The cells have highly branched dendrites make more connections than any other type of neuron. They are found in great abundance in the cerebellum. multipolar
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- Watch this video (http://openstaxcollege.org/l/basalnuclei1) to learn about the basal nuclei (also known as the basal ganglia), which have two pathways that process information within the cerebrum. As shown in this video, the direct pathway is the shorter pathway through the system that results in increased activity in the cerebral cortex and increased motor activity. The direct pathway is described as resulting in disinhibition of the thalamus. What does disinhibition mean? What are the two neurons doing individually to cause this?Watch this video (http://openstaxcollege.org/l/motorpathway) to learn more about the descending motor pathway for the somatic nervous system. The autonomic connections are mentioned, which are covered in another chapter. From this brief video, only some of the descending motor pathway of the somatic nervous system is described. Which division of the pathway is described and which division is left out?A presynaptic neuron in the cerebrum transmits information to hundreds of other neurons. This process is an example of (a) convergence (b) divergence (c) temporal summation (d) spatial summation (e) a graded potential
- Myelinated axons make up the brains _______. a. white matter c. gray matter b. ventricles d. meningesWatch the video (http://openstaxcollege.org/l/2brains) titled The Man With Two Brains to see the neuroscientist Michael Gazzaniga introduce a patient he has worked with for years who has had his corpus callosum cut, separating his two cerebral hemispheres. A few tests are run to demonstrate how this manifests in tests of cerebral function. Unlike normal people, this patient can perform two independent tasks at the same time because the lines of communication between the right and left sides of his brain have been removed. Whereas a person with an intact corpus callosum cannot overcome the dominance of one hemisphere over the other, this patient can. If the left cerebral hemisphere is dominant in the majority of people, why would right-handedness be most common?Which white matter structure carries information from the cerebral cortex to the cerebellum? cerebral peduncle superior cerebellar peduncle middle cerebellar peduncle inferior cerebellar peduncle
- A kicker on the local football team has experienced head trauma. When attempting to kick the ball, his movements were jerkyand exaggerated. The team’s athletic trainer was convinced that the kicker had damage to his cerebellum and insisted that hebe transported to the hospital. Does the athletic trainer’s conclusion make sense? Why or why not?Visit this site (http://openstaxcollege.org/l/neurolab)to see a virtual neurophysiology lab, and to observeelectrophysiological processes in the nervous system,where scientists directly measure the electrical signalsproduced by neurons. Often, the action potentials occur sorapidly that watching a screen to see them occur is nothelpful. A speaker is powered by the signals recorded froma neuron and it “pops” each time the neuron fires an actionpotential. These action potentials are firing so fast that itsounds like static on the radio. Electrophysiologists canrecognize the patterns within that static to understand whatis happening. Why is the leech model used for measuringthe electrical activity of neurons instead of using humans?In humans, functions like language, decision making, and conscious thought are governed by the:a. thalamusb. cerebral cortexc. cerebellumd. cerebrum
- Which primary vesicle of the embryonic nervoussystem does not differentiate into more vesicles at thesecondary stage?a. prosencephalonb. mesencephalonc. diencephalond. rhombencephalonMake a concept map about the"Nervous system" and give the parts of the structures, locations, and functions.Insert the all in all function of theNervous system and how it functions in aspecific body part. The picture is onlyan illustration, it doesnt decipt theactual output. - First, the system of the body will be divided by connecting lines into its structures and functions.Then each of these two major topics will be further subdivided into smaller components.Connecting lines or arrows will be used to join related divisions for the purpose of showing relationships.Occasionally, a brief description or word may be used along with the connecting lines to reinforce the explanation of the relationship.During surgery to remove a tumor from the occipital lobe ofthe left cerebrum, a surgeon must cut into the brain to reachthe tumor. List in order (starting with the covering skin) alllayers that must be “cut through” to reach the tumor.
