Nervous system and sense organs, Biology

Assignment Help:

Nervous System and Sense Organs

The non-chordates also perform a variety of activities such as feeding, digestion, locomotion etc. For this aim, they have corresponding organs and organ systems working in a coordinated way. Furthermore, the environment of the animal, both internal and external, is never stable and the animal has to change its activities in relation to the changing environmental conditions. This involves escape from adverse climatic conditions or from a pursuing predator, catch food to overcome hunger, digests the food for energy needs, excrete waste material, and regulate the respiratory rate and so on. Towards this purpose, the concerned organs must be coordinated in an efficient and purposeful manner. This is brought about mostly by the nervous system.

Essentially, the animal has to perceive any change in the environment, compute the changes and finally translate these computations into requisite actions in a manner most profitable and adaptive to the animal. In the direction of this goal the nervous system has receptor components consisting of sense organs, coordinating centers in the central nervous system and the motor components controlling the motor elements. The system is connected all through so to say, by cables of nerves through which messages or impulses flow as if on a telegraphic system. The receptor organs receive messages from the environment that are transmitted to the central nervous system. The central nervous system is the decision centre that sends requisite orders to the effector organs through motor neurons.


Related Discussions:- Nervous system and sense organs

Blood flow, if i start in the superior mesenteric vain where do i have to g...

if i start in the superior mesenteric vain where do i have to go through to get to the left anterior circumflex humeral artery. by the way of the hepatic portal vein and the heart

Define the management of obesity, Define the Management of Obesity? Man...

Define the Management of Obesity? Management of obesity should be taken up with a clear understanding of the harsh realities of the problem and its outcome. It may be a frustra

Define methods used in combination with pasteurization, Define methods used...

Define methods used in combination with pasteurization? Typical other methods used in combination with pasteurization include: 1.  Refrigeration as in the case of   milk

Amoebae - protozoan, Amoebae - Protozoan Amoebae may be naked or enclo...

Amoebae - Protozoan Amoebae may be naked or enclosed in tests or shells. The marine, freshwater and parasitic naked amoebae have large commonly tubular lobopodia or fine strap

What is a population, What is a population? A population is a set of in...

What is a population? A population is a set of individuals of the similar species found in a given place in a given time.

Locomotion in octopus, LOCOMOTIO N IN OCTOPUS - From the ends of arms ...

LOCOMOTIO N IN OCTOPUS - From the ends of arms or ex-current siphon water is throughn with speed, opposite to it animal moves.

What is the phellogen? what its function, What is the phellogen? What its f...

What is the phellogen? What its function? The Phellogen also called as cork cambium is the meristematic plant tissue responsible for the formation of the periderm (the covering

How is water''s importance to life, How is water's importance to life refle...

How is water's importance to life reflected in the normal range of internal pH values that living things are likely to have?

What is combination therapy, What is Combination therapy Combination th...

What is Combination therapy Combination therapy - Use of combination therapy for treatment of immunosuppressed patients with invasive aspergillosis (IA), which has a high morbi

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

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!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd