What part of the mesolimbic system found in the midbrain is involved with behavioral reward?
A. Corpora quadrigemina
B. Substantia nigra
C. Ventral tegmental area
D. Nigrostriatal pathway
Answer: C
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Which of the following is not true of elastic filaments?
A. They run through the core of thin myofilaments. B. They are composed of titin. C. They attach to Z discs. D. They help to stabilize thick myofilaments. E. They prevent overstretching of muscle fibers.
PCO2 tends to be ________ in tissues than in systemic capillaries.
Fill in the blank(s) with the appropriate word(s).
If lymph nodes existed without macrophages, the lymph nodes would lose the ability to
A. remove excess fluid from the body. B. prevent edema in the tissues of the body. C. manufacture lymphocytes. D. clear cellular debris and initiate immune responses.
A person has a 50% blockage of one coronary artery but a good prognosis because of vessel anastomoses. What can this person do to increase the density of these anastomoses?
A. Engage in aerobic exercise B. Eat a high-fat diet C. Control elevated blood glucose D. Maintain a sedentary lifestyle