10 Questions
Where is the obliquus abdominis internus muscle situated?
Under the external oblique muscle
What is the origin of the obliquus abdominis internus muscle?
Lateral angle of ilium and the adjacent part of poupart's ligament
What is the action of the obliquus abdominis internus muscle?
Similar to the external oblique muscle
What forms the anterior wall of the inguinal canal?
The medial part of obliquus abdominis internus muscle
Where is the abdominal or internal inguinal ring located?
At the upper opening of the inguinal canal
What is the blood supply to the obliquus abdominis internus muscle?
Circumflex iliac, intercostal, and lumbar arteries
What is the nerve supply to the obliquus abdominis internus muscle?
First two lumbar and last thoracic spinal nerves
Where does the rectus abdominis muscle extend from and to?
From sternum to pubis
What separates the two rectus abdominis muscles at the pelvis?
An interval of about 2 to 4 inches
What forms the floor of the abdomen where the rectus abdominis muscles are located?
Aponeuroses of the oblique and transverse muscles and the abdominal tunic
Learn about the origin, insertion, action, blood supply, and nerve supply of the subscapularis muscle. Understand its role in shoulder flexion and arm adduction.
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