QuestionSBA
QuestionChoice
This is the outermost muscle of the abdomen with its fibres runnning inferomedially. It originates at the 5-12 ribs and inserts onto the iliac crest and pubic tubercle where it forms part of the inguinal ligament.
10009330
a
External oblique
QuestionChoice
This is the deepest muscle of the abdomen with fibres that run transversely.The transversalis fascia is found deep to this and becomes the thoracolumbar fascia.
10009333
d
Transversus abdominis
QuestionChoice
This is found in the midline where it is separated by a white strip down the middle known as the linea alba. This muscle is identified by its unique tendinous intersections which is white and found transversely across the muscle in segments.
10009331
b
Rectus abdominis
QuestionChoice
This lies deep to the external oblique with its fibres running superiomedially. It therefore originates where the external oblique inserts at the inguinal ligament, iliac crest and thoracolumbar fascia and inserts at ribs 10-12.
10009332
c
Internal oblique
QuestionChoice
This is a muscle of the thorax rather than the abdomen. It originates from the lateral parts of ribs 1-8 and inserts onto the medial aspect of the scapula.
10009334
e
Serratus anterior
Concept
Chapter
2693
5335
Anterolateral abdominal wall muscles
Topic
197
Abdominal anatomy
14414
Picture
1773
115 - Anterolateral Abdominal Wall Muscles (left external oblique).png
images/i7n5rnh21682953222421.jpg
images/i7n5rnh21682953222421_256.jpg
images/i7n5rnh21682953222421_512.jpg
JSkKDQJcp4RoCHd3iIV4eAmHkaAo
Topic
197
Abdominal anatomy
Identify the structure labelled by the arrow in the image below.

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a