Rectus abdominis muscle definition

They are commonly known as abdominals or abs muscles and are present in the pair at the front wall of the abdomen. Rectus abdominis muscle TA muscle of ventral abdominal wall flanking the linea alba and characterized by tendinous intersections separating its length into multiple bellies.

In addition to these muscles the rectus sheath also contains neurovasculature of the anterior abdominal wall.

Rectus abdominis muscle definition. The rectus abdominis is made up of a pair of parallel muscles that extend up the entire length of the stomach. In Latin rectus means straight and abdominis means abdominal. The medial borders of the left and right rectus abdominis muscles perpendicular to the surface of the muscles are used for the end points for the measurement at the umbilicus the area with the largest separation10 This was repeated twice and the average measurement recorded.

Rectus abdominis muscle TA muscle of ventral abdominal wall flanking the linea alba and characterized by tendinous intersections separating its length into multiple bellies. Origin crest and symphysis of the pubis. Insertion xiphoid process and fifth to seventh costal cartilages.

Action flexes lumbar vertebral column draws thorax. Medical Definition of rectus abdominis. A long flat muscle on either side of the linea alba extending along the whole length of the front of the abdomen arising from the pubic crest and symphysis inserted into the cartilages of the fifth sixth and seventh ribs and acting to flex the spinal column tense the anterior wall of the abdomen and.

The rectus abdominis muscle is paired muscle that runs vertically either side of the linea alba on the anterior surface of the abdominal wall. The linea alba is a band of connective tissue that divides the two halves of the muscle vertically. Any of various straight muscles as of the abdomen eye neck and thigh.

New Latin mūsculus rēctus from Latin straight muscle. See rectum American Heritage Dictionary of the English Language Fifth Edition. Copyright 2016 by Houghton Mifflin Harcourt Publishing Company.

A large muscle in the front of the abdomen that assists in regular breathing movements supports the muscles of the spine while a person lifts something and keeps the intestines and other abdominal organs in place. Any of various straight muscles as of the abdomen eye neck and thigh. New Latin mūsculus rēctus from Latin straight muscle.

See rectum American Heritage Dictionary of the English Language Fifth Edition. Copyright 2016 by Houghton Mifflin Harcourt Publishing Company. The rectus abdominis and pyramidalis muscles are contained within the rectus sheath as paired midline abdominal wall muscles.

The pyramidalis muscle can be absent in 20 of people. Contraction of the rectus abdominis and pyramidalis muscles causes flexion of the lumbar spine. The rectus sheath is a tendon sheath aponeurosis which encloses the rectus abdominis and pyramidalis muscles.

It is an extension of the tendons of the external abdominal oblique internal abdominal oblique and transversus abdominis muscles. In addition to these muscles the rectus sheath also contains neurovasculature of the anterior abdominal wall. Its function is to protect the contents it.

Rectus abdominis is the muscle that runs vertically adjacent to the umbilicus along the whole abdomen from the sternum up to the pubic bone. They are commonly known as abdominals or abs muscles and are present in the pair at the front wall of the abdomen. Rectus rectus abdominis pyramidalis superior inferior epigastric ventral rami T7 T12 On the anterior abdominal wall identify the ___ ___ of the rectus sheath.

The rectus sheath is formed by the ___ of all three pairs of ___ abdominal wall muscles external oblique internal oblique transversus abdominis as they fuse towards their ___ attachment at the ___ ___. Definition Location Function. Chapter 8 Lesson 5.

One of the most coveted body parts is a six-pack set of abs a muscle that scientists call rectus. Recti refers to your ab muscles called the rectus abdominis When the ab muscles move aside like this the uterus bowels and other organs have only a thin band of connective tissue in front. The rectus abdominis muscle is a type 3 MathesNahai muscle that receives blood supply from the inferior epigastric artery dominant pedicle and the superior epigastric artery which run posteriorly to the muscle close to the posterior rectus sheath.

The rectus abdominis spans the front of the abdomen and is the most prominent of the abdominal muscles. The rectus abdominis muscles are a pair of long muscles that run vertically up the front of the abdomen stretching from the pubis to the xiphoid process. They compress the viscera and tense the abdominal wall.

Youll notice in the picture below that the lower part of the rectus abdominis rests underneath the transversus abdominis and the. The rectus abdominis muscle is contained in the rectus sheath which consists of the aponeuroses of the lateral abdominal muscles. The outer most lateral line defining the rectus is the linea semilunaris.

Bands of connective tissue traverse the rectus abdominis separating it into distinct muscle bellies. In the abdomens of people with low. Start studying Rectus Abdominis.

Learn vocabulary terms and more with flashcards games and other study tools. Muscular branches from intercostal nerves T7-T12. Tap card to see definition.

Any strenuous exercises where your ab muscles are bulging out. Holding your baby on one hip if its painful. Lifting or carrying heavy loads.

Coughing without supporting your ab muscles. The rectus abdominis muscle gives rise to abdominal markings. The lateral border of this muscle is indicated by the linea semilunaris a curved line running from the 9th rib to the pubic tubercle.

The linea alba is a fibrous line that splits the rectus abdominis into two. It is visible as a vertical groove extending inferiorly from the xiphoid.