The movement of the stapes at the oval window establishes pressure waves in the
A) endolymph of the scala vestibuli.
B) ampullae.
C) perilymph of the scala tympani.
D) endolymph of the cochlear duct.
E) perilymph of the scala vestibuli.
E) perilymph of the scala vestibuli.
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What is the function of the basal nuclei in normal motor control?
A. They provide a perceptual awareness related to specific sensory inputs from the eyes, nose, and mouth. B. They provide a sense of the cause-and-effect relationships between muscle actions and the consequences of taking these actions before executing them. C. They participate in a looping neuronal circuit through which motor impulses are sent to facilitate or suppress movements. D. They provide a general perceptual awareness associated with somatosensory inputs from the skin, muscles, and joints. E. They form an initial intention to move, such as when you decide to pick up an object.
Compact bone is organized into bony columns called ________
A) osteons B) lamellae C) canaliculi D) lacunae
Match the nerve to the correct function.Ulnar nerve
A. Innervates all but one of the flexor muscles of the forearm and most of the hand muscles near the thumb B. Innervates the deltoid and teres minor muscles C. Innervates the triceps brachii D. Innervates two forearm muscles plus most of the intrinsic hand muscles E. Provides motor innervation to the biceps brachii
Cell death first occurs
A. at puberty. B. in the fetus. C. at age 60. D. at age 50.