Which of the following arteries gives rise to all others listed?
A) brachial artery B) radial artery C) ulnar artery D) axillary artery
Answer: D
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Answer the following statements true (T) or false (F)
1. Lymph is interstitial fluid that has entered a lymph vessel. 2. The original source of lymph is blood plasma. 3. An important role of the lymphatic system is fluid homeostasis. 4. The tunica media of lymph capillaries contains smooth muscle to help move lymph. 5. Lymph nodes are found between the lymphatic capillaries and the right lymphatic duct or the thoracic duct.
Michael Jordan was arguably the best player in professional basketball history. Scientifically, one would expect him to have highly developed ________ fibers.
A. slow oxidative B. red C. fast twitch D. white E. intermediate
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.
Which of the following statements about the response of arteriolar smooth muscle to changing oxygen partial pressures is TRUE?
A. Systemic arterioles respond to a decrease in PO2 by constricting, but pulmonary arterioles dilate in response to decreased PO2. B. Both systemic and pulmonary arterioles respond to a decrease in PO2 by dilating. C. Both systemic and pulmonary arterioles respond to a decrease in PO2 by constricting. D. Changes in PO2 do not affect arteriolar smooth muscle in the pulmonary system. E. Systemic arterioles respond to a decrease in PO2 by dilating, but pulmonary arterioles constrict in response to decreased PO2.