The ANS can control which of the following without input from the brain?
A. Digestive secretion
B. Blood pressure
C. Urination
D. Heart rate
E. Sweating
Answer: C
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Describe the role of the corticobulbar tracts
A) Corticobulbar tracts are ascending tracts that carry information or commands from the sensory nuclei in the brainstem to the cerebral cortex. B) Corticobulbar tracts are descending tracts that carry information or commands from the cerebral cortex to motor nuclei in the brainstem. C) Corticobulbar tracts are ascending tracts that carry sensory information from the anterior gray horns of the spinal cord to the cerebral cortex. D) Corticobulbar tracts are descending tracts that carry motor commands from the cerebral cortex to the anterior gray horns of the spinal cord. E) Corticobulbar tracts are ascending tracts that receive sensory information from the internal ear about the position and movement of the head.
The hypoxic drive, a backup system to control breathing, is stimulated when:
A. arterial PaO2 levels decrease. B. arterial PaCO2 levels increase. C. arterial PaO2 levels increase. D. arterial PaCO2 levels decrease.
An IPSP is inhibitory because it
A. changes the threshold of the neuron. B. hyperpolarizes the postsynaptic membrane. C. prevents Ca2+ entry into the presynaptic terminal. D. reduces the amount of neurotransmitter released by the presynaptic terminal. E. depolarizes the postsynaptic membrane.
The ability to nod "yes" is due to the articulation of which two bones?
A) atlas and axis B) axis and C3 C) atlas and C3 D) axis and occipital E) atlas and occipital