Human alimentary canal and the main functions of various parts are explained in the following animation.
To view the animation click the play button.
You may also press the "go interactive" button to view functions of the organ which you click.
When feces enter the rectum, distention of the rectal wall initiates afferent signals that spread through the myenteric plexus (A network of nerves between the circular and longitudinal layers of the muscular coat of the digestive tract. Also known as Auerbach's plexus) to initiate peristaltic waves in the descending colon, sigmoid, and rectum, forcing feces toward the anus. As the peristaltic wave approaches the anus, the internal anal sphincter is relaxed by inhibitory signals from the myenteric plexus. NOTE: If the external anal sphincter is also consciously, voluntarily relaxed at the same time, defecation occurs.
Acid reflux or gastroesophageal reflux disease (GERD) refers to chronic symptoms or mucosal damage produced by the abnormal reflux in the oesophagus. This can be due to incompetence of the lower esophageal sphincter. When acid flows back into the oesophagus from stomach it creates heartburn.
sir why is the lower oesophageal sphincter called a physiological sphincter rather than an anatomical sphincter.and sir what is achalasia cardia.and sir why is the irritation of oesophageal mucosa called heart burn when it has got nothing to do with heart?
sir it was very useful.we could understand digestion very well.go interactive was excellent.
ReplyDeleteexcellent
ReplyDeleteits really nice sir
ReplyDeleteits really useful to us
very well exwcuted!!!!
ReplyDeletethank u sir....so kind of u to help us
ReplyDeleteThe animation is very good.
ReplyDeleteWhat is defecation reflex?
When feces enter the rectum, distention of the rectal wall initiates afferent signals that spread through the myenteric plexus (A network of nerves between the circular and longitudinal layers of the muscular coat of the digestive tract. Also known as Auerbach's plexus) to initiate peristaltic waves in the descending colon, sigmoid, and rectum, forcing feces toward the anus. As the peristaltic wave approaches the anus, the internal anal sphincter is relaxed by inhibitory signals from the myenteric plexus.
ReplyDeleteNOTE: If the external anal sphincter is also consciously, voluntarily relaxed at the same time, defecation occurs.
Excellent animation sir!!
ReplyDeleteWhat is acid reflux sir??
Acid reflux or gastroesophageal reflux disease (GERD) refers to chronic symptoms or mucosal damage produced by the abnormal reflux in the oesophagus. This can be due to incompetence of the lower esophageal sphincter. When acid flows back into the oesophagus from stomach it creates heartburn.
ReplyDeletesir why is the lower oesophageal sphincter called a physiological sphincter rather than an anatomical sphincter.and sir what is achalasia cardia.and sir why is the irritation of oesophageal mucosa called heart burn when it has got nothing to do with heart?
ReplyDeletesir how does chyme(a liquid)turn into faeces juz by absorbing water n salts vch might also be present in a liquid form?
ReplyDeleteIn the large intestine, water and salts are absorbed and change the material in the digestive tract from a liquefied state to semisolid faeces.
ReplyDeleteI can easily ti unterstood now the digestive system we can get subject knowledge, sri thankyou
ReplyDeletesri it was very useful tous
ReplyDelete