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All of the following statements are accurate about the choroid plexus except a. it is located within the ventricles of the brain.
b. it is composed of ependymal cells and blood capillaries.
c. it receives and filters all sensory information.
d. it produces and circulates cerebrospinal fluid.
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- Which of the following would best describe the relationship between the medial geniculate nucleus of the thalamus and the lateral geniculate nucleus of the thalamus? A) The medial geniculate nucleus is located inferior to the lateral geniculate nucleus. B) The lateral geniculate nucleus is located closer to the midline of the brain compared to the medial geniculate nucleus. C) The medial geniculate nucleus is located closer to the midline of the brain compared to the lateral geniculate nucleus. D) The medial geniculate nucleus is located anterior to the lateral geniculate nucleus.Which of the following brain regions is not correctly matched to itsfunction?a. The medulla oblongata regulates heartbeat, breathing, and bloodpressure.b. The cerebellum coordinates voluntary muscle movements.c. The thalamus secretes melatonin, which regulates daily bodyrhythms.d. The midbrain acts as a refl ex center for visual, auditory, andtactile responses.Coordination and timing of movements and balance are functions of which of the following brain structures? a- basal ganglia b- motor cortex c- midbrain motor centers d- cerebellum
- The integration of the internal activities of the body is controlled by thea. cerebrum.b. cerebellum.c. hypothalamus.d. brain stem.The thoracic spinal cord has the smallest dorsal horn area because: a. the trunk is the most innervated area of the body and therefore there are more projections into the dorsal horn there. b. the trunk is the least innervated area of the body and therefore there are fewer projections into the dorsal horn there. c. most of the descending upper motor neurons have already entered the ventral horn. d. There are many motor neurons to control the small muscles around the spine.In a syndrome called word blindness, a person loses the ability to read (even single letters), although the person can still see and speak. What is a possible neurological explanation? That is, can you imagine a pattern of brain damage that might produce this result?
- Discuss the importance of the hypothalamus to the systems of the body that are affected by the hypothalamus. What would happen if the hypothalamus was removed from the brain? Would the body survive?The feel of your pencil on your fingertip is carried through the thalamus to the cortex. Which part of the cortex does this information reach first? a. hippocampus b. limbic cortex c. parietal lobe d. frontal lobe Which of the following is NOT a catecholamine? a. norepinephrine b. serotonin c. epinephrine d. dopamineWhich of these statements about the basal nuclei is true?a. They are located in the cerebrum.b. They contain the caudate nucleus.c. They are involved in motor control.d. They are part of the extrapyramidal system.e. All of these are true.
- All of the following are functions of the hypothalamus except a. controls endocrine system. b. regulates sleep-wake cycle. c. controls autonomic nervous system. d. initiates voluntary skeletal muscle movement.The subdivision of the brain that does not initiate somatic motor movements, but rather coordinates and fine-tunes those movements, is the a. medulla oblongata. b. cerebrum. c. cerebellum. d. diencephalon.Refer to the direct pathway of the basal ganglia. What part of the frontal cortex is targeted by the direct pathway? What are the effects of the direct pathway on the thalamus and frontal cortex? Explain the circuitry of the direct pathway. Begin with the inputs and end with its effect on the cortex.