Portions of bacteria, viruses, molds, parasites, and cancer cells that cause specific responses from the immune system are called
A. antigens.
B. interferons.
C. antibodies.
D. macrophages.
Answer: A
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Marianne has small, bruise-like spots on her skin and a low platelet count. These blemishes are most likely
A. pinpricks. B. blood blisters. C. hematomas. D. petechiae.
Answer the following statements true (T) or false (F)
1. One of the first signs of labor is the rupture of the “bag of waters.” 2. The birth weight of a baby usually triples by age 4 months. 3. Boys start and finish their early-teen growth spurt earlier than girls. 4. In older adulthood, the costal cartilage begins to soften, leading to a condition called “barrel chest.” 5. The prenatal period is the time before birth.
How are sodium levels and blood pressure related?
A. Increased plasma sodium levels decrease water retention, decrease blood volume, and increase blood pressure. B. Increased plasma sodium levels increase water retention, blood volume, and blood pressure. C. Decreased plasma sodium levels increase water retention, increase blood volume, and decrease blood pressure. D. Decreased plasma sodium levels decrease water retention, increase blood volume, and increase blood pressure.
Which muscle of the tongue elevates the tongue and depresses the soft palate?
A) genioglossus B) palatoglossus C) hyoglossus D) styloglossus