General Concepts 2 min read
Anatomy of the Heart and Cardiovascular System
The heart and circulatory system make up your cardiovascular system. The heart and circulatory system make up your cardiovascular system. Your…
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Homeostasis: positive/ negative feedback mechanisms
Homeostasis The biological definition of homeostasis is “the tendency of an organism or cell to regulate its internal environment and…
General Concepts 7 min read
Homeostasis
Introduction What’s the temperature in the room where you’re sitting right now? My guess would be that it’s not exactly 98.6\,^\circ\text…
General Concepts 3 min read
Depolarization Repolarization of the Cell Membrane
Nerve cells at rest have an electrical charge across their membranes: the outside of the cell is positively charged and the inside…
General Concepts 2 min read
Cell Theory
Cell Theory was proposed by the German scientists, Theodor Schwann, Matthias Schleiden, and Rudolf Virchow. The cell theory states that:…
General Concepts 3 min read
Cell Structure
The cell structure comprises of certain components with specific functions essential to carry out life’s processes. These components include- cell…
General Concepts 2 min read
Characteristics of Cells
Following are the various important characteristics of cells: Cells provide structure and support to the body of an organism. The…
General Concepts 5 min read
Organ System
Organ System Definition An organ system is a group of organs that work together to perform a certain function in an organism’s body.…
General Concepts 4 min read
Organ
Organ Definition An organ is a self-contained group of tissues that performs a specific function in the body. The heart, liver, and stomach are…
General Concepts 3 min read
Muscle Tissue and Motion
Muscle tissue is characterized by properties that allow movement. Muscle cells are excitable; they respond to a stimulus. They are…
General Concepts 8 min read
Classification Of Epithelial Tissues
Epithelial tissues are classified according to the shape of the cells and number of the cell layers formed . Cell…
General Concepts 5 min read
Epithelial Tissue
Most epithelial tissues are essentially large sheets of cells covering all the surfaces of the body exposed to the outside…