The myocardium receives about 5% of circulating blood even though the heart is only 0.5% of total body weight. Which of the statements below is most closely related to this fact?
A. The myocardium of the left ventricle is strikingly thick because it serves to pump blood to all tissues.
B. The left coronary artery supplies both ventricles and the left atrium.
C. The coronary arteries carry more blood during ventricular diastole than they do during ventricular systole.
D. There are several arterial anastomoses in coronary circulation.
E. Cardiocytes have large mitochondria that make up about 25% of cell volume.
E. Cardiocytes have large mitochondria that make up about 25% of cell volume.
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A nerve signal would proceed most commonly in which order?
A) soma > dendrite > axon > synapse B) dendrite > soma > axon > synapse C) dendrite > synapse > soma > axon D) dendrite > soma > synapse > axon
The alveolar process of the maxilla
A) supports the upper teeth. B) supports the lower teeth. C) anchors the tongue. D) is the attachment site for several facial muscles E) None of the answers is correct.
The kiss and run method of vesicle recycling is most important for maintaining synaptic transmission at:
A. an axon with a high firing rate and small presynaptic terminals B. the neuromuscular junction C. a large CNS synapse D. a presynaptic terminal with a low probability of release
Which of the following would take the least time to digest within the gastrointestinal tract?
A) Dipeptide B) Amino acid C) Tripeptide D) Protein