Netter's High Yield Facts (Applied Anatomy) 2016-1 Flashcards
What is a disc hernia?
Protrusion of the nucleus pulposus through the annulus fibrosis, usually in the posteriolateral direction where the annulus is thinnest.
Most commonly at the L4/L5 or L5/S1 level
What is the consequence of a disc hernia?
Herniation into the vertebral canal may compress the nerve root below the disc and cause pain in the related dermatome
What does age-related deydration of the nucleus proposus do?
Contribute to loss of height and narrowing of the IV foramina
What is McBurney’s point?
A surface landmark that roughly indicates the location of the appendix, located approximately 1/3 of the way along a line from the ASIS to the umbilicus.
What is the clinical presentation of an appendicitis?
Pain first presents in the epigastric region, moves to the umbilical region and localizes in the right lower quadrant.
What is a possible complication of appendicitis?
Rupture of the appendix leads to peritonitis which presents with severe pain, fever and abdominal rigidity.
What are the 5 causes for abdominal distention?
Fat Feces Fetus Flatus Fluid
What is the most common place for an abdominal hernia?
Inguinal region
What is a direct inguinal hernia?
Protrudes through the layers of the wall in Hesselbach’s (the inguinal) triangle, MEDIAL to the epigastric vessel.
What is an indirect inguinal hernia?
Indirect inguinal hearnias leave LATERAL to the epigastric vessel, entering the inguinal canal through its deep ring.
What is the hernial sac?
Consists of peritoneum containing a portion of a viscus (small/large bowel) and is covered by the layers that cover the spermatic cord
What is a Psoas Abscess?
A result of vertebral TB infection that spreads to the psoas sheath that becomes thickened leading to pus accumulation beneath it.
Where does the pus from a Psoas Abscess go?
The pus tracks inferiorly within the sheath, deep to the inguinal ligament, surfacing in the superior part of the thigh.
Pus can also track into the adjacent iliac fascia, forming a recess in the iliacosubfascial fascia, where the large bowel can get trapped in it (painful)
What are the muscles of the abdominal wall?
Transversus abdominus
Internal oblique
Rectus abdominis
External oblique
What supplies blood to the sigmoid colon?
left colic artery
superior sigmoid artery
What is a hiatus hernia?
Herniation of part of the stomach through the esophageal hiatus of the diaphragm, predisposing reflux
What are the two types of hiatus hernias?
sliding hernias - involve the cardiac of the stomach sliding superiorly
rolling hernias - involve part of the fundus extending through the hiatus
What is an intestinal volvulus?
Rotation of a loop of bowel upon its mesentery that may cause bowel obstruction and can compromise the vascular supply leading to ischemia, infarction, and necrosis.
Which parts of the bowel are most likely to undergo intestinal volvulus?
small bowel
sigmoid colon
What are the 5 sphincters of the GI tract?
APE OIL Anus Pyloric Esophageal Oddi Ileocecal
What is choleithiasis?
gallstones that can cause pain in the RUQ if they obstruct the cystic duct after the consumption of a fatty meal
What is the frequency of pain associated with gallstones?
intermittent as the gallstone gets squeezed around but constant pain may be as a result to secondary inflammation
What is a way that the spleen can be injured?
Splenic rupture - trauma causing rib fracture or sudden increases in intra-abdominal pressures
what is the significance of the subphrenic abscess?
Most common site for pus to accumulate, where Right sided abscesses are more common due to the high incidence of perforated appendices.
What is an abdominal aortic aneurysm?
localized enlargement of the aorta as a result of congenitla or acquired weakness of the wall, where common site is just above bifurcation of aorta to common iliac arteries
What is nephrolithiasis?
Renal stones that can be found between urinary bladder and renal calyces.
What kind of pain do you get from nephrolithiasis?
colicky pain radiating from loin to groin due to ureter contractions to try to move the stone
How are nephrolithiasis diagnosed?
CT scan
What is the treatment of nephrolithiasis?
Wait for it to pass, surgical, or lithotripsy
What is a winged scapula?
damage to the long thoracic nerve to serratus anterior causes winging of the scapula as its medial border lifts away from the thorax when arm is raised.