Abdominal Anatomy

true

ribs which attach directly to the sternum

false

ribs which do not attach to the sternum

floating

ribs which are only attached to the vertebrae and not to the sternum or superior costal cartilage

11-12

What number are the floating ribs?

Ilium

the uppermost and largest bone of the pelvis

Iliac crest

The superior border of the uppermost and largest bone in the pelvis

anterior superior iliac spine

the bony projections on the largest bone in the pelvis which serves as important landmarks for anatomical structures

Pubis

ventral and anterior bone of the pelvis

divisible into the body, superior and inferior ramus

Pubic crest

The medial end of the pubis bone which affords attachments to the abd external oblique muscles

Pubic tubercle

Prominent hole on the superior ramus of the pubis bone

The inferior attachment of the inguinal ligament

Landmark for inguinal and femoral hernias

Transversus abdominis

Deepest muscle of the anterolateral abdominal body wall

Pressurizes abdomen

Function of transversus abdominis

Ventral rami T7-12

Innervation of transversus abdominis

Costal margin, thoracolumbar fascia, iliac crest, inguinal ligament

Origins of transversus abdominis

Linea alba, pubic crest

Insertion of transversus abdominis