Function. The external obliques on either side: Help rotate the trunk. Bilateral contraction of EO along with rectus abdominis and internal oblique flexes the trunk by drawing the pubis towards the xiphoid (like in crunches or sit-ups)
What is the function of the external oblique muscle quizlet?
Function: help rotate the trunk, but they perform a few other vital functions. These muscles help pull the chest, as a whole, downwards, which compresses the abdominal cavity. Although relatively minor in scope, the external oblique muscle also supports the rotation of the spine.
What is the function of the external oblique muscles and where are they found?
The external oblique muscles are located on the outer surface of the sides of the abdomen, on each side of the rectus abdominis. The muscles extend from the lower ribs to the pelvis. The external oblique muscles are responsible for the twisting of the trunk.
What is the function of the internal and external obliques?
Obliques. The external and internal oblique muscles rotate and side bend the trunk. These muscles also contribute to spinal stability.
What is the function of the internal oblique abdominis?
Function. Along with other abdominal wall muscles, the internal oblique muscle flexes and bends the trunk, assists forced expiration by depressing the lower ribs, and helps to maintain intra-abdominal pressure in defecation, micturition and childbirth.
What is the action of the external abdominal oblique muscle?
Along with other abdominal wall muscles, the external oblique muscle flexes the trunk, assists expiration by depressing the ribs, and assists to maintain intra-abdominal pressure in evacuation of luminal contents and supports intra-abdominal viscera.
Where is the external oblique?
External abdominal oblique is a paired muscle located on the lateral sides of the abdominal wall. Along with internal abdominal oblique and transversus abdominis, it comprises the lateral abdominal muscles.
Which of these is the function of the external oblique muscles flex vertebral column and compress abdominal wall?
As one of the primary movers in spine flexion, the rectus abdominis also helps to flex the vertebral column and bring the pelvis forward. The internal and external obliques are the other primary movers in spine flexion.
|Origin(s)||– Pubis – Pubic symphysis|
|Blood Supply||Superior and inferior epigastric arteries|
Where does the external oblique insertion?
Attachments of External Oblique Muscle: Origin & Insertion
External surfaces of ribs 5-12. a. Anterior iliac crest and abdominal aponeurosis to linea alba.
What is the general function of the external and internal oblique muscles as well as the transversus abdominis?
The main function of the rectus abdominis is to move the body between the ribcage and the pelvis. external oblique muscles – these are on each side of the rectus abdominis. The external oblique muscles allow the trunk to twist, but to the opposite side of whichever external oblique is contracting.
What is the internal oblique muscle?
Internal abdominal oblique is a muscle found on the lateral side of the abdomen. It is broad and thin. it forms one of the layers of the lateral abdominal wall along with external oblique on the outer side and transverse abdominis on the inner side. Its fibers are obliquely oriented hence the name.
What is an action of the external abdominal oblique muscle quizlet?
what is the action of the external oblique, and internal oblique ? bilateral : flexes vertebral column and compresses abdominal wall. what is the action of the transversus abdominis? which abdominal wall muscle is responsible for flexing vertebral column and compresses abdominal wall.
What is the action of the gluteus maximus muscle quizlet?
Action: extends and laterally rotates hip. What is the origin of the gluteus maximus?
What is the most powerful muscle in the body quizlet?
Terms in this set (5)
- Gluteus Maximus. Physically strongest.
- Tongue. Digests food, form words, and keep germs out, never stops.
- External Muscles of the Eye. Always fixates on exact point brain tells them to.
- Masseter. Proportionally strongest.
What is the action of the erector spinae muscle quizlet?
Primary extensors of the vertebral column and head. Together – straighten the back, returning it to the upright position from a flexed position, and pull the head posteriorly.
What is the erector spinae function?
The erector spinae muscles lie on each side of the vertebral column and extend alongside the lumbar, thoracic, and cervical sections of the spine. The erector spinae muscles function to straighten the back and provide for side-to-side rotation.
What is the action of the erector spinae muscle?
The function of the spinal erectors is to move the vertebral column. Bilateral contraction of these muscles extends the spine, while unilateral contraction causes lateral flexion (ipsilateral). They also help to maintain posture by steadying the spine on the pelvis during walking.