The pulse pressure is the
a. difference between the systolic and diastolic pressures
b. average pressure throughout the cardiac cycle
c. maximum pressure exerted in the arteries
d. minimum pressure exerted in the arteries
e. change in pressure that can be felt in an artery due to shutting of the aortic valve
A
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Which of the labeled steps in the diagram represent formation of the primitive heart tube?
a) A b) B c) C d) D e) E
The most delicate of the meninges consists of elastic and collagen fibers and is known as the
A. pia mater. B. dura mater. C. falx cerebri. D. arachnoid mater.
What are Peyer patches, and where are they located?
A. Mucous glands of the duodenal submucosa B. Fatty, clublike appendages on the serosa of the colon C. Lymphatic follicles of the ileum D. Peptic ulcers that may occur in the stomach or duodenum E. Lymphatic tissues of the oropharynx
Which of the following muscles helps to open the mouth (depress the mandible)?
A. Depressor anguli oris B. Sternohyoid C. Digastric D. Zygomaticus major E. Mentalis