What to know about cardiac muscle tissue
Cardiac muscle tissue, or myocardium, is a specialized type of muscle tissue that forms the heart. This muscle tissue, which contracts and releases involuntarily, is responsible for keeping the heart…
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. It consists of: · Sinoatrial node · Atrioventricular node · Atrioventricular bundle (bundle…
Heart Anatomy
Your heart is located between your lungs in the middle of your chest, behind and slightly to the left of your breastbone (sternum). A double-layered membrane called the pericardium surrounds…
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 heart works as a pump that pushes blood to the organs, tissues,…
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 maintain equilibrium, usually by a system of feedback controls, so…
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 F98.6∘F98, point, 6, space, degree, F/ 37.0\,^\circ\text C37.0∘C37, point, 0, space,…
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 of the cell is negatively charged. Depolarization occurs when the…
Cell Theory
Cell Theory was proposed by the German scientists, Theodor Schwann, Matthias Schleiden, and Rudolf Virchow. The cell theory states that: All living species on Earth are composed of cells.A cell…
Cell Structure
The cell structure comprises of certain components with specific functions essential to carry out life’s processes. These components include- cell wall, cell membrane, cytoplasm, nucleus, and cell organelles. Read on…
Characteristics of Cells
Following are the various important characteristics of cells: Cells provide structure and support to the body of an organism.The cell interior is organized into different individual organelles surrounded by a…
