SCIENCE - Digestive & Excretory System

DIGESTIVE SYSTEM

made up of the alimentary tract and accessory organs, acquires and breaks down food

ALIMENTARY TRACK

passage way of food - composed of mouth, pharynx, esophagus, stomach, small intestine, large intestine, rectum, anus

ACCESSORY ORGANS

help in digestion but not part of GI (gastro intestinal) tract - composed of salivary glands, liver, gallbladder, pancreas

MOUTH

breaks food, mixes with saliva

PHARYNX

passageway for food from mouth to esophagus

ESOPHAGUS

tube connecting throat to stomach

STOMACH

stores and chums food; where digestion begins

SMALL INTESTINE

absorbs nutrients

LARGE INTESTINE

absorbs water, forms feces

RECTUM

temporary storage of feces

ANUS

opening for waste elimination

SALIVARY GLANDS

produce saliva for moistening and digesting food

LIVER

largest gland; produces bile, stores glycogen, filters blood

GALLBLADDER

stores bile for fat digestion

PANCREAS

produces enzymes and insulin to break down food and regulate sugar

3 Major Pairs of Salivary Glands

Parotid Glands, Submandibular glands, Sublingual glands