The figure illustrates bones, fontanels, and sutures on the fetal skull. What does "B" represent?
A. Occipital bone
B. Parietal bone
C. Posterior fontanel
D. Sagittal suture
E. Anterior fontanel
Answer: E
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Which of the following statements related to the "ON pathway" of the visual system is correct?
A. Bipolar cells spontaneously depolarize in the absence of input from photoreceptor cells. B. Glutamate receptors on bipolar cells are excitatory. C. Only cones are associated with bipolar cells of the "ON pathway," rods are not. D. Bipolar cells fire action potentials only when bright light strikes the photoreceptors linked to them. E. Bipolar cells hyperpolarize in the absence of input from photoreceptor cells.
The metacarpals are the bones of the:
a. wrist b. foot c. ankle d. none of the above
Visual and hearing receptors are irreplaceable, but taste and olfactory receptors are continuously renewed
Indicate whether the statement is true or false
What is spermatogenesis?
A) Growing the tail of the sperm B) Making ova C) Producing sperm D) Making oocytes