A 9-year-old girl has crashed into her neighbor's brick fence while riding her bike and is brought to the emergency department Chapter 5 Abdomen 235 236 BRS Gross Anatomy with a great deal of abdominal pain. Her radiogram and angiogram show laceration of the superior mesenteric artery immediately distal to the origin of the middle colic artery. If collateral circulation is discounted, which of the following organs may become ischemic?
(A) Descending colon
(B) Duodenum
(C) Pancreas
(D) Ascending colon
(E) Transverse colon
Ans: (D) Ascending colon
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The neurons that stimulate muscle contraction are called ________ neurons.
A. sensory B. motor C. contractile D. association E. inhibitory
Action potentials are initiated at the motor end-plate region of skeletal muscle fibers
Indicate whether the statement is true or false
The Haldane effect means that
A. as hemoglobin releases CO2, the ability to pick up O2 increases. B. as hemoglobin releases bicarbonate ions, the ability to pick up chloride ions increases. C. as hemoglobin releases O2, the ability to pick up CO2 increases. D. as hemoglobin releases O2, the ability to pick up CO2 decreases.
The neonatal period of development extends from birth to the end of the first year
Indicate whether the statement is true or false