Where does the lower respiratory tract begin?
A. The trachea
B. The main (primary) bronchi
C. The bronchioles
D. The choanae
E. The glottis
Answer: E
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A patient swears they make sure they eat plenty of foods rich in vitamin B12, but they still suffer from the anemia, jaundice, and weakness associated with vitamin B12 deficiency. Their doctor thinks their body might not be producing ________, which is necessary for vitamin B12 absorption.
Fill in the blank(s) with the appropriate word(s).
Given below are the layers of the respiratory membrane. In what order would oxygen pass through this membrane under normal circumstances?
1) layer of fluid lining the alveolus 2) alveolar epithelium 3) alveolar epithelium basement membrane 4) interstitial space 5) capillary endothelium's basement membrane 6) capillary endothelium A. 6,5,4,3,2,1 B. 4,1,2,3,5,6 C. 1,3,2,5,6,4 D. 1,2,3,4,5,6 E. 2,1,4,3,6,5
The left lymphatic duct drains lymph from the ______.
a. left arm, left chest, and left side of head. b. upper part of the body. c. right arm, right chest, and right side of head. d. abdomen. e. right side of the body.
Multiple wave summation
A. is a condition in which the muscle fiber only partially relaxes between contractions. B. is a constant tension produced by muscles for long periods of time. C. is a time during which the tissue cannot respond again. D. is a condition in which stimuli occur so rapidly that there are no intervening relaxations. E. results in complete and incomplete tetanus.