Classification of Salivary Glands
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Questions and Answers

Which part of the oral cavity contains lingual minor salivary glands?

  • Lingual (correct)
  • Labial
  • Buccal
  • Palatal

    • Where do minor salivary glands open into?

  • The bone marrow
  • The blood vessels
  • The lymphatic system
  • The mucosal surface (correct)

    • Which minor salivary glands are located in the submucosal layer?

  • Labial
  • Lingual
  • Palatal
  • All of the above (correct)

    • Which of the following is NOT a location for minor salivary glands?

    <p>Alveolar</p> Signup and view all the answers

    Which minor salivary glands are located near the teeth?

    <p>Retromolar</p> Signup and view all the answers

    What is one of the classifications of salivary glands based on size and location?

    <p>Major salivary glands</p> Signup and view all the answers

    What is another classification of salivary glands based on size and location?

    <p>Minor salivary glands</p> Signup and view all the answers

    Salivary glands based on size and location are grouped into how many categories?

    <p>Two</p> Signup and view all the answers

    Which term refers to salivary glands classified by their smaller size?

    <p>Minor salivary glands</p> Signup and view all the answers

    The classification of salivary glands into major and minor categories is based on what criteria?

    <p>Size and location</p> Signup and view all the answers

    Which salivary gland is located outside the oral cavity?

    <p>Parotid gland</p> Signup and view all the answers

    How do the secretions of the major salivary glands reach the mouth?

    <p>Through a ductal system</p> Signup and view all the answers

    Which of the following is NOT one of the three major salivary glands?

    <p>Thyroid gland</p> Signup and view all the answers

    Which gland is NOT involved in the major salivary secretion process?

    <p>Parathyroid gland</p> Signup and view all the answers

    Which of the following glands are part of the major salivary glands?

    <p>Submandibular gland</p> Signup and view all the answers

    Which gland is also known as the submaxillary salivary gland?

    <p>Submandibular gland</p> Signup and view all the answers

    Which part of the submandibular gland fills the digastric triangle?

    <p>Superficial part</p> Signup and view all the answers

    Where is the deep part of the submandibular gland located?

    <p>Deep to mylohyoid and superficial to hyoglossus and styloglossus</p> Signup and view all the answers

    What is the name of the duct that connects the submandibular gland to the floor of the mouth?

    <p>Wharton duct</p> Signup and view all the answers

    Which structure is not identified in the diagram of the submandibular gland?

    <p>Hyoglossus muscle</p> Signup and view all the answers

    What is the smallest of the major salivary glands?

    <p>Sublingual gland</p> Signup and view all the answers

    Where is the sublingual gland located?

    <p>Below the mucosa and above the mylohyoid muscle</p> Signup and view all the answers

    Which gland is shown alongside the sublingual gland in the diagram?

    <p>Submandibular gland</p> Signup and view all the answers

    Which muscle is located below the sublingual gland?

    <p>Mylohyoid muscle</p> Signup and view all the answers

    Which gland is NOT a major salivary gland?

    <p>Lacrimal gland</p> Signup and view all the answers

    What is the largest gland in the body?

    <p>Liver</p> Signup and view all the answers

    Where is the greater part of the liver situated?

    <p>Under the right costal margin</p> Signup and view all the answers

    What separates the liver from the pleura, lungs, pericardium, and heart?

    <p>Right hemidiaphragm</p> Signup and view all the answers

    Which side of the body does the liver extend to?

    <p>Left</p> Signup and view all the answers

    What structure covers the greater part of the liver?

    <p>Right costal margin</p> Signup and view all the answers

    Which surface of the liver faces in the anterior direction?

    <p>Diaphragmatic surface</p> Signup and view all the answers

    Which surface of the liver faces in the inferior direction?

    <p>Visceral surface</p> Signup and view all the answers

    In which direction does the diaphragmatic surface of the liver NOT face?

    <p>Inferior</p> Signup and view all the answers

    Which surface of the liver is associated with the diaphragm?

    <p>Diaphragmatic surface</p> Signup and view all the answers

    How many directions does the diaphragmatic surface of the liver cover?

    <p>Three</p> Signup and view all the answers

    What is the weight of the Parotid Gland?

    <p>15 grams</p> Signup and view all the answers

    Which anatomical structure serves as the superior border of the parotid gland?

    <p>Zygomatic arch</p> Signup and view all the answers

    Where does the superficial portion of the Parotid Gland lie?

    <p>In front of the external ear</p> Signup and view all the answers

    Which duct connects the Parotid Gland to the buccal mucosa adjacent to the maxillary second molar?

    <p>Stensen duct</p> Signup and view all the answers

    Which muscle forms the anterior border of the Parotid Gland?

    <p>Masseter</p> Signup and view all the answers

    Which blood vessel brings oxygenated blood to the liver?

    <p>Hepatic artery</p> Signup and view all the answers

    What percentage of blood is supplied to the liver by the portal vein?

    <p>70%</p> Signup and view all the answers

    What is the primary function of the portal vein in the liver?

    <p>To bring venous blood rich in digestive products</p> Signup and view all the answers

    Into which structure do the arterial and venous blood get conducted within the liver?

    <p>Liver sinusoids</p> Signup and view all the answers

    Where do the right and left hepatic veins drain?

    <p>Inferior vena cava</p> Signup and view all the answers

    Which is the largest lobe of the liver?

    <p>Right Lobe</p> Signup and view all the answers

    Which lobe of the liver is flattened and smaller than the right lobe?

    <p>Left Lobe</p> Signup and view all the answers

    Where is the caudate lobe of the liver located?

    <p>Between the fissure for the ligamentum venosum and the inferior vena cava</p> Signup and view all the answers

    Which structure separates the right lobe from the left lobe of the liver?

    <p>Both a and c</p> Signup and view all the answers

    Which lobe of the liver is found between the gallbladder and the fissure for the ligamentum teres hepatis?

    <p>Quadrate Lobe</p> Signup and view all the answers

    Study Notes

    Salivary Glands

    • Classified into two types based on size and location: major salivary glands and minor salivary glands

    Minor Salivary Glands

    • Located in various parts of the oral cavity, including:
      • Labial
      • Lingual
      • Palatal
      • Buccal
      • Glossopalatine
      • Retromolar
    • Present in the submucosal layer and open onto the mucosal surface through short ductal openings

    Major Salivary Glands - Three Pairs

    • Parotid gland
    • Submandibular gland
    • Sublingual gland
    • Located outside the oral cavity, with secretion reaching the mouth through the ductal system

    Parotid Gland

    • Largest major salivary gland
    • Weighs about 15 grams
    • Superficial portion lies in front of the external ear, with the deeper part filling the retromolar fossa
    • Parotid duct (Stenson duct) connects the parotid gland to the buccal mucosa, adjacent to the maxillary second molar
    • Anatomical structures associated with the parotid gland include:
      • Zygomatic arch (superior border)
      • Sternocleidomastoid (posterior border)
      • Masseter (anterior border)
      • Buccinator

    Submandibular Gland

    • Second largest salivary gland, also called submaxillary salivary gland
    • Divided into superficial and deep parts
    • Submandibular duct (Wharton duct) connects the submandibular gland to the floor of the mouth
    • Anatomical structures associated with the submandibular gland include:
      • Submandibular duct
      • Cut edge of mandible
      • Mylohyoid muscle
      • Deep part of submandibular gland
      • Superficial part of submandibular gland
      • Posterior belly of digastric muscle
      • Digastric triangle
      • Anterior belly of digastric muscle

    Sublingual Gland

    • Smallest of the major salivary glands
    • Located between the floor of the mouth, below the mucosa, and above the mylohyoid muscle

    Liver

    • Largest gland in the body
    • Located under the right costal margin, with the right hemidiaphragm separating it from the pleura, lungs, pericardium, and heart
    • Extensions include:
      • Right Lobe (largest lobe, separated from the left lobe by the fossae for the gallbladder and the inferior vena cava)
      • Left Lobe (smaller, flattened lobe)
      • Caudate Lobe (positioned between the fissure for the ligamentum venosum and the inferior vena cava)
      • Quadrate Lobe (located between the gallbladder and the fissure for the ligamentum teres hepatis)
    • Surfaces of the liver include:
      • Diaphragmatic surface (in the anterior, superior, and posterior directions)
      • Visceral surface (in the inferior direction)

    Blood Circulation through the Liver:

    • Blood vessels conveying blood to the liver include:
      • Hepatic artery (30%)
      • Portal vein (70%)
    • Hepatic artery brings oxygenated blood to the liver, and the portal vein brings venous blood rich in the products of digestion
    • Arterial and venous blood is conducted to the central vein of each liver lobule by the liver sinusoids
    • Central veins drain into the right and left hepatic veins, which open directly into the inferior vena cava

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    Description

    Learn about the classification of salivary glands based on size and location into major and minor salivary glands.

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