During systole, no blood enters the arteries, while blood continues to leave, driven by elastic recoil
a. True
b. False
Indicate whether the statement is true or false
False
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Myasthenia gravis is a collection of muscle disorders that cause muscle fatigue and weakness. What is the major mechanism?
A. overproduction of acetylcholinesterase B. autoimmune destruction of nicotinic acetylcholine receptors C. demyelination of axons in motor pathways D. autoimmune destruction of L-type Ca2+ channels. E. a tumor that overproduces acetylcholine
Which gland is located in the sella turcica?
A. thymus B. adrenal C. pineal D. hypothalamus E. pituitary (hypophysis)
What is the largest lymphatic organ in a child?
A) spleen B) adenoids C) thymus D) appendix
The ________ vein runs between the cephalic and basilica veins on the anterior aspect of the elbow
A) median cubital B) median antebrachial C) ulnar D) radial