During skeletal muscle contraction, adjacent ________ are pulled closer together as the ________ between them shorten.
A. Z disks; A bands
B. I bands; A bands
C. A bands; I bands
D. Z disks; M lines
Answer: C
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During what time frame do limb buds appear in a conceptus?
A. Day 56 B. Day 37 C. Day 16 D. Between days 24 and 28 E. The timing of appearance is variable.
A example of genetic change is the presence of certain DNA sequences occurring in different numbers of copies in different individuals.
Answer the following statement true (T) or false (F)
The renal vein is a branch of the __________
Fill in the blank(s) with correct word
Which of the following statements about larger lymphatics is incorrect?
A. They have thicker walls than veins. B. They have valves. C. The tunica media has smooth muscle and elastic fibers. D. The tunica externa is relatively thin. E. The endothelium of the tunica interna is similar to that of veins.