Cerebrospinal fluid enters the blood circulation at the
A) jugular veins.
B) central canal.
C) arachnoid granulations.
D) tentorium cerebelli.
E) frontal sinus.
C
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The ridges that can be felt along the backbone, on the dorsal aspect of the body, are produced by the
A) vertebral arches. B) dens. C) spinous processes. D) transverse processes. E) styloid processes.
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
The detrusor muscle
A) moves urine along the ureters by peristalsis. B) compresses the urinary bladder and expels urine through the urethra. C) functions as the internal urinary sphincter. D) functions as the external urinary sphincter. E) surrounds the renal pelvis.
The muscle shape that has the capacity to shorten to the greatest degree is
A. pennate. B. straight. C. orbicular. D. unipennate E. multipennate.