Lower GI Flashcards
what are the three parts of the small intestine?
Duodenum
Jejunum
Ileum
DJ Ileum
majority of ______ and _______ takes place in the SI
digestion and absorption
where does the digestion of carbs start?
in the mouth, with saliva
which will affect your ability to absorb nutrients? SI or LI pathology?
SI
which valve is between SI and LI
iliosecal
inner lining of SI has _______ lined with ______ and ______ for increasing __________
crypts
villi
microvilli
increasing surface area
what part of LI is the appendix attached to?
cecum
which part of the LI comes before the rectum?
sigmoid
what does the LI mostly absorb?
water and electrolytes
how does too much salt cause diarrhea?
osmosis draws water into the LI
how does lactose cause diarrhea?
undigested lactose draws water into the LI via osmosis
how can a secretory disorder cause diarrhea?
if GB is removed, bile will drip into the SI
if no lipase is secreted, then fat will not be digested and stool will be oily
how can fast peristalsis create diarrhea?
not enough time to absorb water before it reaches LI
what is the definition of constipation?
less than 3 stools per week
what are the two main types/causes of constipation?
mechanical ileus and paralytic ileus
what is ileus?
a temporary lack of normal intestinal muscle contractions
mechanical ileus is caused by a _______
blockage
what can block up the LI?
tumor foreign body stricture fecal impaction volvulus intussusception inguinal hernia
what can cause paralytic ileus
IBS
stress
opioids
anaesthesia
what is paralytic ileus
when the peristalsis of the LI isn’t working
Are UC and chron’s examples of IBS or IBD?
IBD
who is disproportionately affected by IBD
women 20s-30s
what is the pattern associated with autoimmune diseases?
remission/exacerbation
what are s/s of ibd
diarrhea weight loss muscle twitching food avoidance bloating cramping
rash
arthritis
fever
uveitis (inflammation of the submucosa of the eyeball
