case 2 anatomy Flashcards
(34 cards)
Which tubercles do intertubercular plane pass through?
Iliac tubercles
Which structures are found at the level of transpyloric plane?
Pylorus of stomach, fundus of gallbladder, neck of pancreas, hila of kidneys, transverse mesocolon, duodenojejunal junction
Which abdominal structures are found in the right upper quadrant?
Right lobe of Liver, gallbladder, Pylorus, duodenum, head of pancreas, right kidney and suprarenal gland, distal ascending colon, right half of transverse colon
Which abdominal structures are found in the left upper quadrant?
Left lobe of liver, spleen, stomach, jejunum and proximal ileum, pancreas, left kidney and suprarenal gland, left half of transverse colon, superior part of descending colon
Which abdominal structures are found in the right lower quadrant?
Ileum, caecum, appendix, proximal ascending colon, right ureter
Which abdominal structures are found in the left lower quadrant?
Distal descending colon, sigmoid colon, left ureter
Which direction lines of cleavage (Langer’s lines) run on the abdominal wall?
In the same direction as the collagen fibres in the dermis, represent the direction in which skin has least flexibility. Surgical cut is done along the line for better healing and less scarring.
Name the superficial fatty layer in the superficial fascia of anterior abdominal wall
Camper’s layer
Name the inner membranous layer in the superficial fascia of anterior abdominal wall
Scarpa’s layer
What direction do the fibres of external oblique run in?
Inferomedially
What is origin of external oblique?
External surfaces of ribs 5-12
What is insertion of external oblique?
Linea alba, pubic tubercle, anterior half of iliac crest
What is innervation of external oblique?
Thoracoabdominal nerves (t7-t11) & sub costal nerve
What is action of external oblique?
Compresses the abdomen by pulling down the chest, flex trunk, rotate trunk to OPPOSITE side
What direction do the fibres of internal oblique run in?
Superomedially
What is the origin of internal oblique?
Thoracolumbar fascia, anterior 2/3 of iliac crest, connective tissue deep to lateral 1/3 of inguinal ligament
What is the insertion of internal oblique?
Inferior borders of ribs 10-12, linea alba, pectin pubis via conjoint tendon
What is the innervation of internal oblique?
Thoracoabdominal nerves (anterior rami of T7-T12) & L1
What is the action of internal oblique?
Compresses & supports abdominal viscera (antagonising diaphragm), flexes & rotates trunk to SAME side
What is the origin of transversus abdominis?
Internal surfaces of 7th-12th costal cartilages, thoracolumbar fascia, iliac crest, connective tissue deep to lateral 1/3 of inguinal ligament
What is the insertion of transversus abdominis?
Linea alba with aponeurosis of internal oblique, pubic crest, pectin pubis via conjoint tendon
What is the innervation of transversus abdominis?
Thoracoabdominal nerves (anterior rami of T7-T12) & L1
What is the action of transversus abdominis?
Compresses & supports abdominal viscera (antagonising diaphragm)
What is the origin of rectus abdominis?
Pubic symphasis, pubic crest
