snave007: Congrats bro,we'll meet @ school

gratitude sir, are u in uniben?

Ubechu1: Thats kul, am xo happy 4 u what did u score in Jamb nd Putme for uniben and ur state of origin

jamb;215 , put me;68. and am from Edo

Dr.'Hesjay:
Hmmm.....I've been on this thread right from the start,but as a BMS student...My only wish was to b a Medic...God has done it..
Wrote JAMB this year,and my 2nd choice skul(Unilorin) Has admitted me for MBBS,..m so happy..
I am expecting my first choice skl(UI) to release cutoff next week,i pray it favors me...Cos i chose dentistry there and its dentistry that i actually want!...
Either of the 2,i know i am now a medical student....I'm happy!!!!!!!

please what's your average score @ unilorin

I'v bin followin dis thread 4 a wile now. I am a med n surg student..in university of calabar,200 lvl.

michy99: I'v bin followin dis thread 4 a wile now. I am a med n surg student..in university of calabar,200 lvl.

happy to have you here ma'am, looking forward to learning from you.

michy99: I'v bin followin dis thread 4 a wile now. I am a med n surg student..in university of calabar,200 lvl.

hey wlcum, does calabar accept second choice medical student?.

Dr.'Hesjay:
Hmmm.....I've been on this thread right from the start,but as a BMS student...My only wish was to b a Medic...God has done it..
Wrote JAMB this year,and my 2nd choice skul(Unilorin) Has admitted me for MBBS,..m so happy..
I am expecting my first choice skl(UI) to release cutoff next week,i pray it favors me...Cos i chose dentistry there and its dentistry that i actually want!...
Either of the 2,i know i am now a medical student....I'm happy!!!!!!!

whats did u score in Jamb and Unilorin Putme & and where are u 4rm?

I dont fink dey accept 2nd choice. M nt rily sure sha

michy99: I dont fink dey accept 2nd choice. M nt rily sure sha

tnx

michy99: I'v bin followin dis thread 4 a wile now. I am a med n surg student..in university of calabar,200 lvl.

Hey Michy. Welcome

Dr.'Hesjay:
HAAHAHAH...boss chill.....No0 biochem course in 100lvl...Its d normal sciencse courses...\
since its u.i,...Physics,Chemistry,Zoology and GES is what u'll do.

good to here dat bro,dat means it wll b so easy 4 me to cross to mbbs,because dat ma major aim 4 chosn biochem in d first place

Mikebis: good to here dat bro,dat means it wll b so easy 4 me to cross to mbbs,because dat ma major aim 4 chosn biochem in d first place

Did u just say easy?
Not that i wanna scare u but u wnt be d only one who wants to cross.
There is stiff competition. Its up to u to prepare hard. And i trust u naa..sebi na u

Pls guys, what causes the anti-peristaltic movement prior to
vomiting in the gut? Don't say ask googlr cos google has failed me!

Thanks in advance!

michy99: I'v bin followin dis thread 4 a wile now. I am a med n surg student..in university of calabar,200 lvl.

welcome. . . Do UNICAL write exam on direct entry?

saheaven: Brothers, i have to do medicine. Even if it means rewritting JAMB next year....though i've been admitted into Nursing this year @OAU...but i was informed it wil be difficult for one to cross...i do always think nursing is exclusively for ladies

na na. . . Its not exclusively for ladies. It is just the Nigerian-sex syndrome.

dapsondou:

Did u just say easy?
Not that i wanna scare u but u wnt be d only one who wants to cross.
There is stiff competition. Its up to u to prepare hard. And i trust u naa..sebi na u

hahaha..no b me na GOD O,i jst in destiny nd GOD desire or plan,if its ma destiny nd also PART OF GOD PLAN 4 me,no mata hw dfficult it is,i wll mk it

alutacontinua: Pls guys, what causes the anti-peristaltic movement prior to
vomiting in the gut? Don't say ask googlr cos google has failed me!

Thanks in advance!

ifa app can neva fail. I av an ifa wu neva fail.

cimetidine: ifa app can neva fail. I av an ifa wu neva fail.

Introduce urself first, bushmeat!
Which med skul are u from
What level
Thanks!

cimetidine: ifa app can neva fail. I av an ifa wu neva fail.

here resemble joke section?

alutacontinua:

Introduce urself first, bushmeat!
Which med skul are u from
What level
Thanks!

GO AND SIN NO MORE!!!

topsonkay: here resemble joke section?

lol, nah. It z identical ni.

alutacontinua: Pls guys, what causes the anti-peristaltic movement prior to
vomiting in the gut?

• Parasympathetic efferent outflow from vomitting centre in chemotrigger zone (in medulla oblongata) to duodenal smooth muscle causes the anti-peristaltic motion.

• Funny enough, it occurs only in the duodenum.

• The movement of the vomitus through the stomach and oesophagus via the pylorus and lower oesophageal sphincter does not depend on anti-peristaltic motion. Rather it's via
1) sphincter relaxation;
2) diaphragm movements;
3) involuntary contraction of abdominal musculature.

cimetidine: for ur info, all saints university college of medicine, dominica. Nd what of u? Aburos

kai, dont be cheeky! Na the biggest mama be dat. And btw, aint you a law aspirant?

lomaxx:


• Parasympathetic efferent outflow from vomitting centre in chemotrigger zone (in medulla oblongata) to duodenal smooth muscle causes the anti-peristaltic motion.

• Funny enough, it occurs only in the duodenum.

• The movement of the vomitus through the stomach and oesophagus via the pylorus and lower oesophageal sphincter does not depend on anti-peristaltic motion. Rather it's via
1) sphincter relaxation;
2) diaphragm movements;
3) involuntary contraction of abdominal musculature.

Hmmmmmm......i thought so too until i realised that (i). The chemoreceptor trigger zone is not even the vomiting center. They're two different sites in the brain.

(ii). The vomiting center sends out information through various nerves. I'm thinking the anti-peristaltic motion should be through vagus nerve. Peristalsis is also through the vagus nerve.....Now, what EXACTLY differentiates the peristalsis from anti-peristalsis? Is it the fact that the stimulus now originates from the vomiting center rather than nucleus ambiguus

THANKS IN ADVANCE! Got a presentation on that stuff and if I don't get my stuffs straight, our consultant is gonna finish me on the spot!

cimetidine: lol, nah. It z identical ni.

Get out of here, u dis boy!
Like right now!

CIMETIDINE, U GOT A MAIL!

alutacontinua:

Hmmmmmm......i thought so too until i realised that (i). The chemoreceptor trigger zone is not even the vomiting center. They're two different sites in the brain.

Yeah. I apologize for that mix-up( CTZ and vomiting centres).

CTZ is in floor of 4th ventricle while vomiting centres are in reticular formation- both in medulla oblongata.

But the basic idea still presides : that the vomiting centres send parasympathetic efferents to duodenal smooth musculature as part of the emetic reflex.

(ii). The vomiting center sends out information through various nerves.

Exactly. It sends:
1) Parasympathetic outflow to abdominal viscera( of which duodenum is among) via the vagus
2) Sympathetic outflow
3) Motor outflow via phrenic nerve to diaphragm

Remember I told you the anti-peristaltic component of the vomitting reflex is mediated by the parasympathetic outflow from vomitting centres. The other components that bring out the vomitus from the gut to the mouth is through relaxation of sphincters (due to parasympathetic outflow too) and diaphragm movements(due to phrenic nerve)

I'm thinking the anti-peristaltic motion should be through vagus nerve.

Vagus = Parasympathetic. QED

Peristalsis is also through the vagus nerve.....Now, what EXACTLY differentiates the peristalsis from anti-peristalsis?

Many differences. The anti-peristalsis associated with vomitting is not a physiological anti-peristalsis.
It is pathological.

Peristalsis involves the whole gut - from oesophagus to small intestine and to the large intestine. Anti-peristalsis, on the other hand, occurs ONLY
in the duodenum (moving vomitus from duodenum to stomach). Anti-peristalsis of vomitting does not go above or beyond the duodenum.

Is it the fact that the stimulus now originates from the vomiting center rather than nucleus ambiguus

Maybe. Vagal outflow (parasympathetic) will always stimulate GI motility- whether peristalsis or anti-peristalsis

I think cimetidine is Aluta's brother...

Maybe. Vagal outflow (parasympathetic) will always stimulate GI motility- whether peristalsis or anti-peristalsis

The sentence above is my problem. 'Maybe' is a forbidden word. what determines whether the movement should be peristaltic or antiperistaltic That is what i'm tryna figure out!

Dr.'Hesjay:
I think cimetidine is Aluta's brother...

U think
Can't u see how troublesome that boy is? Went thru his profile and

alutacontinua:

what determines whether the movement should be peristaltic or antiperistaltic
U think

Your question is: Why is GI motility antegrade(peristalsis) or retrograde(ant-peristalsis)?

Stimulus.

•Stimulus for peristalsis is food in the gut
WHILE
•Stimulus for anti-peristalsis are GI distension, mucosal irritation, psychic stimuli(fear, odour), vestibular disturbances (motion sickness)

Different stimuli will produce different response.

Using vagal input as a criteria to differentiate between peristalsis and anti-peristalsis is not sufficient. Because these processes are not controlled by neural mechanisms alone. Take away vagus nerve from the GIT, and you will still have peristalsis and anti-peristalsis.

Remember the enteric nervous system?

During my first lecture in GI physiology, Prof. Osim concluded that the complexities of the control of GI processes by the sympathetic and parasympathetic system are enormous. One of such led to the proposal of the enteric nervous system.

Why?

Sympathetic And Parasympathetic control are not sufficient to explain all.

PS: Don't be too hard on yourself. Even the consultants know we don't have all the answers.