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 control of infections for treatment for pem, Define Control of infec...
Define Control of infections for treatment for pem? Appropriate antibiotics should be started immediately since infections are the immediate cause of death in many children. Ch
Internal factor - factor controlling metamorphosis in insect, Internal Fact...
Internal Factor - Factors Controlling Metamorphosis in Insects Likewise to the amphibian metamorphosis, moulting and metamorphosis in insects has been found to be initiated in
Basics of echocardiography, Echocardiography is one of the -most frequent...
Echocardiography is one of the -most frequently used imaging modalities for diagnosing cardiovascular diseases. It i's versatile and is applicable in the entire spectrum of
Express the term in brief protonephridia., Express the term in brief - Prot...
Express the term in brief - Protonephridia. An osmoregulatory-excretory structure found in some invertebrates. Also known as a flamecell, this tubule is closed at its distal en
How can you categorize flowering plants, Q. What are the two major groups i...
Q. What are the two major groups into which flowering plants are divided? Angiosperm plants are separated into monocotyledonous (monocots) and dicotyledonous (dicots).
What are the fruiting bodies present in some fungi, What are the fruiting b...
What are the fruiting bodies present in some fungi? Fruiting bodies are structures made of hyphae that project radially from the superior portion of the peduncle of some fungi.
Changes in the conformation - qualitative changes, Changes in the conformat...
Changes in the conformation of molecules - Qualitative Changes You may recall that linear chain of amino acids of a protein folds into a characteristic structure. Acidic resid
Explain the kingdom fungi organisms, Explain the Kingdom Fungi organisms? ...
Explain the Kingdom Fungi organisms? Kingdom Fungi consists of mostly eukaryotic, multicellular, non-photosynthetic organisms that derive their nutrients by absorption. Fungi
Infant botulism, In infant botulism, viable botulinal spores are ingested a...
In infant botulism, viable botulinal spores are ingested and upon germination in the intestinal tract, toxin is synthesized. It is confined to infants under a year of age. High num
Determine the food sources of pyridoxine, Determine the Food Sources of Pyr...
Determine the Food Sources of Pyridoxine? Raw foods contain more of this vitamin than cooked foods. The food sources include: 1. Rich sources: Rice polishing s, wheat bran,
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
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.