Which of the following vessels is most likely to supply the anterior left ventricular myocardium?
a. Marginal artery
b. Posterior interventricular artery
c. Circumflex artery
d. Left anterior descending artery
e. Right coronary artery
Answer: d. Left anterior descending artery
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Which of the following consists of a network of intracellular membranes with attached ribosomes?
A) rough endoplasmic reticulum B) smooth endoplasmic reticulum C) mitochondria D) nucleoli E) Golgi apparatus
A flexor is a skeletal muscle whose shortening moves attached bones
A) away from one another. B) laterally. C) medially D) towards one another.
Acetylcholinesterase, monoamine oxidase (MAO), and catechol-O-methyltransferase are
A) neurotransmitters. B) enzymes that break down neurotransmitters. C) enzymes that act as neuromodulators. D) enzymes that could produce an EPSP. E) substances that could produce an IPSP.
ANP is a hormone that causes
A. constriction of the afferent arterioles and release of renin. B. constriction of the afferent arterioles and inhibition of renin release. C. dilation of the afferent arterioles and release of renin. D. dilation of the afferent arterioles and inhibition of renin release.