In clinical practice, glomerular filtration rate is estimated by measuring excretion of the compound ___________________.
a) urea
b) ammonia
c) creatinine
d) phosphate
c) creatinine
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The heart is surrounded by a tough membrane, the ________, which contains the ________.
A. serous pericardium; myocardium B. pericardial cavity; epicardium C. endocardium; fibrous pericardium D. fibrous pericardium; serous pericardium
One key advantage associated with bilateral symmetry in animals is
A) An increase in speed. B) The presence of a coelom. C) The evolution of limbs. D) The evolution of cephalization.
The main control of peripheral resistance by the vasomotor centers occurs in the
A) artery. B) arteriole. C) capillary. D) venule. E) vein.
Which layer of the arterial wall is responsible for vasoconstriction?
a) tunica interna b) tunica media c) tunica externa d) tunica albuginea e) tunica fascia