General Concepts 3 min read
The Conducting System of the Heart
The cardiac conduction system is a collection of nodes and specialised conduction cells that initiate and co-ordinate contraction of the heart muscle.…
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Heart Anatomy
Your heart is located between your lungs in the middle of your chest, behind and slightly to the left of…
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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…
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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…
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Cell Theory
Cell Theory was proposed by the German scientists, Theodor Schwann, Matthias Schleiden, and Rudolf Virchow. The cell theory states that:…
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Cell Structure
The cell structure comprises of certain components with specific functions essential to carry out life’s processes. These components include- cell…
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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…
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Muscle Tissue and Motion
Muscle tissue is characterized by properties that allow movement. Muscle cells are excitable; they respond to a stimulus. They are…