In correct order, from external to internal, the layers of the testis include:
(1) dartos muscle
(2) cremaster muscle
(3) tunica vaginalis
(4) scrotal cavity
(5) tunica albuginea
(6) septa
A) 2, 4, 6, 3, 5, 1
B) 6, 5, 4, 3, 2, 1
C) 5, 3, 4, 2
D) 1, 2, 3, 4, 5, 6
E) None of the answers are correct.
D) 1, 2, 3, 4, 5, 6
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Accelerated closure of the epiphyseal plates could be caused by
A) high levels of vitamin D. B) too much calcium in the diet. C) elevated levels of estrogen. D) too little thyroxine. E) an excess of growth hormone.
Blood returning from the vena cava:
a. enters the right atrium. b. enters the left atrium. c. is poorly oxygenated. d. both (a) and (c) above. e. both (b) and (c) above.
The T wave of the ECG represents atrial repolarization.
Answer the following statement true (T) or false (F)
Assume that the left ventricle of a child's heart has an EDV=90mL, and ESV=60mL, and a cardiac output of 2,400 mL/min. His SV is ________ mL/beat and his HR is ________ bpm
A) 16; 150 B) 30; 80 C) 40; 60 D) 80; 30 E) 150; 16