Digestive System Parts Description
Posted on April 6th, 2015 at 2:21 pm by 046942 and

Mouth

The digestive process begins at the mouth, where food is ground into pieces and prepared for delivery to the stomach.

Uvula

This small rounded muscular structure dangles from the palate. Together with the soft palate it stops food from entering the nasal cavity while swallowing.

Esophagus

The esophagus is a 10 inch long [25 centimeter long] muscular tube that connects  the pharynx to the stomach. When food enters the esophagus a wave of muscular contractions [called peristalsis] push and pull the food to the stomach.

Stomach

This muscular expandable j-shaped pouch is reasonable for holding and digesting, food as well as removing  its nutrients. When food enters the stomach it’s muscular walls contract and chum the food with powerful gastric acid that kill bacteria and break down proteins.

Liver

Weighing only 3 pounds [1.3 kilograms] this wedge shaped organ is the body’s largest gland.The liver is an accessory organs for the digestive system.

Gall Bladder

This plum size, green muscular sac hangs from the liver. The gall bladder collects, stores and concentrates bile from the liver.

Pancreas

This long organ, positioned behind the stomach, produces insulin and enzymes that aid digestion. Pancreatic enzymes help digest food in the small intestine, while insulin help regulate the amount of sugar in the blood.

Small Intestine

the small intestines measure about 20 feet [6 meters] in length and inches [2.5 centimeters] in diameter. Thousands of folds and millions of finger like projections called villi increase the surface area of the small intestines witch absorb 90% of nutrients and water the body will receive from digested food.

Large Intestine

The large intestine absorb the last bits of nutrients and water from indigestible foods, compacts remaining matter, and eliminates it as feces.

Rectum

Only 5 inches[12 centimeters] long, the rectum sits just above the anal canal. Feces are stored here briefly prior to defecation.

Anus

This ring of muscles is the external opening of the rectum through which fecal matter is expelled. Peristaltic waves in the colon and contraction of the abdominal muscles trigger defecation.

 

 

 

 

 

 

 

 

 

 



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