A pedestrian narrowly avoids being hit by an oncoming car. He notices that it takes a little while for his heart rate and respiratory rate to return to normal. This is likely because
A) the parasympathetic nervous system has become activated.
B) sympathetic activation of the adrenal medulla has released epinephrine and norepinephrine into the bloodstream.
C) the splanchnic nerves have become activated.
D) somatic motor neurons have increased the heart and respiratory rate.
E) the corticospinal pathway has become activated.
B
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In the CNS all axons are myelinated, but in the PNS some are myelinated and some are unmyelinated
Indicate whether this statement is true or false.
Imagine you are a forensic osteologist teaching a course on differentiating the male skeleton from the female skeleton. Justify the reasoning that the pelvis is the best area to examine.
What will be an ideal response?
Following a spinal injury, a patient presents with abdominal breathing and use of the accessory muscles in the neck. This suggests injury at or above:
A) C1-C2. B) C3-C4. C) T1-T4. D) T2-T5.
A fossa is a(n) ________.
A. a small depression B. rounded or knucklelike process for forming joints C. small, rounded process for attachment of ligaments or tendons D. opening or passageway through a bone