Fibers from one motor unit
A. are clustered together within one fascicle of the muscle.
B. are dispersed throughout most of the muscle.
B
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Which embryonic membrane becomes part of the urinary bladder?
A. Amnion B. Yolk sac C. Allantois D. Chorion E. Placenta
Which of the following statements is NOT true?
a. Smooth muscle can be classified according to the timing and means of increasing cytosolic Ca2+. b. In smooth muscle, C-type Ca2+ channels regulate the influx of extracellular Ca2+. c. Smooth muscle tone exists because the muscle has a relatively low resting potential. d. In smooth muscle, Ca2+ binds directly to myosin light chain kinase as opposed to troponin as it does in skeletal muscle. e. Skeletal, cardiac, and smooth muscle differ in the energy source used for contraction.
Which of the following correctly traces blood flow from the renal cortex to the renal vein?
A) Interlobular v. ? interlobar v. ? segmental v. ? renal v. B) Interlobar v. ? interlobular v. ? arcuate v. ? renal v. C) Interlobular v. ? arcuate v. ? interlobar v. ? renal v. D) Arcuate v. ? interlobar v. ? segmental v. ? renal v. E) Segmental v. ? arcuate v. ? interlobar v. ? renal v.
Patches of fibrocartilage formed in the healing of a fracture are called ________, whereas the bony collar formed around the fracture is called ________
A) fracture hematoma; hard callus B) granulation tissue; soft callus C) fracture hematoma; granulation tissue D) granulation tissue; hard callus E) soft callus; hard callus