What is a tendon an extension of?
What is a tendon an extension of?
A tendon is a cordlike extension of the preceding three linings. It extends beyond the muscle tissue to connect the muscle to a bone or to other muscles.
What is connected to a tendon?
A tendon is a fibrous connective tissue which attaches muscle to bone. Tendons may also attach muscles to structures such as the eyeball. A ligament is a fibrous connective tissue which attaches bone to bone, and usually serves to hold structures together and keep them stable.
What is a tendon of origin?
Basic Anatomy of a Tendon Each muscle has two tendons, one proximally and one distally. The purpose of the tendon is to transmit forces generated from the muscle to the bone to elicit movement. The proximal attachment of the tendon is also known as the origin and the distal tendon is called the insertion.
Where do tendons originate?
Although it is known that most tendons originate from the muscle and adhere to the bone, some tendons may be the starting point for muscles, or two muscles are connected to each other through a tendon [22, 23].
What are the two types of tendons?
The primary cell types of tendons are the spindle-shaped tenocytes (fibrocytes) and tenoblasts (fibroblasts). Tenocytes are mature tendon cells that are found throughout the tendon structure, typically anchored to collagen fibres. Tenoblasts are spindle-shaped immature tendon cells that give rise to tenocytes.
Where does tendonosis occur in the human body?
Tendonosis (also spelled tendinosis) is a chronic condition involving deterioration of collagen (a structural protein) in the tendons. Tendonosis is caused by chronic overuse of a tendon. It can occur in any tendon, but most often occurs in the tendons of the: heel (in the Achilles tendon)
What does it mean when you have a tendon injury?
A tendon injury may seem to happen suddenly, but usually it is the result of many tiny tears to the tendon that have happened over time. Doctors may use different terms to describe a tendon injury. You may hear: Tendinitis. This means “inflammation of the tendon.” Tendinosis.
What makes a tendon return to its normal length?
They’re made up of densely packed collagen fibers arranged in parallel along with a small amount of a protein called elastin, which allows tendons to return to their normal length after contracting or stretching. In comparison to muscles, tendons are relatively poorly vascularized, meaning they have less blood flow.
What does the term tendinitis mean in medical terms?
The term tendinitis implies inflammation in a tendon. When tendinitis is present, inflammatory cells are visible under a microscope within the tendon fibers. For many years, tendinitis was the term used to describe most tendon injuries.