Human Digestive System

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Questions and Answers

Match the following types of teeth to their quantities in permanent teeth:

Incisors = 4 per arch Canines = 2 per arch Premolars = 4 per arch Molars = 6 per arch

Match the following types of teeth to their quantities in deciduous teeth:

Incisors = 4 per arch Canines = 2 per arch Molars = 4 per arch Premolars = 0 per arch

Match the following salivary glands to their locations:

Parotid = On the side of the face Submandibular = Beneath the lower jaw Sublingual = Inferior to the tongue Epiglottis = Controls the traffic of air and food

Match the parts of the pharynx to their respective locations:

<p>Nasopharynx = Upper part Oropharynx = Middle part Hypopharynx = Lower part Epiglottis = Controls the traffic of air and food</p> Signup and view all the answers

Match the following regions of the stomach to their descriptions:

<p>Cardia = Where oesophagus enters the stomach Fundus = Superior, dilated portion below left dome of diaphragm Body = Largest section Pylorus = Opens to the duodenum</p> Signup and view all the answers

Match the parts of the pharynx to their descriptions:

<p>Nasopharynx = Upper part Oropharynx = Middle part, connects to the mouth Hypopharynx = Lower part Epiglottis = Controls the traffic of air and food</p> Signup and view all the answers

Match the following parts of the digestive system to their descriptions:

<p>Esophagus = Muscular tube approximately 25cm in length Rugae = Longitudinal folds in the stomach Greater and lesser curvatures = Borders of the stomach Fundus = Superior, dilated portion below diaphragm</p> Signup and view all the answers

Match the following salivary glands with their names:

<p>On the side of the face = Parotid Beneath the lower jaw = Submandibular Inferior to the tongue = Sublingual Controls traffic of air and food = Epiglottis</p> Signup and view all the answers

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Study Notes

Digestive System

Mouth

  • The teeth are arranged in 2 arches: superior and inferior
  • Deciduous teeth: 20 teeth, each arch consists of 10: 4 incisors, 2 canines, and 4 molars
  • Permanent teeth: 32 teeth, each arch consists of 16: 4 incisors, 2 canines, 4 premolars, and 6 molars

Salivary Glands

  • 3 pairs of salivary glands: parotid, submandibular, and sublingual
  • Parotid glands: located on the side of the face
  • Submandibular glands: located beneath the lower jaw
  • Sublingual glands: located inferior to the tongue

Pharynx

  • Divided into three parts: nasopharynx, oropharynx, and hypopharynx
  • Nasopharynx: upper part of the pharynx
  • Oropharynx: middle part of the pharynx, connects to the mouth
  • Hypopharynx: lower part of the pharynx
  • Epiglottis: controls the flow of air and food

Esophagus

  • Muscular tube, approximately 25cm in length
  • Extends from the pharynx to the stomach, passing through an opening in the diaphragm

Stomach

  • J-shaped, expanded bag, located just left of the midline
  • Divided into four regions: cardia, fundus, body, and pylorus
  • Cardia: where the esophagus enters the stomach
  • Fundus: superior, dilated portion below the left dome of the diaphragm
  • Body: largest section of the stomach
  • Pylorus: opens to the duodenum
  • Inner surface: contracted into numerous longitudinal folds called rugae

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