| Term | Definition |
|---|
| Psoas major | This muscle is of particular importance because it merges with the iliacus to form the iliopsoas which is the prime flexor of the thigh. It is known as the tenderloin behind the meat counter of markets. |
| Sternum | This structure has three segments that are formed from six bones. It is on the anterior side of the bony thorax and forms part of the axial skeleton. |
| iliac crest | This structure extends from the anterior superior iliac spine posteriorly to the posterior superior iliac spine. It serves as an origin and insertion for a number of muscles. |
| Umbilicus | This structure is the scar where the umbilical cord met the abdominal wall at the linea alba. It is at the level of the intervertebral disc between lumbar 3 and lumbar 4 vertebrae. It is the site of hernias in some individuals. |
| Lumbar vertebra 5 body | This structure is important because the intertubercular plane runs through it. This is one of the planes used to divide the abdomen into nine regions. Enter Hint |
| Rectus abdominis muscle | The four divisions of this muscle on each side of the abdominal wall result from three tendinous intersections of this muscle. The muscle is enclosed within the aponeurosis of the internal abdominal oblique, much like sandwich meat in a pita pocket. Functionally it is of importance because it participates in the abdominal press. |
| Iliacus muscle | This muscle is of particular importance because it merges with the psoas major to form the iliopsoas which is the prime flexor of the thigh. We did not see this muscle separate from the iliopsoas muscle in lab, but it is an important muscle none the less. |
| Rectus sheath | This is the name for the three abdominal aponeuroses on the anterior side of the abdominal wall. |
| Umbilical region | If the abdomen is divided into nine regions, this region is the middle region of the abdomen, having the left and right lumbar regions adjacent to it. |
| Xiphoid process | This structure is the most inferior of the sternebrae. In a young person it is hyaline cartilage, but is bone by the time one is 40 years old. It is sometimes broken when a person receives CPR. It is part of the origin for the diaphragm and insertion for the rectus abdominis muscle. It also has a demifacet on each side that articulates with the inferior portion of the costal cartilage of rib 7. |
| Quadratus Lumborum muscle | This muscle is the most dorsal of the three posterior abdominal wall muscles. It can be seen in two places in the cat. It can be seen in the thoracic cavity running along the vertebral border and it can be found dorsal to the psoas major in the abdomen. It is relatively small in humans |
| Subcostal plane | There are two transverse planes commonly used to divide the abdomen into nine regions for study purposes. This is the superior of these. It is at the level of lumbar 3 vertebral body. |
| left and right liac regions | This is the name for two abdominal regions if it is divided into nine regions. There is a left and right with this name. They are inferior to the intertubercular plane and lateral to the hypogastric region. They are sometimes called inguinal regions or the groin. |
| Psoas minor muscle | This muscle is the most ventral of the three posterior abdominal wall muscles. It is missing in about 40% of the population. |
Combine with other sets
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