Neuron: Definition, Classification, Structure and Functions

Nerves and specialized cells (neurons) comprise the nervous system. Structurally, the nervous system includes two parts such as CNS (the central nervous system) and the peripheral nervous system. The nervous system is highly specialized epithelium tissue for reception, discharge, and transmission of stimuli. The neuron or nerve cell is the structural and functional unit of … Read more

Hemorrhage: Causes and Effects

Hemorrhage is the escape of blood from a blood vessel or the heart. In rupture of the wall of a vessel, hemostatic mechanisms start to control the hemorrhage. A small hemorrhage may have no bad effect but an acute massive hemorrhage threatens the life. Chronic blood loss produces an iron-deficiency anemia. Hemorrhage may be local … Read more

Blood: Definition, Components and Functions

image of Blood cells

British physiologist William Harvey (1628) first of all expressed the plan of special type of system within the body. This system is called the blood circulatory system.  In our body, this special system perform several functions like carrying food substances, respiratory gases, excretory wastes, and control body temperature and metabolic activities, prevent infection and coordinate … Read more

Spermatogenesis Vs Oogenesis

Gametes are produced by the animals through meiosis cell division from diploid mother cells (gonads). There are two types of gonads such as testis in males and ovaries in females. The process of gamete production (ovum and sperm) is known as gemetogenesis (Gr. Gamos=marriage; genesis=origin). Testes produce male gametes or sperms through the process of … Read more

Food and Nutrition

image of Food and Nutrition

Every day we eat food to live. Food is any substance that is consumed by animals to produce energy and aids in the body’s nutrition and growth. It is the animal or plant origin that contains proteins, lipids, carbohydrates, vitamins, and minerals. These components are known as essential nutrients. The nutrients are taken by the … Read more