A 43-year-old man complains of abdom- inal pain just above his umbilicus. On exam- ination, a tumor is found anterior to the IVC. Which of the following structures would most likely be compressed by this tumor?
(A) Right sympathetic trunk
(B) Left third lumbar artery
(C) Third part of the duodenum
(D) Left renal artery
(E) Cisterna chyli
Ans: (C) Third part of the duodenum
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Involuntary muscle tissue is called skeletal muscle
Indicate whether the statement is true or false.
The largest quantities of keratin are found in the epidermal layer called the stratum
A) corneum. B) lucidum. C) basale. D) granulosum. E) spinosum.
In addition to transporting oxygen hemoglobin transports
a. some carbon dioxide. b. nitric oxide. c. buffered hydrogen ions. d. both (a) and (b) above. e. all these answers.
The name of the receptor region containing hair cells involved in detecting static equilibrium is ________
A) macula B) ampulla C) ampullary cupula D) crista ampullaris