internal or external division

Prosthesis - Prosthesis is implanting an artificial substitute for a body part either externally or even internally. The branch of surgery dealing with prosthesis is called Prosthetics . Intra ocular lens implanted in the eye following a cataract surgery is a good example. Artif..

Section Formula - To find the co-ordinates of a point C (x, y) which divides the line segment joining the two points A (x 1 ,y 1 ) and B (x 2 ,y 2 ) in the ratio m:n ( internally and externally..

In multicellular organisms, the male gametes called the are produced by the male reproductive part and the female gametes called the eggs are produced by the female reproductive part. The male gamete of one individual fertilizes the female gamete of another individual to produce the zygote. Th..

This theory blames the external or environmental forces that gradually damages the internal cells and organs leading to ageing. This theory includes Living theory Free radius theory Cross linking theory Wear and tear theory Theory of error catastrophe Somatic mutation theo..

Question: Which muscles are responsible for expiration? 1. external intercostal 2. internal intercostal 3. a and abdominal 4. b and abdominal Answer: ..

There appear to be many structures that are similar because of the function they carry out and in their external appearance. However, these structures differ internally. Such structures are called analogous structures. For example, wings of bat and butterfly are similar in appe..

While the nervous system and endocrine system have their own features, they have a common method of communication. Both the systems release chemicals to communicate between cells. Together these two systems carry out a very complex process of maintaining a homeostatic (balanced) internal..

> In humans, the eyes are directed forward and give binocular vision. Ears are sensory organs that function as the organs of hearing and the organs for equilibrium. It has receptors that convert the vibrations into nervous impulses that are transmitted via the auditory nerve to the brain. Each ear ..

In human beings, sexual reproduction takes place. Sexes are separate and hence they are known to exhibit sexual dimporphism. Males have sex organs called the tetes while the females have sex organs called the ovaries. Even in the external appearance, males and females show differences. So..

Kingdom : Metazoa Subkingdom: Eumetazoa Division : Bilateria Grade : Eucoelomata Phylum : Arthopoda Class : Insecta Order : Orthoptera Family : Blattidae Genus : Periplaneta Species : america..