The lymph node is small, oval bean-shaped structure of lymphatic system formed of lymphoid tissue enclosed in a connective tissue capsule. These occur in association with the lymphatic vessels and serve as filters for the blood. They are typically found concentrated near junctions of the major lymphatic vessels, most prominently in the neck, groin, and […]
Basics
50 Iron Rich Foods You Can Add to Your Diet
Iron is a major constituent of blood and is one of the minerals we should eat regularly in our diet. There are many iron rich foods available across the food groups. [Read more about the dietary requirement of iron] Iron deficiency leads to anemia and oxygen carrying capacity of the blood is reduced. It leads […]
Lymphatic System Structure and Function
The lymphatic system is a part of the circulatory system [also called subsystem of the circulatory system] that is formed by a network of network of vessels [other than arteries and veins], tissues, and organs. The main function of the system is Maintainfluid balance in the body by collecting excess fluid depositing them in the bloodstream. Provides immunity […]
Bone marrow – Structure, Composition and Functions
Bone marrow is soft, spongy, gelatinous tissue that fills the centers of bones known as medullary cavities. Bone marrow is highly vascular meaning that it is enriched with blood vessels and capillaries. Each day bone marrow produces hundreds of billions of new blood cells. Bone marrow takes over from the liver as the major hematopoietic organ […]
Electron microscope – Uses, Advantages and Disadvantages
An electron microscope is a type of microscope that uses an electron beam for illumination and creates an enlarged image of the specimen. (In contrast, light microscope uses visible light for purpose of illumination). An electron microscope has great resolving power and can create much higher magnification as compared to a light microscope. Hence it […]
Circle of Willis Anatomy and Function
The circle of Willis is a polygon-shaped arterial anastomosis in the brain formed by internal carotid and vertebral artery systems around the optic chiasm and infundibulum of the pituitary stalk in the suprasellar cistern. It is also known by names of circulus arteriosus cerebri, Willis’ circle, loop of Willis, cerebral arterial circle, and Willis polygon […]
Penis Anatomy, Function, Blood and Nerve Supply
The penis is an external organ of the male reproductive system. It has two main functions. It acts as the intromittent organ that also serves as urinal duct. An intromittent organ is a general term for an external organ of a male organism that is specialized to deliver sperm during copulation For sexual intercourse, the penis undergoes erection during erotic stimulation and becomes […]
Human Chorionic Gonadotropin – Structure, Function, Test and Uses
Human chorionic gonadotropin (hCG) is a hormone produced during pregnancy by the placenta. It provides nourishment to the egg after it has been fertilized and attached to the uterine wall. HCG is used to detect pregnancy as well as to monitor it. It is also elevated in certain cancers, hence is used as a tumor […]
Hypodermoclysis or Subcutaenous Infusion – Indications, Method and Uses
Subcutaneous infusion, or hypodermoclysis, is a method in which fluids are infused into the subcutaneous space via small-gauge needles. Clysis means the introduction of large amounts of fluid into the body usually by parenteral injection to replace that lost. So hypodermoclysis means via subcutaneous tissue and phleboclysis means via the vein. After the fluid is […]
Great Saphenous Vein and Lesser Saphenous Vein Anatomy
Great saphenous vein and small saphenous veins are veins of the lower limb. The great saphenous vein is the longest vein in the body that originates near medial malleolus and goes up to the level of groin skin crease. blood from the foot, leg, and thigh to the deep femoral vein at the femoral triangle. It […]