Colon, Rectum, Anus Flashcards
Inflammation of the gall bladder
Cholescystisis
Gut Development
-primordial gut carries with it the vascular pedicle
Foregut: stomach to middle duodenum, celiac trunk (pain localizes at the epigastric region)
Midgut: middle duodenum to transverse colon, superior mesenteric artery (pain localizes at the periumbilical region)
Hindgut: rectum and snus, inferior mesenteric artery (pain localizes at the hypogastric region)
Distension of the colon
Sends signals to defecate
Irritable bowel syndrome
Exaggerated gastrocoluc response
People feels bloated always
Large bowel gas
400-1200 ml of gas normally expelled daily as flatus
Composition:
CO2
Methane
Nitrogen
Taenia coli
There are 3 (free, omentum, mesenteric) wrapped around the colon
Mas maiksi kaysa sa length of the colon
Will lead you to the appendix
Colon that is derived from the midgut
Thin-walled but a larger lumen
Midgut
Patient with left colon cancer (distal part is smaller, widest part is the cecum)
Presents with constipation (obstructive, may bara)
Patients with right-sided colon cancer
Patient presents with chronic diarrhea
Kung pumutok ang colon, saan siya puputok?
Kung saan malaki ang diameter (right side colon)
Retroperitoneal (plastered sa posterior abdominal wall)
Ascending and descending colon
Clinical implication?
Intraperitoneal
Transverse and sigmoid (mobile)
Implication: probe to twisting - sigmoid
Kapag pumutok because of diverticulitis, kakalat ang fecal matter sa cavity
Vs
Retroperitoneal: pwedeng i-drain distally
Volvulus
Twisting of the colon (sigmoid)
Wala ng taenia coli
Indicator na nasa rectum na
White Line of Toldt
Avascular plane
Diverticulosis
Presence of many diverticula (abnormal out-pouching of a hollow organ)
Implication: bleeding, puputok
Ileocecal valve
Not a real valve
Invagination of the ileum to the cecum
Accdg to textbook, common location of appendix
Retrocecal
Good morning appendix : nakikita agad
Function of appendix
Gut-associated lymphoid tissue
McBurney’s point
Not always the location of the appendix
Rather, point of maximal tenderness
Appendicitis
Obstruction of the lumen of the appendix
Ileocolic artery
-almost always present
Continuation of the superior mesenteric artery
Pwedeng walang right colic
Meandering mesenteric artery
Arc of Riolan
Kahit putulin, may blood supply pa rin
If may tumor sa right colon, remove the whole right colon (Hemicolectomy)
To cure the patient
something with lymphatic drainage
Rectum
12-15 cms in length
Valves of Houston
Not real valves, just foldings of rectal wall
Condylomas
Anal warts
