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i am doing an assignment on muscles and i need to know the functions of muscles. can any1 help?

2006-11-08 06:29:44 · 5 answers · asked by carynmarie 2 in Science & Mathematics Biology

5 answers

A tendon (or sinew) is a tough band of fibrous connective tissue that connects muscle to bone, or muscle to muscle. They are similar to ligaments except that ligaments join one bone to another. Tendons are designed to withstand tension. Typically tendons connect muscles to bones; together, a combination of tendons and muscles can only exert a pulling force.
Composition

Tendons are composed mainly of water, type-I collagen and cells called tenocytes. Minor fibrillar collagens, fibril-associated collagens and proteoglycans are present in small quantities and are critical for tendon structure. Most of the strength of tendon is due to the vertical, hierarchical arrangement of densely-packed collagen fibrils. Tenocytes are specialized fibroblasts responsible for the maintenance of collagen structure.
Anatomy

The origin of a tendon is where it joins to a muscle. Collagen fibers from within the muscle organ are continuous with those of the tendon. A tendon inserts into bone at an enthesis where the collagen fibers are mineralised and integrated into bone tissue.

Tenocytes produce collagen molecules which aggregate end-to-end and side-to-side to produce collagen fibrils. Fibril bundles are organised by tenocytes to form fibres. Collagen fibres coalesce into macroaggregates. Groups of macroaggregates are bounded by connective tissue endotendon and are termed fascicles. Groups of fascicles are bounded by the epitendon and peritendon to form the tendon organ.

Blood vessels may be visualised within the endotendon running parallel to collagen fibres, with occasional branching transverse anastomoses.

The internal tendon bulk is thought to contain no nerve fibres, however the epi- and peritendon contain nerve endings, while Golgi tendon organs are present at the junction between tendon and muscle.

Tendon length varies in all major groups and from monkey to person. Tendon length is practically the discerning factor where muscle size and potential muscle size is concerned. For example, a man with a 1 centimetre biceps tendon will have greater potential for muscle mass than a man with a longer tendon. Cases in point: Bodybuilders will generally have short tendons and are said to have 'great genetics', however not all bodybuilders are blessed with short tendons. Examples of people with short tendons (in particular the upper arms) are Casey Viator and Arnold Schwarzenegger. Tendon length is determined exclusively by genetics.

[edit] Other information

Tendonitis refers to inflammation of a tendon.

The Achilles tendon is a particularly large tendon connecting the heel to the muscles of the calf. It is so named because the mythic hero Achilles was said to have been killed due to an injury at this spot.

Sinew was also widely used in the medieval times as a form of ancient elastic. Some specific uses include using sinew as thread for sewing, attaching feathers to arrows (see fletch), lashing tool blades to hafts, etc. It also recommended in survival guides as a material from which strong ropes can be made for items like traps or living structures.

Tendon (particularly beef tendon) is used as a food in some cuisines.

2006-11-09 02:13:07 · answer #1 · answered by sue l 4 · 0 0

Tendons attach your muscles to the bones. Muscles by contracting and relaxing make your body move. This is the shortest explanation.

2006-11-08 06:34:29 · answer #2 · answered by Cold Bird 5 · 0 0

tendon are extension of connective tissue which surround the muscles,they connect muscles to bones. the only different between tendon and ligament is that they are non elastic while ligament are elastic.i hope this will help you.

2006-11-08 08:15:27 · answer #3 · answered by Tosin A 2 · 0 0

They connect muscle to bone

2006-11-08 06:34:47 · answer #4 · answered by swordman 2 · 0 0

they hold muscle to bone.

2016-03-19 05:29:34 · answer #5 · answered by ? 4 · 0 0

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