In this article we will discuss about the structure of small intestine with the help of suitable diagrams. From outside inwards, the arrangement of the layers is same, i.e., the serous coat, the muscular coat, composed of outer longitudinal and inner circular, the submucous coat the layer of muscularis mucosae consisting of outer longitudinal and inner circular layers and lastly [...]
In this article we will discuss about the movements and functions of large intestine of human body. Movements of Large Intestine: The colon receives mixed residues of food which have escaped digestion and absorption in the stomach and small intestine, i.e., undigested or indigestible food residues, whatever remains of digestive juices including large amount of H2O and the fluid that [...]
Deglutition or swallowing is probably a reflex phenomenon. Higher centres facilitate this reflex. Once aroused, the swallowing centre in the medulla evokes the complete act of swallowing by discharge through six nuclei and the motor neurones. This reflex act occurs in three stages: (1) First or oral, (2) Second or pharyngeal, and (3) Third or oesophageal (Fig. 9.46). (1) First [...]