Which branch(es) of the right coronary artery extends toward the apex along the anterior surface of the right ventricle and continues across the posterior surface of the heart?
A) circumflex branch
B) posterior interventricular branch
C) atrial branches
D) right marginal branch
E) anterior interventricular branch
Ans: D) right marginal branch
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Which muscle forms the traditional "six-pack" of a well-toned abdominal wall?
A. Internal oblique B. External oblique C. Longissimus D. Rectus abdominis E. Transversus abdominis
After prolonged strenuous exercise has stopped, heavy breathing will often continue for several minutes in order to provide the oxygen needed to
a) convert the lactic acid produced during exercise back into glycogen. b) resynthesize creatine phosphate. c) replace oxygen displaced from muscle myoglobin. d) All of these choices e) None of these choices
Which blood vessel tunic is innervated by nerves from the sympathetic nervous system?
A) tunica externa B) tunica intima C) tunica adventitia D) tunica media
Areas of the spleen that contain large aggregations of lymphocytes are known as
A) Peyer's patches. B) adenoids. C) white pulp. D) red pulp. E) lymph nodes.