Enlargements of the spinal cord occur
A) near the posterior median sulcus.
B) adjacent to the anterior median fissure.
C) in those spinal segments that control the limbs.
D) in the thoracic region.
E) in the sacral region.
Answer: C
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The connecting tissue of the two hemispheres of the cerebrum is the ____________________.
Fill in the blank(s) with the appropriate word(s).
Which of the following statements indicates the way in which the body's natural defenses protect the skin from the effects of UV damage?
A) The skin is protected by the synthesis of three pigments that contribute to the skin's color. B) Carotene, which accumulates in the stratum corneum and hypodermal adipose tissue, is synthesized in large amounts in the presence of sunlight. C) The skin is protected by increasing the number of epidermal dendritic cells, which help to activate the immune system. A) The skin is protected by the synthesis of three pigments that contribute to the skin's color. B) Carotene, which accumulates in the stratum corneum and hypodermal adipose tissue, is synthesized in large amounts in the presence of sunlight. C) The skin is protected by increasing the number of epidermal dendritic cells, which help to activate the immune system. D) Prolonged exposure to the sun induces melanin dispersion, which in turn acts as a natural sunscreen.
Which of the following is not one of the body's three lines of defense against pathogens?
A. Physical barriers such as skin and mucous membranes B. Nonspecific actions of cells, proteins, and inflammation C. Specific immunity by B and T cells D. Drainage of excess interstitial fluid into lymphatic capillaries
Which of the following is part of the axial skeleton?
A. the skull B. the vertebrae C. the sternum D. all of the above