The rhythmicity center is located in the ________.
A. pons
B. medulla oblongata
C. midbrain
D. cerebral cortex
Answer: B
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Which of the following structures consist of specialized cells that secrete renin when glomerular blood pressure falls?
a) efferent arteriole b) glomerular capsule c) juxtaglomerular complex d) afferent arteriole
Ridges that anchor muscles that stabilize the head are the
A) anterior and posterior nuchal lines. B) anterior and superior nuchal lines. C) inferior and superior nuchal lines. D) medial and lateral nuchal lines. E) cranial and caudal nuchal lines.
Which of the following is not a criterion of anatomical position?
A. Palms forward B. Feet flat on the floor C. Standing erect D. Arms raised over the head
Impulses are conducted rapidly if ________ is present
A) Spinal fluid B) Myelin C) Sodium D) Calcium