What are tendinous intersections quizlet?

What are tendinous intersections quizlet?

tendinous intersections. The rectus abdominis has small connective tissue bands called tendinous intersections, located horizontally across the muscle dividing it into small segments, and the muscle is enclosed by the rectus sheath.

What is Tendinous inscription?

Description: The Rectus Abominis is crossed by fibrous bands, three in number, which are named the tendinous inscriptions; one is usually situated opposite the umbilicus, one at the extremity of the xiphoid process, and the third about midway between the xiphoid process and the umbilicus.

What is the role of the tendinous bands?

It works with the extensor digitorum communis to the small finger. The muscle belly is in the forearm. The tendon travels through a tough band or retinaculum at the wrist and then into the hand. The band of tissue, or retinaculum, holds the tendons in place but allows them to slide up and down the arm.

What is the arcuate line?

The arcuate line is an area of demarcation visible from the peritoneal surface of the abdominal wall, residing one-third the distance between the umbilicus and the pubis. The arcuate line can be a sharp demarcation, or it can be a gradual transition zone where the fibers of the posterior sheath gradually disappear.[1]

What are tendinous intersections or inscriptions )?

The rectus abdominis muscle is crossed by three fibrous bands called the tendinous intersections or tendinous inscriptions. One is usually situated at the level of the umbilicus, one at the extremity of the xiphoid process, and the third about midway between the two.

Which of the following muscles contains tendinous intersections?

The rectus abdominis muscle is crossed by three horizontal fibrous bands called the tendinous intersections. Typically they are found at the level of the umbilicus, the inferior tip of the xiphoid process, and halfway between these two points.

What muscles does the tendinous sheath of the abdomen extend out of?

It is an extension of the tendons of the external abdominal oblique, internal abdominal oblique, and transversus abdominis muscles.

What happens when the extensor digitorum muscle contracts?

The extensor hood spreads out further distally into a median band which attaches to the middle phalanx and two lateral bands which attach to the distal phalanx. Contraction of the extensor digitorum muscle tightens this tendon which acts on these attachments and extends the fingers.

What is the linea alba?

The linea alba (Latin for white line) is a single midline fibrous line in the anterior abdominal wall formed by the median fusion of the layers of the rectus sheath medial to the bilateral rectus abdominis muscles. It attaches to the xiphoid process of the sternum and the pubic symphysis.

What is the line of Douglas?

The arcuate line of rectus sheath, the linea semicircularis, the arcuate line, or the semicircular line of Douglas, is a horizontal line that demarcates the lower limit of the posterior layer of the rectus sheath. It is commonly known simply as the arcuate line.

What is Linea Semilunaris?

The linea semilunaris is a vertical, curved structure that runs along the lateral edges of the rectus abdominis muscle in the anterior abdominal wall. It is the site of union where tendons of the lateral abdominal muscles meet the sheath surrounding the rectus abdominis muscle, also known as the rectus sheath.

What is the purpose of the tendinous intersection?

The tendinous intersections also serve as protective structures to the rectus abdominis. They are believed to be protective devices that keep us from rupturing the entire length of the rectus abdominis 2.

Where are the tendinous intersections of the rectus abdominis?

tendinous intersections of rectus abdominis. usually three but occasionally four transverse fibrous bands or partial bands occurring at intervals as interruptions of the fleshy, contractile portions of the rectus abdominis muscle; they usually occur at and superior to the umbilicus.

Where are the tendons located in Intersection syndrome?

Intersection syndrome is a condition of tendon inflammation of the tendons over the back of the forearm and wrist. 1  The pain of intersection syndrome is located about 4 cm above the back of the wrist joint where two major tendons that move (straighten) the fingers cross over each other. Intersection syndrome is a type of wrist tendonitis .

How is Intersection syndrome treated in the wrist?

Treatment of intersection syndrome is almost always easily accomplished with some simple steps. Foremost, the tendons require rest, and this means avoiding activity with the affected wrist for at least 3-5 days while the inflammation subsides.