GA Lab #1 Anterior Abdominal Wall, Inguinal Region, Peritoneum (edited LS) Flashcards
Name the abdominal layers and what they become in spermatic cord?
- Scarpas or Campers Fascia = Dartos Fascia
- External Oblique = External Spermatic Fascia
- Internal Oblique = Cremasteric Muscle and Fascia
- Transversus Fascia = Internal Spermatic Fascia
- Peritoneum = Obliterated Processus Vaginalis
- Peritoneum = Tunica Vaginalis (parietal and visceral)
Name the superficial arteries going to the anterior abdominal wall. Superficial and deep:
Superficial (M-C-E) 1. Musculophrenic artery (off Internal Thoracic artery) 2. Superficial Circumflex Iliac Artery 3. Superficial Epigastric Artery Deep (I-C-E-E): intercostal-circmflx-epi-epi 1. Superior Epigastric Artery (off Internal Thoracic) 2. Inferior Epigastric Artery 3. Deep Circumflex artery 4. Intercostal arteries
What is the Roof part of the Inguinal canal?
M = Muscles Internal Oblique Transversus abdominis
What is the anterior part of the Inguinal Canal?
A= Aponeuroses of external and intenral oblique
What is the floor of the Inguinal canal?
L = Ligament Inguinal Ligament = extension of the external oblique aponeurosis, spanning to pubic tubercle
What is the posterior part of the Inguinal canal?
T = Tendon Transversalis Fascia, reinforced by Conjoint Tendon Conjoint Tendon = formed from tendinuous insertions of the medial most parts of the internal oblique and transversus abdominis
what is the function of external oblique?
-compress abdomen -flex trunk -forced expiration -bend trunk to same side, turning anterior part of abdomen to opposite side
what is function of internal oblique
compress abdomen flex trunk forced expiration -bends trunk to same side, turning the anterior part of abdomen to opposite side
what is function of transversalis abdominis
compress abomden
function of rectus muscle?
compress abdomen flex vertebral column tense abdominal wall
function of pyrimidalis
tenses linea alba
origin and insertion of external oblique what ligament does it form?
origin: Rib 5-ribs 12 inserts at the lateral lip of Iliac crest. Forms the large aponeurosis ending at linea alba -inferior border forms Inguinal Ligament
origin and insertion of Internal oblique? what ligament does it form
Thoracolumnar Fascia + Iliac Crest Aponeurosis helps make the Conjoint Tendon
origin and insertion of Transversus abdominis what ligament does it form? what else does it help form?
Thoracolumbar Fascia + Iliac Crest Aponeurosis ends at Linea Alba Fibers run more horizontal Helps form conjoint tendon Forms posterior wall of Inguinal canal
origin and insertion of Rectus abdominis?
Originates at Pubic Crest Inserts at Costal Cartilage/Xiphoid