Place the regions of the nephron in the correct order for the process of urine formation
a: Capsular space of glomerulus
b: Nephron loop
c: Collecting duct
d: Distal convoluted tubule
e: Proximal convoluted tubule
A. a, c, b, e, d
B. e, d, b, a, c
C. b, e, c, d, a
D. b, d, c, e, a
E. a, e, b, d, c
E
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Of the fluid entering the small intestine, ____ percent is reabsorbed
a. 100 b. 95 c. 85 d. 50 e. < 50 percent
In which of the following would the ratio of motor neurons to muscle fibers be the greatest?
A) large muscles of the upper arms B) postural muscles of the back C) muscles that control the eye D) leg muscles E) the calf muscle
Put the following urinary structures in order as urine is produced and eliminated from the body 1 ) liver. 2 ) urinary bladder. 3 ) kidney. 4 ) ureter. 5 ) urethra
A) 1,3,2,4,5 B) 3,1,4,2,5 C) 3,5,2,4 D) 2,1,3,4,5 E) 3,4,2,5
Why can one say that chemical digestion begins in the mouth?
A. The saliva contains electrolytes. B. The saliva contains lysozyme. C. The saliva contains mucus. D. The teeth grind food to expose surface area for enzymatic action. E. The saliva contains amylase and lipase.