Ad
related to: z line anatomy
Search results
Results From The WOW.Com Content Network
A sarcomere is defined as the segment between two neighbouring Z-lines (or Z-discs). In electron micrographs of cross-striated muscle, the Z-line (from the German "zwischen" meaning between) appears in between the I-bands as a dark line that anchors the actin myofilaments. Surrounding the Z-line is the region of the I-band (for isotropic). I ...
Normally, the cardia of the stomach is immediately distal to the z-line [17] and the z-line coincides with the upper limit of the gastric folds of the cardia; however, when the anatomy of the mucosa is distorted in Barrett's esophagus the true gastroesophageal junction can be identified by the upper limit of the gastric folds rather than the ...
Z-line may refer to: J/Z (New York City Subway service) Z-line (IRC), a type of Internet Relay Chat access ban; Gastroesophageal junction, that joins the oesophagus to the stomach; Z-line, a border that separates and links sarcomeres within a skeletal muscle
All thin filaments are attached to the Z-line. Elastic filaments, 1 nm in diameter, are made of titin, a large springy protein. They run through the core of each thick filament and anchor it to the Z-line, the end point of a sarcomere. [citation needed] Titin also stabilizes the thick filament, while centering it between the thin filaments. It ...
These Z-discs are dense protein discs that do not easily allow the passage of light. The T-tubule is present in this area. The area between the Z-discs is further divided into two lighter colored bands at either end called the I-bands or Isotropic Bands, and a darker, grayish band in the middle called the A band or Anisotropic Bands.
Midaxillary line: A vertical line passing through the apex of the axilla. Posterior axillary line: A vertical line passing through the posterior axillary fold. Scapular line: A vertical line passing through the inferior angle of the scapula. Paravertebral line: A vertical line corresponding to the tips of the transverse processes of the vertebrae.
In anatomy, the zygomatic arch, or cheek bone, is a part of the skull formed by the zygomatic process of the temporal bone (a bone extending forward from the side of the skull, over the opening of the ear) and the temporal process of the zygomatic bone (the side of the cheekbone), the two being united by an oblique suture (the zygomaticotemporal suture); [1] the tendon of the temporal muscle ...
T-tubules (transverse tubules) are extensions of the cell membrane that penetrate into the center of skeletal and cardiac muscle cells.With membranes that contain large concentrations of ion channels, transporters, and pumps, T-tubules permit rapid transmission of the action potential into the cell, and also play an important role in regulating cellular calcium concentration.