A 1 molar solution of glucose and 1 molar solution of NaCl have the same number of glucose and NaCl molecules.
Answer the following statement true (T) or false (F)
True
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What kind of helper T cells does HIV (the AIDS virus) selectively invade?
a. TH1 b. TH2 c. TFH d. CD3+ e. CD4+
Which of the following hormones increase(s) in concentration in the plasma during exercise?
A) insulin B) cortisol and catecholamines C) cortisol D) catecholamines E) cortisol, catecholamines, and insulin
Which is TRUE about gastric motility?
A. The basic electrical rhythm of the gastric smooth muscle (three depolarizations per minute) is the same regardless of whether or not food is present. B. Gastric contractions are strongest in the fundus of the stomach. C. The force of contraction is decreased by gastrin and increased by enterogastrones. D. When a wave of excitation reaches the pyloric sphincter, action potentials become inhibitory and the sphincter opens wide to allow chyme to exit. E. The term "slow waves" refer to gastric contractions, while "pacemaker" refers to gastric action potentials.
The relatively small size of the face in the fetal skull is due to all of the following except
A. the lack of tooth eruptions in the maxillae and mandible. B. the undersized mandible. C. the small size of the nasal cavities. D. the small size of the maxillae and their sinuses. E. all of these are reasons why the face is small in a fetal skull.