Biology : Human Organ Systems I

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LABEL (ON DIAGRAM)	HUMAN ORGAN	DESCRIPTION
1	Nasal cavity	Larger dust particles in the inhaled air are trapped in the mucus and hair found here.
2	Oral Cavity	Food is mixed with saliva here.
3	Salivary Gland	It secretes saliva.
5	Trachea	It is a muscular tube containing semicircular rings of cartilages.
6	Bronchi	These are formed by division of trachea.
7	Lungs	Exchange of gases occurs here.
8	Heart	It pumps blood to various parts of the body.
9	Esophagus	Food descends from mouth to stomach through this muscular tube.
10	Gall Bladder	Bile is stored here.
11	Liver	Bile is secreted here.
12	Stomach	Churning of food occurs here.
13	Pancreas	It secretes pancreatic juice.
14	Large Intestine	Most of the ingested water is absorbed here.
15	Small Intestine	Absorption of food occurs here.
16	Anus	Undigested food is excreted out of the body through this opening.