The mediastinum is part of the
A. thoracic and ventral cavities.
B. abdominopelvic and ventral cavities.
C. pleural and ventral cavities.
D. thoracic and dorsal cavities.
Answer: A
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Which of the following is incorrect pertaining to IV discs?
A) They are traversed by blood vessels that are branches of the anterior and posterior spinal arteries. B) They differ in thickness in different parts of the vertebral column. C) Cervical and lumbar discs are thicker anteriorly than posteriorly. D) The nucleus pulposus is primarily composed of water. E) The annulus fibrosus is composed of concentric lamellae of fibrocartilage.
In ____________________ transport, sodium and the accompanying molecule are moved in opposite directions across the membrane
Fill in the blank(s) with correct word
The underlying cause of Tay-Sachs disease is __________.
A)the muscle cells store excess lipids B)the lack of sufficient lysosomes in the nervous system C)the lysosomes lack an enzyme needed to break down a specific glycolipid in nerve cell membranes D)the ingestion of excess lipids in the diet
What are three mechanisms used to regulate the timing and amount of pituitary secretion?
a) feedback from target organs b) parasympathetic nervous system control c) hypothalamus control d) sympathetic nervous system control e) control by brain centers other than hypothalamus