Chapter 21: Digestive System

CHAPTER 21

DIGESTIVE SYSTEM

When we hear DIGESTIVE SYSTEM, the first thing that comes into our mind is FOOD! Yeah, basically it's about food but how do the food travels in our digestive system? and how do they distribute their nutrients?

FUNCTION OF DIGESTIVE SYSTEM

1. Take in food

2. Break down the food

3. Absorb nutrients

4. Eliminate waste

ENTERIC NERVOUS SYSTEM

Consist of nerve plexuses within the wall of the digestive tract.

PERITONEUM

It is the serous membrane that lines the abdominopelvic cavity and organs.

ORAL CAVITY

Includes the vestibule and oral cavity proper

>LIPS AND CHEEKS

>PALATE AND PALATINE TONSILS

>TONGUE

>TEETH

>MASTICATION

>SALIVARY GLANDS

PHARYNX

Consist of the nasopharynx, oropharynx, and laryngopharynx.

ESOPHAGUS

Connects the pharynx to the stomach.

STOMACH

Large sac between the esophagus and small intestine, lying just beneath the diaphgram.

SMALL INTESTINE

divided into duodenum, jejunum, ileum

LIVER AND GALLBLADDER

>produces bile

>stores and process nutrients

>produce blood components

PANCREAS

Abdominal gland that secretes pancreatic juice into the intestine and insulin and glucagon from the pancreatic islets into the blood stream

LARGE INTESTINE

Portion of the digestive tract extending from the small intestine to anus

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