Coronary Circulation
The coronary circulation is the circulatory system of the heart which allows the blood supply to the cardiac muscle and endocardium. The oxygen-rich…
The coronary circulation is the circulatory system of the heart which allows the blood supply to the cardiac muscle and endocardium. The oxygen-rich…
Myoglobin is a globular, iron-containing protein that stores molecular oxygen in muscles and delivers it to the oxidative cell systems. Structurally…
Hemoglobin is the oxygen-carrying molecule of the red blood cells of vertebrates. This protein represents more than 95% of the solid constituents of…
The circulatory system is the complex network of blood vessels and lymphatic ducts concerned with the transport of blood and lymph throughout the bo…
The pulmonary circulation is the uninterrupted flow of blood from the heart to the lungs, and from the lungs back into the heart. Also known as les…
The cell membrane is a thin layer of lipid, cholesterol, and proteins surrounding the cell. It isolates and protects the cell contents, such as the …
The Golgi apparatus is an intracellular reticular structure found in eukaryotic cells; it is the organelle associated with the synthesis of various…
In biology, a cell is an elementary living system capable of independent existence and self-replication and development. Contained and protected by …
The sweat glands are simple, usually unbranched tubular glands of the skin in man and mammalian animals (except moles, pangolins, sloths, and whales…
The Schwann cell is a support cell of the peripheral nervous system. They wrap around each motor neuron axon of the peripheral nerve fibers, produc…
Synapse is the site of nerve impulse transmission from one neuron to another, usually from the axon terminal endings to the dendrite of another ner…
The neuron ( nerve cell ) is the basic functional unit of the nervous system. It is highly specialized to transmit electrochemical impulses from one…
Also called glia , the neuroglia is a group of interstitial support cells whose bodies and outgrowths fill the spaces in the brain and spinal cord b…
The oligodendrocytes are neuroglia support cells that produce and maintain the myelin sheath of neuron axons in the central nervous system. Being s…
Aquaporins 4 are channels in the astrocyte membrane that regulate the extracellular osmotic pressure; in other words, they control the water balanc…
Astrocytes are specialized, support cells found in the human brain. Together with the oligodendrocytes and microglia, they form the neuroglia, which…
The human liver is the largest exocrine gland in the body. As part of the digestive system, it is also the largest metabolic organ and a massive det…
The Kupffer cells are phagocytic cells that line the liver sinusoids. Their main function is to engulf senescent red blood cells, potentially obstru…
Hepatocytes are the fundamental and essential cells that make up the liver tissue. Thus, they form the parenchyma of this organ. They are cuboid, se…
Osteoprogenitor cells (also known as osteogenic cells ) are mesenchymal stem cells that develops into osteoblasts. They are small, spindle-shaped ce…