Compared to arteries, veins
A) have internal and external elastic membranes.
B) have more smooth muscle in their tunica media.
C) have a pleated endothelium.
D) have thinner walls.
E) are usually round when cut.
Answer: D
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Answer the following statements true (T) or false (F)
1. In general, the functions of the nervous system result in rapid activity that lasts for a long time. 2. The endocrine system is composed of special glands that release enzymes into the blood. 3. The glands of the endocrine system are sometimes called ductless glands. 4. The endocrine system provides slower but longer-lasting control when compared to the nervous system. 5. The pineal gland is an endocrine gland found in the neck.
The hip joint has less freedom of movement than the shoulder joint because
A) the hip joint capsule is less elastic than the shoulder. B) the joint capsule of the hip is surrounded by muscles and the shoulder is not. C) the articulating parts of the hip are closer together than those of the shoulder. D) the hip has more supportive ligaments than the shoulder.
What is the order in which fetal blood would pass through the following structures after leaving the heart?
1. pulmonary trunk 2. foramen ovale 3. umbilical arteries 4. umbilical vein 5. ductus venosus 6. right atrium A) 1, 4, 2, 3, 6, 5 B) 4, 3, 1, 2, 6, 5 C) 1, 3, 4, 5, 6, 2 D) 6, 3, 1, 4, 2, 5 E) 5, 4, 3, 2, 1, 6
The enzyme that catalyzes the first step reaction in HCl production by gastric parietal cells is called ________
A) dipeptidase B) protease C) carbonic anhydrase D) ATPase E) carbonic acid