Question

1. Name different sections of small and large intestines. Describe.

Answer 1

Ans:

Small intestine has three sections –

Duodenum: Food mix with bile from gallbladder and digestive juices from the pancreas.

Jejunum: Absorption of nutrients like sugars, fatty acids, and amino acids. Peristalsis moves nutrients through digestive system.

Ileum: Absorb bile salts,vitamin B12 and leftover products of jejunum.

Large intestine has following sections –

Ascending colon: Absorb remaining water and other nutrients from indigestible material and solidifying it to stool.

Transverse colon: It moves waste material to rectum through peristalsis and churning. Absorb water and electrolytes.

Descending colon: Store remains of digested food which is emptied into the rectum.

Sigmoid colon: Terminal section, connects descending colon to rectum; store fecal waste until ready to leave.

Rectum: Temporary storage site for fecal matter.