Intrinsic

Intrinsic refers to something that is inherent, essential, or natural. In the context of medicine, it can refer to various concepts, such as intrinsic factor, intrinsic muscles, or intrinsic pathway.

Intrinsic Factor

Intrinsic factor is a glycoprotein produced by the parietal cells of the stomach. It is necessary for the absorption of vitamin B12 in the small intestine. Deficiency of intrinsic factor can lead to pernicious anemia, a type of megaloblastic anemia.

Intrinsic Muscles

Intrinsic muscles are those that originate and insert within a specified part of the body. They are responsible for the fine control of that part. For example, the intrinsic muscles of the hand control the fine movements of the fingers.

Intrinsic Pathway

The intrinsic pathway is one of the two main pathways of blood coagulation. It is initiated when blood comes into contact with collagen in the vessel wall. This pathway is responsible for the slow, sustained response to vessel injury.

See Also

• Extrinsic
• Parietal cells
• Vitamin B12
• Pernicious anemia
• Megaloblastic anemia
• Collagen
• Blood coagulation

Intrinsic Resources
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