Which of the following helps explain the increased tension seen in multiple wave summation?
A. Exposure of more active sites on myosin myofilaments
B. The breakdown of elastic elements in the cell
C. Decreased stimulus frequency
D. Increased motor unit recruitment
E. Increased concentration of Ca2+ around the myofibrils
Answer: E
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Which structure allows upper respiratory infections to spread from the throat to the tympanic cavity?
A. Cochlear duct B. Auditory tube C. Tympanic cavity D. Auditory canal E. Oval window
Muscles including the term "capitis" would be found within or attached to the
A) head. B) neck. C) thorax. D) abdomen. E) groin.
Which statements are correct concerning the parasympathetic division of the ANS?a: Contains preganglionic cell bodies in brainstem nucleib: Contains preganglionic cell bodies in the lateral horns of the T1-L2 regionsc: Participates in the "fight-or-flight" responsed: Helps maintain homeostasise: Contains preganglionic cell bodies in the sacral region of the spinal cord
A. c, d, e B. a, c, e C. b, c, d D. a, d, e E. b, c
What type of epithelium is most conducive to simple diffusion?
A. Pseudostratified columnar B. Stratified squamous C. Simple columnar D. Simple squamous