A muscle that assists the muscle that is primarily responsible for a given action is a(n)
A) agonist.
B) antagonist.
C) synergist.
D) originator.
E) levator.
C
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What inner ear structure detects acceleration and deceleration movements of the head?
A. Auditory ossicles B. Maculae C. Spiral organ D. Scala vestibule E. Cupulas
What is the difference between the anatomy of the cranial nerves and that of the spinal nerves?
A) In cranial nerves, hollow cavities are empty; in spinal nerves, hollow cavities contain cerebrospinal fluid. B) In cranial nerves, damage is always fatal; in spinal nerves, damage can be healed. C) In cranial nerves, the right and left sides act independently; in spinal nerves, movement is connected. D) In cranial nerves, the white matter is surrounded by the gray matter; in spinal nerves, it is the other way around.
Which mechanism is not important in self-tolerance?
a. clonal deletion b. activation by helper T cells c. clonal anergy d. receptor editing e. active suppression by regulatory T cells
Relative to the blood in most small arterioles, the blood in the pulmonary trunk is _______ oxygenated. A
A. less B. more