Which of the following genotypes will result in a male?
A. XX
B. XXX
C. YY
D. XY
E. XO
Answer: D
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In an ECG pattern, the T wave is caused by
A. depolarization of ventricular muscle fibers. B. depolarization of atrial muscle fibers. C. repolarization of atrial muscle fibers. D. repolarization of ventricular muscle fibers.
Which vessels are most important for controlling resistance to blood flow?
A. Elastic arteries B. Capillaries C. Arterioles D. Venules
Which protein does NOT belong in a thin filament?
A) myosin B) tropomyosin C) troponin D) actin
Which of the following is true regarding the levator scapulae?
A. It flexes the neck if the scapula is fixed. B. It elevates the scapula if the scapula is fixed. C. It protracts the scapula if the humerus is fixed. D. It rotates the scapula and depresses the apex of the shoulder. E. It is innervated by the phrenic nerve.