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43 terms

Respiratory and digestive system

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Nose
the organ of smell and entrance to the respiratory tract, only visible part
Nares
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.
Palate
separates the oral and nasal cavity
Hard Palate
above, supporting the palate
Soft Palate
unsupported superior part
Pharynx
the passage to the stomach and lungs
Larynx
Voice-Box
Thyroid Cartilage
Adams-Apple
Epiglottis
protects the superior opening of the larynx
True Vocal Cords
"vocal folds" allows us to speak, vibrate
Glottis
slit-like opening to the larynx
Trachea
membranous tube with cartilaginous rings that conveys inhaled air from the larynx to the bronchi
Hyaline Cartilage
walls of the trachea
Lung
either of two saclike respiratory organs in the chest of vertebrates, largest organ in the respiratory system
Apex
narrow, superior part of the lungs
Base
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
Uvula
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
Esophagus
the passage between the pharynx and the stomach
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
Rugae
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)
Anus
excretory opening at the end of the alimentary canal
Masticate
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
Pancreas
a large elongated exocrine gland located behind the stomach
Liver
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
Bile
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
Gallbladder
a muscular sac attached to the liver that secretes bile and stores it until needed for digestion