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the organ of smell and entrance to the respiratory tract, only visible part


nostrils, Openings through the nose carrying air into the nasal cavities

Nasal Cavity

the cavity behind the nose and above the roof of the mouth that filters air and moves mucous and inhaled contaminants outward and away form the lungs.


separates the oral and nasal cavity

Hard Palate

above, supporting the palate

Soft Palate

unsupported superior part


the passage to the stomach and lungs



Thyroid Cartilage



protects the superior opening of the larynx

True Vocal Cords

"vocal folds" allows us to speak, vibrate


slit-like opening to the larynx


membranous tube with cartilaginous rings that conveys inhaled air from the larynx to the bronchi

Hyaline Cartilage

walls of the trachea


either of two saclike respiratory organs in the chest of vertebrates, largest organ in the respiratory system


narrow, superior part of the lungs


broad lung area resting on the diaphragm

Alimentary canal(GI tract)

Consists of mouth, pharynx, esophagus, stomach, small intestine, large intestine. Collectively, breaks down food to simple molecules and absorbs these molecules into the bloodstream

Accessory digestive organs

Teeth, Tongue, Salivary Glands, Liver, Gallbladder, and Pancreas

Mouth/oral cavity

a mucosa lined cavity whose boundaries are the lips anteriorly, the cheeks laterally, the palate superiorly, and the tongue inferiorly


a small pendant fleshy lobe at the back of the soft palate

Lingual Frenulum

Fold of mucous membrane that connects the tongue to the floor of the mouth


the passage between the pharynx and the stomach


an enlarged and muscular saclike organ of the alimentary canal

Cardioesophageal sphincter

muscular opening between the esophagus and stomach

Pyloric sphincter

the sphincter muscle of the pylorus that separates the stomach from the duodenum


Ridges on the hard palate and the wall of the stomach

Greater Omentum

part of the peritoneum attached to the stomach and to the colon and covering the intestines

Small Intestine

duodenum 25cm, jejunum 1.4, ileum 3.5 m

Illeocecal valve

prevents food from moving back into the small intestine once it has entered the large intestine

Large Intestine

the last section of the digestive system, where water is absorbed from food and the remaining material is eliminated from the body, the last section of the digestive system, where water is absorbed from food and the remaining material is eliminated from the body

Veriform Appendix

wormlike projection of lymphatic tissue hanging off the cecum with no digestive function; may help resist infection (vermi = worm)


excretory opening at the end of the alimentary canal


chew (food)

Deciduous teeth

baby teeth(20)

Permanent teeth

the 32 teeth of the adult which are designed to last a lifetime.

Salivary glands

three pairs of exocrine glands in the mouth that secrete saliva; the parotid, submandibular (submaxillary), and sublingual glands


a large elongated exocrine gland located behind the stomach


large and complicated reddish-brown glandular organ located in the upper right portion of the abdominal cavity

Falciform ligament

a ligament that attaches part of the liver to the diaphragm and the abdominal wall


a digestive juice secreted by the liver and stored in the gallbladder

Common hepatic duct

joins the cystic duct (goes to gallbladder) to form common bile duct


a muscular sac attached to the liver that secretes bile and stores it until needed for digestion

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