The bundle of nerve roots that occupy the vertebral canal from L2 to S5 is called the ________.
A. cauda equina
B. lumbosacral enlargement
C. medullary cone
D. spinal cord
E. cervical enlargement
Answer: A
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The pulmonary circuit
A. sends oxygen-poor blood to the tissues. B. brings oxygen-rich blood from the tissues. C. sends oxygen-poor blood to the lungs. D. sends oxygen-poor blood to the heart.
Which darkly pigmented structure reduces light reflection within the eyeballs?
a) Sclera b) Conjunctiva c) Iris d) Choroid e) Retina
The renal artery enters the kidney at this indented area
A) renal medulla B) renal pelvis C) trigone D) hilum
When an unrestrained passenger's head strikes the windshield of a motor vehicle following rapid deceleration:
A) the anterior portion of the brain sustains stretching or tearing injuries, and the posterior portion of the brain sustains compression injuries. B) the head falls back against the headrest or seat and the brain collides with the rear of the skull, resulting in direct injury to the occipital lobe. C) the brain initially strikes the rear of the skull, resulting in direct bruising, and then rebounds and strikes the front part of the skull. D) compression injuries occur to the anterior portion of the brain, and stretching or tearing injuries occur to the posterior portion of the brain.