the british class system

In this system the unit of length is foot (F), of mass is the pound (P) and of time is the second (S..

Systemic is the most widespread circulatory pathway. It accounts for supply of oxygenated blood to all the parts of the body and collection of deoxygenated blood from the tissues. The left ventricle of the heart opens into a major artery called the aorta. The aorta branches just abov..

Lymphatic System - Lymphatic System of a Human The lymphatic system is an accessory circulatory system which transports lymph, a fluid similar to plasma from the intercellular spaces of tissues to the blood. It is a one way route for the movement of interstit..

It is represented by a pair of kidneys, a pair of ureters and a urinary bladder. Kidney contain numerous units called nephrons which filter blood, remove urea and convert it into urine. It is collected in the urinary bladder through ureters (kidney ducts), temporarily stored and then periodically e..

Nervous system is well developed. It is represented by a nerve ring and a double, ventral nerve cord. The nerve ring is formed by a pair of supra oesophageal ganglia, a pair of suboesophageal ganglia and a pair of circum oesophageal connectives. The nerve cord produces segmental ganglia...

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 metabo..

The condition of the system when its macroscopic properties have definite measurable values, is the state of a system. If any of the macroscopic properties of the system changes such as its temperature, pressure etc., the state of the system is also said to ..

The skeleton of rat has 223 bones that are distributed into the axial skeleton and the appendicular skeleton. The axial skeleton consists of skull, vertebral column, sternum, ribs and ear ossicles. The appendicular skeleton is represented by girdles and limb bone..

The nervous system consists of a central nervous system, a peripheral nervous system and an autonomic nervous system. The central nervous system consists of a brain and a spinal cord. The peripheral nervous system consists of 12 pairs of c..

A system, which can exchange energy but not mass with the surroundings is called a closed system. For example, boiling water in a closed steel vessel is an example of a closed system. The energy can be gained or lost (through the steel walls) but not matter. Similarly..