcribe RNA into DNA D. membrane-bound vesicles that pinch off from the plasma membrane and enter the cell E. dense plaques of proteins that maintain firm attachments between adjacent cells
Trace the path of a red blood cell from the renal artery to the glomerulus: (1) interlobar artery (2) interlobular artery (3) segmental artery (4) arcuate artery (5) afferent arteriole
A. 1, 2, 3, 4, 5 B. 1, 4, 2, 3, 5 C. 3, 1, 2, 4, 5 D. 2, 1, 3, 5, 4 E. 1, 4, 3, 2