________ muscle tissue has no visible striations and is found in the walls of hollow organs
A) Smooth
B) Cardiac
C) Skeletal
D) Dense regular
A
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A whistling murmur heard between the second and first heart sound would be indicative of
a. a stenotic AV valve. b. an insufficient AV valve. c. a stenotic aortic or pulmonary semilunar valve. d. an insufficient aortic or pulmonary semilunar valve. e. no conclusions can be reached based on the information provided.
The flexor (withdrawal) reflex
A. has a monosynaptic component. B. is initiated by stretching muscle spindle fibers. C. is initiated by stimulation of the Golgi tendon organ. D. stimulates contraction of the ipsilateral flexor muscle and inhibits contraction of the ipsilateral extensor muscle. E. stimulates contraction of the contralateral flexor muscle and inhibits contraction of the contralateral extensor muscle.
In clinical practice, glomerular filtration rate is estimated by measuring excretion of the compound ___________________.
a) urea b) ammonia c) creatinine d) phosphate
Which of the following is NOT a function of the lymphatic system?
A. Defending from infection caused by microorganisms and other foreign substances B. Aiding in erythropoiesis of red blood cells C. Absorbing and transporting lipids from the digestive tract D. Maintaining fluid balance by returning excess interstitial fluid to the blood