Male Reproductive System: Structure & Functions Reproduction is one of the important characters of life. New species are produced as a result of reproduction and genetic material is passed from …
Physiology of Kidneys Kidneys from urine by filtration and secretion of waste materials from the blood. In addition, the selective reabsorption by tubular cells contributes to the maintenance of homeostasis …
Introduction For body cells to function effectively, their environment should be maintained relatively constant (homeostasis). Continuous working of cells necessitates utilization of nutrients (glucose) and oxygen and results in the …
Definition Adenosine triphosphate (ATP) is a small molecule present in cells. It acts as a coenzyme and is a unit for the transfer of metabolic energy. It transports chemical energy …
Tissues of the Human Body Introduction A tissue is a group of cells having a common embryonic origin that functions together to carry out specialized activities. Tissues may be hard …
Connective Tissue It is the most abundant and widely distributed tissue system in the body. It binds together, supports and strengthens other body tissues as well as protects and insulates …
Epithelial Tissue An epithelial tissue or epithelium consists of cells arranged in continuous sheets, in either single or multiple layers. It covers body surfaces and lines hollow organs, body cavities, …
Introduction Cell signaling is part of any communication process that governs the basic activities of cells and coordinates cell actions. It is the ability of cells to perceive and correctly …
Types of Receptors Definition Receptors are chemical signal-receiving protein molecules found inside or on the surface of the target cell. Signaling cells send out chemical signals in the form of …
Introduction Cell junctions are also called as intercellular bridge. Cell junctions are contact points between the plasma membranes of tissue cells. Cell junctions consist of multi-protein complexes that provide contact …