A wedding ring is traditionally worn around which bone?
A) the second bone at the carpometacarpal joint
B) the distal element of the pollex
C) the proximal phalanx of digit four of the manus
D) the third metatarsal
E) None of the answers are correct.
C) the proximal phalanx of digit four of the manus
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Which of the following properties does not pertain to the arterioles?
a. their radii cannot be changed. b. their walls contain a thick layer of smooth muscle. c. they are responsible for the distribution of blood flow to the various organs. d. they are the major vessels that contribute to total peripheral resistance. e. they are richly innervated by sympathetic nerve fibers.
Answer the following statements true (T) or false (F)
1. In an asthma attack, medication is inhaled to relax the constricted muscles of the bronchioles. 2. The smallest and last part of the air distribution system of the respiratory tract is the alveolar ducts. 3. Surfactant is needed in the lung to increase the surface tension in the alveoli. 4. Premature infants may not make sufficient surfactant in the lung. This may increase the probability that the alveoli in the lungs will collapse. 5.
A person with polio has lost the use of his leg muscles. In which area of his spinal cord would you expect the virus-infected motor neurons to be?
A) anterior gray horns B) posterior gray horns C) lateral gray horns D) posterior white column E) gray commissures