Exam 4: Anterior Abdominal Wall Flashcards
Middle upper quadrant
Epigastric
Right Upper Quadrant
R. Hypochondriac
Left upper quadrant
L. Hypochondriac
Right middle quadrant
R. Lumbar
Middle middle quadrant
Umbilical
Left middle quadrant
L. Lumbar
Right lower quadrant
R. Iliac
Lower middle quadrant
Hypogastric
Left lower quadrant
L. Iliac
Umbilicus
Level L3-L4, innervation T10
Lines Alba
Palpable vertical facial line in center of abdominal region
Inguinal Ligament
tight fusion of fascial layers, forming a shelf in which the spermatic cord (round ligament) rests
Pelvic Landmarks
Iliac crest, Anterior superior iliac spine, Pectin pubis (pectineal line), Pubic tubercle
Anterior abdominal cavity spans from
Costal arch coming from ribs 60-10 and Xyphoid process to
Illiac crest and inguinal ligament (ASIS to pubic tubercle)
Functions of Abdominal Wall
Protection and stabilization of abdominal contents
Trunk rotation and flexion
Maintain and control intra-abdominal pressure
Respiration - opposes diaphragm during exhalation
Camper’s fascia
superficial fascia under skin
Adipose (fatty) layer coursin with cutaneous nerves and blood vessels
Scarpa’s fascia
Membranous fascial layer deep to Camper’s fascia
Scarpa’s fascia become what in the scrotum?
Dartos fascia
Scarpa’s fascia becomes what in the perineum
Colles’ fascia
External Oblique
O: External surfaces of ribs 5-12
I: Linea alba, pubic tubercle, and anterior half of iliac crest
A: Compress and support abdominal viscera; flex and rotate trunk
I: Thoraco-abdominal nerves (anterior rami of T7-11) and subcostal nerves
Internal oblique
O: Thoracolumbar fascia, anterior 2/3 of Iliac crest, and connective tissue deep to inguinal ligament
I: Inferior borders of ribs 10-12, linea alba, and pubis via conjoin tendon
A: compress and support abdominal viscera; flex and rotate trunk
I: Thoraco-abdominal nerves (anterior rami of T7-11) and first lumbar nerve (L1)
Rectus abdominus
O: Pubic symphysis and pubic crest
I: Xiphoid process and costal cartilages 5-7
A: Flexes trunk (lumbar vertebrae) and compresses abdominal viscera; stabilizes and controls pelvic tilt
I: Thoraco-abdominal nerves (anterior rami of inferior 6 thoracic nerves)