Which nuclei or centers are correctly paired with the tracts to which they provide output?
A) vestibular nuclei—vestibulospinal tracts
B) red nuclei—rubrospinal tracts
C) reticular formation—reticulospinal tracts
D) tectum—tectospinal tracts
E) All of the answers are correct.
E) All of the answers are correct.
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What is the role of tropomyosin in skeletal muscles?
A) Tropomyosin serves as a contraction inhibitor by blocking the myosin binding sites on the actin molecules. B) Tropomyosin is the chemical that activates the myosin heads. C) Tropomyosin serves as a contraction inhibitor by blocking the actin binding sites on the myosin molecules. D) Tropomyosin is the receptor for the motor neuron neurotransmitter.
Which reflex is NOT controlled by the brain stem?
A) urination B) swallowing C) salivating D) vomiting E) sneezing
Receptors that combine phasic and tonic coding
A) function in sensations like crude touch. B) convey extremely complicated sensory information to the CNS. C) perceive sensory information. D) are most likely to be peripheral sense receptors. E) do not send sensory information to the CNS.
The lacrimal glands
A. cause a sty when inflamed. B. produce sebum. C. are innervated by parasympathetic fibers from the oculomotor nerve. D. constantly produce a fluid called tears. E. are located in the superomedial corner of the orbit.