__________ are fragments of megakaryocytes and are involved in blood clotting.
Fill in the blank(s) with the appropriate word(s).
Platelets
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Which cells are nonfunctional in normal daylight?
A. Cones B. Rods C. Amacrine cells D. Bipolar cells E. Mitral cells
Descending instructions along the ________ of the spinal cord adjust peripheral muscle tone to complement the reflexive movements of the head or neck.
Fill in the blank(s) with the appropriate word(s).
To do a spinal tap to sample the cerebrospinal fluid, a needle is inserted into which of the following?
A) Central canal B) Subarachnoid space C) Epidural space D) Subdural space
You suspect that your patient's Vitamin B deficiency is related to poor function in his large intestine. Which of the following might explain the source of the problem?
A) Inadequate water reabsorption B) Excessive absorption of glycerol C) Lack of appropriate bacteria D) Inefficient elimination of wastes