![H Band Thumbnail](/_next/image?url=https%3A%2F%2Fcdn.sanity.io%2Fimages%2Fobhirpvy%2Fproduction%2F7ed1b829017a060e9b33f258d50199ae5fbb7378-374x251.gif%3Fw%3D600%26q%3D40&w=3840&q=50)
Glossary Term
H Band
The H-Band is a lighter portion of the A-Band in a sarcomere where there is no overlap between the thinner filaments (actin) and the thicker filaments (myosin). For example, when a muscle contracts, actin and myosin cross-bridging occurs in the region of the A-band until the H-band is reached where no overlap occurs.
H-Band: Refers to the central zone of a sarcomere that looks lighter under a microscope. This area of the sarcomere is a lighter portion of the A-band where there is no overlap between the thinner filaments (actin), and the thicker filaments (myosin).
- Example, when a muscle contracts, actin and myosin cross-bridging occurs in the region of the A-band until the H-band is reached where no overlap occurs.
- Saladin, K. (2014). Anatomy & physiology: The unity of form and function. McGraw-Hill Higher Education, New York. ISBN: 9780073403717
Image Author User:Sameerb in English WP
Comments
Synonyms
- H zone
- Bare zone
- Light zone