Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Neural Circuits
The simple all are none activities of a single neuron can hardly provide the adaptability needed for the constant changes faced by the organism in its internal and external environments. Information about the external environment is integrated with signals arising within the organism and transmitted to effectors to elicit a coordinated response. Thus each neuron forms a unit in a communication circuit. A survey of the features of the nervous system in the animal groups at various points on the phylogenetic tree shows that a long evolutionary process has produced the outstanding complex structure of the human brain.
Figure: Nerve Net in Jelly Fish
Protozoans are single celled organisms and clearly cannot have a nervous system. An examination of the electrical properties of the protozoan cell membrane would, however, show many similarities to those of nerve cells including electrical potential changes and currents associated with activity. Coelenterates are of great interest neurologically since they are the first animals to possess a true nervous system. The coelenterate nervous system consists of a diffuse network of neurons that are distributed throughout the body wall. Such a simple and primitive nervous system is termed a nerve net in which neurons are dispersed mostly at random. Though primitive, this arrangement serves the need of a radially symmetrical animal whose food and enemies may approach from all directions. The animal's reaction depends on the strength of the stimulus. Only a part of the body reacts to a weak stimulus and a strong stimulus causes the entire animal to respond. From such diffuse primitively organised system of nerve cells, evolution has produced a complex organized nervous system such as that of man. The system of local nerve nets, however continues to exist even in many advanced invertebrate groups and in the intestines of vertebrates.
what is the role of liver for the metabolism of carbohydrates
What are cell kind that form the xylem? What are the major features of those cells? The major cells of the xylem are the tracheids and the vessel elements (these only in angios
CHARACTERISTICS OF FEMALE'S SKELETON - 1. Skull is lighter. 2. Shoulders are nanow. 3. Sacrum is shorter but wider. 4. Pelvis is wider. 5.
Q. What is the cost-benefit relationship regarding sewage treatment as a strategy to fight water pollution? To treat sewage is greatly cheaper for society. The non-treated sewa
what is life process
Determine the various neurobehavioural characteristics Contemporary views of brain function tend to conceptualise localisation in interaction with a number of developmental and
What are the consumer and producer surplus? Consumer and producer surplus: At equilibrium P 1 Q 1 (as point B, here demand equals supply) Consumer surplus:
What is the photoperiod? The Photoperiod is the daily time period of light exposure of a living being and the photoperiod may differ according to the period of the year.
Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4
Is the effect of genetic drift likely to be the same in pop 1 and pop 2? How are genetic drift and pop size related? when there is strong selection against the homozygous recessive
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd