external and internal body parts of human body

Pheretima posthuma is a common species of earthworm found living in burrows made in moist soil. It is nocturnal in habit. It has an elongated, cylindrical body which is metamerically segmented. Anteriorly the first segment is called peristomium. It encloses a mouth. Overhanging the mouth ..

. Optic fibers are as thick as a human hair. If a beam of light is send down a thin glass rod, total internal reflection traps the light inside the rod. This technique is called 'fiber optics'. Fiber optics finds its use in the medical field too. Endoscopes use fiber optics tech..

Nervous Control in Human Beings - Nervous System - The nervous system carries out the following functions: It perceives the changes around us through our senses. It controls and coordinates all the activities of the muscles in response to the changes outside. It also maintains the in..

Human Reproductive System - 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 ap..

Health is considered to be the state of perfect functioning of body and mind, unhindered by diseases. Disease is the malfunctioning of the organism or part of it due to infection, inherent weakness or environmental stress, that upsets the normal physiological functioning o..

The transport system in animals is called the circulatory system. The materials are transported from one part of the body to another by a mass flow system which is the circulatory syste..

Circulatory System - The transport system in animals is called the circulatory system. The materials are transported from one part of the body to another by a mass flow system which is the circulatory system. The animals, particularly the more advanced forms, have a higher metab..

The closed circulatory system can be represented as follows. Diagram showing inter-relationship between artery, vein and capillary The closed blood vascular system is a very well developed system This is so because, a) The organisms have a thick body wall to prevent the evaporation of wat..

The nervous system carries out the following functions: It perceives the changes around us through our senses It controls and coordinates all the activities of the muscles in response to the changes outside It also maintains the internal environment of the body by coord..

It controls and coordinates all the activities of the muscles in response to the changes outside. It also maintains the internal environment of the body by coordinating the functions of the various internal organs and the involuntary muscle..