Lab 8: Anterior Abdominal Wall and Foregut Flashcards
Name and describe muscles of ant abd wall
Ext oblique and aponeurosis
Int oblique and aponeurosis
Transversus abd and aponeurosis
Rectus abdominis
Describe rectus abdominis
Vertcle
Abs = tendinous intersections
Describe fascia to know for ant abd wall
Superficial fascia = campers fatty layer
Transversalis fascia
What do tendons form
Rectus sheath - encompass rectus abdominis
What is arcuate line
Between umbilicus (umbilical level t10) and pelvic inlet
Transition, everything on top and rectus abdominis below
Describe above arcuate line
Makes rectus sheath
Ext oblique, 1/2 int
Rectus
1/2 int, transversus abdominus
Transversalis fascia
Describe below arcuate line
Ext, int, transversus, rectus, transversalis fascia
Name nv of ant abd wall
Thoracoabdominal nerves = t7-t12 - last = subcostal, Cont of intercostal nerves
Iliohypogastric nerves - l1
Epigastric (sup and inf) and musculophrenic arteries
Where does superior and inferior epigastric arteries come from
Sup = int thoracic a, each side of sternum, terminal branch
Inf = from ext iliac
ANASTOMOSE with each other
What is inguinal canal
Allows passage of structures
Describe inguinal ligament
Inferior thickening of ext oblique
What makes roof inguinal canal
Transversus abdominus and internal oblique
What makes floor inguinal canal
Inguinal ligament
What makes ant wall inguinal canal
Aponeurosis ext oblique
What makes up posterior wall inguinal canal
Transversalis fascia
What makes superior inguinal ring
Ant wall = Aponeurosis ext oblique
What makes deep inguinal ring
Post wall = Transversalis fascia
Describe peritoneum
Serous double membrane layer
Connects organs to each other/wall
Visceral = around organs
Parietal = outer wall, next to trasnversalis fascia
Describe intra vs retro
Intra = suspended in visceral peritoneum
Retro = outside peritoneal cavity, stuck to parietal
What is mesentery
A reflection, double fold, turns into visceral peritoneum
Has diff names depending on area
Name mesenteries
Si = mesentery
Transverse colon = transverse mesocolon
Sigmoid colon = sigmoid mesocolon
Describe lesser omentum
Lesser curvature stomach to liver
Hepatoduodenal lig (thicker) and hepatogastric lig
Describe greater omentum
Like sac, greater curvature stomach
Wraps and insets on trasnverse colon
Describe lesser and greater omental sacs
Omenta divide abdomen into 2 sacs =
Lesser - behind liver and stomach
Greater = everything else
What supplies foregut
Celiac trunk
Describe abd eso
Diaphragm to stomach = down through esophageal hiatus + 2 vagal trunks
Describe stomach - all features
Opening = cardia
Fundus = top
Pyloric Antrum = bottom
Pyloric canal
Pyloric sphincter = pyloric orifice, open to duo
Greater and lesser curvature
Rugae
Describe duo - Gen
Continuous with stomach
D1,d2 = foregut
D3,d4 =midgut
Describe D1 duo
Most sup
Connected to pyloric region stomach and liver
Intraperitoneal
Describe D2 duo
Descending part = 2 openings
Major (bile and main pancreatic duct) = minor (accessory pancreatic duct)
Describe D4 duo
Ascending part
Describe pancreas - Gen
Head, neck, uncinate, body, tail
Exocrine - secretions
Endocrine = insulin and glucagon
Describe features of pancreas - specifics
Head in c shape of duo
Tail = intra, needs to move
Rest = retro
Main duct = drain into major papilla with bile duct
Accessory duct = minor duo papilla
Describe spleen
Not gi,
Ant borders = notched
Hilum = on medial surface
Retro
Filters blood, lymphatic function
Splenorenal ligament
Describe gallbladder
Fundus, body, neck (continuous with cystic duct)
Visceral, surface liver, stores bile and brings to bile duct
Describe biliary tree
Right hepatic duct + left hepatic duct —> common hepatic duct
Gallbladder —> cystic duct
Cystic duct + common hepatic —> common bile duct
Empty into duodenal papilla - at hepatopancreatic ampulla
Describe liver - Gen
Detox blood, produce bile, stores vit and minerals
Intraperitoneal
Sup = top, diaphragmatic surface
Bare area = no peritoneum covering (4 legged do not have)
Describe suspensory system for liver
Sup = coronary ligament, ant and post - when meet= make triangular ligament
Ant = falciform ligament - becomes ligament teres
Hepatoduodenal ligament reinforces too
Name the 4 lobes of liver and describe kinda
Right and left = divided by Sagittarius fissures and ligament teres
On visceral surface = caudate lobe (tail), quadrate lobe (square)
Describe impressions of liver
Gallbladder, eso, gastric, ivc
Hepatic veins
Describe portal vein liver
Blood into portal vein then send to ivc then back to heart
Describe portal triad
Hepatic duct
Portal vein
Hepatic artery proper
Do lobes of liver move
Liver moves and accommodates for diaphragm when breathe
Porta hepatis does not move - central part
