The electrical signals that are propagated along axons, regulating and coordinating body activities, are known as _____.
A. graded potentials
B. neurotransmitters
C. action potentials
Answer: C. action potentials
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Compared to the hand, the foot
A) has more phalanges. B) has fewer metatarsals than the hand has metacarpals. C) has more tarsal bones than the hand has carpal bones. D) contains arches that help distribute body weight. E) has the same number of tarsal bones as the hand has carpal bones.
Which structures form the filtration membrane in the nephron?
A) afferent arteriole and the efferent arteriole B) afferent arteriole and the glomerular capsule C) efferent arteriole and the glomerular capsule D) glomerulus and the glomerular capsule
The bulk of our lymphoid tissue is located in the ____
a. pancreas b. spleen c. tonsils d. lymph nodes
During pregnancy, it is the low level of androgens and not the presence of estrogens that results in a female child.
Answer the following statement true (T) or false (F)