Anatomy (Abdomen) Flashcards
Regions of Abdomen (9)
E U P, LH LL LI, RH RL RI
- Epigastric
- Umbilical
- Pubic
- Left hypochondriac
- Left lateral (lumbar)
- Left inguinal
- Right hypochondriac
- Right lateral (lumbar)
- Right inguinal
Actions of Anterolateral Abdominal Wall Muscles (4)
1) support and compress viscera
2) flex vertebral column with bilateral contraction
3) lateral flexion of vertebral column with unilateral contraction
4) rotation of trunk when internal abdominal oblique and contralateral external abdominal oblique contract simultaneously
What disappears below the Arcuate Line?
Posterior Rectus Sheath
Broad Ligament
Parietal Peritoneum drapping pelvis in women
Functions of Peritoneum (3)
- reduces friction to facilitate free movement
- resists infection by exuding fluid and cells to fight off infection
- stores fat
Abdominopelvic Fascia Location and Names
Superficial to peritoneum
Superior - diaphragmatic fascia
Anterior - transversalis fascia
Posterior - quadratus lumborum fascia
Inferior - pelvic fascia
Location of Abdominal & Lymph Vessels, and Nerves
Inside fascial lining - blood & lymph vessels
Outside fascial lining - nerves
Superior & Inferior Epigastric Arteries Arise From Where?
Superior Epigastric - Internal thoracic artery from subclavian artery
Inferior Epigastric - External iliac artery
Ligamentum Teres Hepatis Originates From What?
Obliterated umbilical vein
Peritoneum-Covered Umbilical Folds (3)
Median (1) - Urachus
Medial (2) - Obliterated umbilical artery
Lateral (2) - Inferior epigastric artery & vein
Mesentery
- A double layer of peritoneum that is neither parietal nor visceral peritoneum
- It is a region of continuity between the visceral and parietal peritoneum
Spermatic Cord Contents (6)
- Testicular artery
- Pampinformplexus of veins (converge as the testicular veins)
- Ductus deferens (transporting sperm from the epididymus)
- Genital branch of genitofemoral nerve
- Lymphatics
- Vestige of processus vaginalis
Gubernaculum
- Guides testis into scrotum
Mnumonic For Layers To Testis
“Some Darn Englishman Called It The Testilce”
- Skin
- Dartos
- External spermatic fascia
- Cremaster muscle
- Internal spermatic fascia
- Tunica vaginalis (parietal)
- Tunica vaginalis (visceral)
Hydrocele
Excess fluid in a persistent processus vaginalis
Clinical Significance of inguinal Triangle
Common site for abdominal hernia to push into anterior abdominal wall
Direct vs. Indirect Inguinal Hernia
Direct - hernaition through local weakness in abdominal wall and only traverses the superficial inguinal ring
Indirect - herniation of the abdominal contents through the deep inguinal ring, inguinal canal, & superficial inguinal ring into the anterolateral wall and follows spermatic cord
Inguinal vs. Femoral Hernia
Inguinal - superior & medial to pubic tubericle
Femoral - inferior & lateral to pubic tubericle
Abdominal Hernia Types (4)
- Umbilical (especially in babies)
- Epigastric
- Semilunar
- Incisional
Tubular Gastrointestinal Tract (13)
Mouth, Pharynx, Esophagus, Stomach, Duodenum, Jejunum, Ileum, Ascending colon, Transverse colon, Descending colon, Sigmoid colon, Rectum, Anus
Accessory Organs of Digestive System
- Salivary glands
- Liver
- Gallbladder
- Pancreas
Bare Area of Liver
- Not covered by peritoneum
- Common area for infection spreading
Spleen (3)
- Recylcles old red bloof cells
- Suscepitble to damage by blow to left abdomen
- If it ruptures there will be lots of bleeding
Hiatal Hernia
- Cardiac portion of stomach moves into the thorax via esophageal hiatus in diaphragm
Peptic Ulcers
- Breach in mucosal lining due to stomach acid
Gastric Carcinoma
- Malignant cells in lining of stomach lining
Gall Stones
- Concretions of bile in gallbladder
Biliary Tree
- System of ducts that drain the bile produced by the liver to the to the gallbladder for storage and to the duodenum to enter the digestive tract
Surface Area in Small Intestine
- More in Jejunum and less in Ileum
- More nutrients avaliable in food in first part of small intestine compared to last
Formation & Purpose of Haustra
Formation - bunched up portions of colon due to shorter Taeniae Coli causing it to gather
Purpose - increases surface area to maximize water absorbtion from feces
Portacaval Anastamoses
- Sites that allows venous drainage back to inferior vena cava and hepatic portal
- Occurs when blood return through liver becomes obstructed