What is the name of the gaps found between segments of myelin along an axon?
a. Internodes
b. Synapses
c. Initial segments
d. Nodes of Ranvier
Ans: d. Nodes of Ranvier
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When shear stress increases, endothelial cells release nitric oxide, which diffuses to the underlying smooth muscle and promotes vasodilation
a. True b. False Indicate whether the statement is true or false
Which of the following laryngeal cartilages are paired?(1) Epiglottis(2) Thyroid cartilage(3) Corniculate cartilage(4) Arytenoid cartilage(5) Cuneiform cartilage(6) Cricoid cartilage
A. 2, 3, 4 B. 1, 2, 6 C. 3, 4, 5 D. 3, 5, 6 E. 2, 4, 5
Which brainstem centers generate the respiratory pace?
A) respiratory rhythmicity centers in the pons B) apneustic centers and pneumotaxic centers C) higher centers in the hypothalamus, limbic system, and cerebral cortex D) respiratory rhythmicity centers in the medulla oblongata E) pneumotaxic centers and ventral respiratory group
Groups of muscles are separated by which of the following?
A. Epimysium B. Fascicles C. Perimysium D. Fasciae E. Endomysium