What is a possible cause of stenosis of the bicuspid valve?
A. Endocarditis
B. Pericarditis
C. Cardiomyopathy
D. Rheumatic fever
E. Angina pectoris
D. Rheumatic fever
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Smooth muscles are primarily used to
A) move bones. B) help movements occur smoothly. C) generate heat. D) pump blood through the circulation. E) push substances through tubes.
Guinea pigs have large __________ sebaceous glands, they use for scent marking, especially unneutered boars
Fill in the blank(s) with correct word
Atelectasis occurs when:
A) the alveoli are overinflated and rupture. B) a deficiency of surfactant causes alveolar collapse. C) deoxygenated blood diffuses across the alveoli. D) surface tension on the alveolar walls is decreased.
Blood vessels enter the eye and nerve processes exit the eye at the ________.
A. pupil B. sensory retina C. optic disc D. macula lutea E. fovea centralis