Customer Service Chat
Get quote & make Payment
Central and peripheral nervous systems, Biology
The brain is only a part of a larger nervous system that extends to each part of the body. The nervous system can be divided into central nervous system (CNS), which consists of the brain and the spinal cord, and peripheral nervous system.
Superior to the pons, a structure named tectum contains inferior and superior colliculi that are highly important structures for early processing (and also in the case of superior colliculus fusion of ) auditory and visual information, respectively. Another structure that is located superior to the pons is the tegmentum. The ventral tegmental area has been intensively studied as the source of specific neurochemical transmitter substance dopamine that has been associated with reward circuitry of the brain that is important for motivation and is also implicated in development of drug addictions.
Cerebellum is located posterior to the pons. The cerebellum is a structure that has been implicated in coordination/timing of well-learned motor sequences, such as a golf swing executed by an experienced golfer. Damage to the cerebellum results in deficits in fine motor coordination, balance, and motor learning. The cerebellum gets inputs from sensory and motor cortical areas of the brain and sends output through the so-called deep nuclei to thalamus and cortical (especially premotor and motor) areas.
Recently, there has been increasing recognition that the cerebellum, in addition to its role in motor coordination, is important for cognitive functions such as selective attention and emotions (Schmahmann, 2010). The posterior lobe of the hippocampus is especially implicated in other than motor functions. Thalamus, on the other hand, is a very important structure through which most of the sensory inputs travel to cortex (as well as being a major target of cortical descending inputs) and hypothalamus regulates hormonal secretion via the pituitary.
To summarize, the evolutionarily older structures that underlie the cerebral hemispheres are mainly responsible for regulating vital body functions, arousal, and relaying ascending inputs from the senses (and also descending motor commands). If humans only had these structures, we would however, lack what makes us human; the ability to reason, remember, plan ahead, feel for others, be social, possess sense of humor etc. All these are made possible by the cerebrum that is the part of the brain that has expanded the most during evolution.
Posted Date: 7/7/2012 6:49:14 AM | Location : United States
Ask an Expert
Central and peripheral nervous systems, Assignment Help, Ask Question on Central and peripheral nervous systems, Get Answer, Expert's Help, Central and peripheral nervous systems Discussions
Write discussion on Central and peripheral nervous systems
Your posts are moderated
Write your message here..
Define gender discrimination - public nutrition, Define Gender Discriminati...
Define Gender Discrimination - Public Nutrition? Of the detrimental factors, that affect food security, gender discrimination is the most pervasive and vicious. The fact that h
Why ascending method of paper chromatography is preferred, Why Ascending Me...
Why Ascending Method of Paper Chromatography is Preferred? The ascending method is preferred because of the simplicity of the set up. In actual method the substance to be separ
Evaluation of disabilities, Problem: Evaluation of disabilities due to ...
Problem: Evaluation of disabilities due to occupational diseases (a) Describe the following terms: "impairment", "disability "and "handicap" (b) Show how the evaluation o
Prevention and control of shigella food borne infection, Prevention and Con...
Prevention and Control of Shigella food borne infection The control of Shigella food borne infection is similar to that of salmonellae; avoiding contamination of foods by ani
Rejection reaction, Rejection Reaction For rejection reaction the phys...
Rejection Reaction For rejection reaction the physiological and biochemical processes are set in the pistil by the recognition reaction specific to the type of pollen that lan
Examine why humans not evolve with one central repository, Discuss why huma...
Discuss why humans not evolve with one central repository of DNA rather than having it replicated throughout the body?
Lens regeneration in amphibians, Lens Regeneration in Amphibians It i...
Lens Regeneration in Amphibians It is an amazing fact that between all vertebrates only certain amphibians have the unique ability to regenerate lens, iris and retina in adul
Somatoform disorders, SOMATOFORM DISORDERS: The term 'Neurosis' was f...
SOMATOFORM DISORDERS: The term 'Neurosis' was first introduced in 1769 by William Cullen (1710- 1790). Till later part of nineteenth century, anxiety disorders were conspicu
What are the three main types of passive transport, What are the three main...
What are the three main types of passive transport? The three main kinds of passive transport are a) simple diffusion, b) osmosis and c) Facilitated diffusion. C
What is primary growth in shoot, What is Primary Growth in Shoot? The ...
What is Primary Growth in Shoot? The growth in height of a plant stem results from the division of cells at the apex, or tip of the stem, called the shoot tip. Here, a group o
Accounting Assignment Help
Economics Assignment Help
Finance Assignment Help
Statistics Assignment Help
Physics Assignment Help
Chemistry Assignment Help
Math Assignment Help
Biology Assignment Help
English Assignment Help
Management Assignment Help
Engineering Assignment Help
Programming Assignment Help
Computer Science Assignment Help
IT Courses and Help
Why Us ?
~24x7 hrs Support
~Quality of Work
~Time on Delivery
~Privacy of Work
Human Resource Management
Literature Review Writing Help
Follow Us |
T & C
Copyright by ExpertsMind IT Educational Pvt. Ltd.