During a physical examination of a 35-year-old man with a spinal cord injury, the neurologist lightly strokes the right upper medial side of the thigh to test the integrity of the L1-2 spinal cord segments. He notes the cremasteric reflex is absent. Which of the following nerves carries the efferent limb of this reflex arc?
(A) Iliohypogastric
(B) Genital branch of the genitofemoral
(C) Femoral branch of the genitofemoral
(D) Femoral
(E) Ilioinguinal
Ans: (B) Genital branch of the genitofemoral
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A) oral doses of iron. B) injections of iron. C) oral doses of vitamin B12. D) injections of vitamin B12. E) blood transfusion.
Which is not one of the cardinal signs of inflammation?
A. Heat B. Redness C. Loss of function D. Numbness E. Swelling
What are caveolae?
A. Enzymes that removes phosphate from myosin B. Structures that allow for relatively constant tension maintained for a period of time C. Shallow invaginations of plasma membrane D. Ion channels that allow for rapidly developing action potentials E. Parts of the intracellular cytoskeleton
Creatinine is a metabolic product produced in
A. nerves. B. fat cells. C. the liver. D. muscles.