Stretching FAQ 1.6.1 - Proprioceptors

Featured: Featured Stories | Picture Gallery

Amazon | Pro Publisher Professional Business Labels

Chat11.com Web Bible11.com MyBibleCenter.com

Proprioceptors

Stretching FAQ

Subject: 1.6.1 - Proprioceptors

The nerve endings that relay all the information about the musculoskeletal system to the central nervous system are called "proprioceptors". Proprioceptors (also called "mechanoreceptors") are the source of all "proprioception": the perception of one's own body position and movement. The proprioceptors detect any changes in physical displacement (movement or position) and any changes in tension, or force, within the body. They are found in all nerve endings of the joints, muscles, and tendons. The proprioceptors related to stretching are located in the tendons and in the muscle fibers.

There are two kinds of muscle fibers: "intrafusal muscle fibers" and "extrafusal muscle fibers". Extrafusil fibers are the ones that contain myofibrils (See "1.2 - Muscle Composition") and are what is usually meant when we talk about muscle fibers. Intrafusal fibers are also called "muscle spindles" and lie parallel to the extrafusal fibers. Muscle spindles, or "stretch receptors", are the primary proprioceptors in the muscle. Another proprioceptor that comes into play during stretching is located in the tendon near the end of the muscle fiber and is called the "golgi tendon organ". A third type of proprioceptor, called a "pacinian corpuscle", is located close to the golgi tendon organ and is responsible for detecting changes in movement and pressure within the body.

When the extrafusal fibers of a muscle lengthen, so do the intrafusal fibers (muscle spindles). The muscle spindle contains two different types of fibers (or stretch receptors) which are sensitive to the change in muscle length and the rate of change in muscle length. When muscles contract it places tension on the tendons where the golgi tendon organ is located. The golgi tendon organ is sensitive to the change in tension and the rate of change of the tension.

Key questions:

• What are proprioceptors?
• Common mis-spelling: proprioreceptors

• Stretching FAQ
  • Stretching FAQ Part 1 - Long version
  • Stretching FAQ Part 2 - Long version
  • Stretching FAQ Part 3 - Long version
  • Stretching FAQ Part 4 - Long version

Could not find Stretching_FAQ/BottomAd1?Create

Search for books about:

Bobsgear - Get A Free Enterrpise Wiki Space!
Review: The Bobsgear Project was started to develop a variety of Confluence plugins. This installation of the Confluence Enterprise wiki includes flexible attachments, many Confluence plugins, personal blogs, interesting articles, and more. Bobsgear already has spaces related to politics, art and photography wiki, technical issues wiki, ediscovery wiki, health, Christian theology and Sabbath School wiki, the bible, book reviews, and quotations. Bobsgear allows free signup, and invites anyone to create a free hosted Confluence wiki space.

NEW USERS CLICK HERE! for a quick introduction to Wiki.

Elapsed:0