3.1 Digestion I

Card Set Information

Author:
efrain12
ID:
299375
Filename:
3.1 Digestion I
Updated:
2015-03-28 16:24:08
Tags:
AnP II
Folders:

Description:
Digestion part 1
Show Answers:

Home > Flashcards > Print Preview

The flashcards below were created by user efrain12 on FreezingBlue Flashcards. What would you like to do?


  1. What are the 2 parts of digestive system? (2)_
    -alimentary canal

    -accessory digestive organs
  2. Alimentary canal AKA
    GI tract
  3. How are accessory digestive organs connected to alimentary ?
    Via ducts
  4. Histology of the alimentary canal) how many layers of alimentary canal?
    -4
  5. Histology of the alimentary canal) which are the 4 layers?
    -mucosa

    -submucosa

    -muscularis external

    -adventitia
  6. Histology of the alimentary canal) Mucosa: (2)
    -innermost layer

    -lines the lumen
  7. Histology of the alimentary canal) Mucosa: what are the 3 sublayers?
    -simple columnar epithelium

    • -connective tissue called lamina propria
    • *external to epithelium

    • -muscularis mucosa
    • *external to lamina propria
  8. Histology of the alimentary canal) Mucosa: what does the lamina propria contain?
    Mucus associated lymphoid tissue and glands
  9. Histology of the alimentary canal) Submucosa (3)
    -connective tissue layer just outside the mucosa

    -contains glands

    • -contains ANS part of submucosal plexus
    • *part of enteric nervous system
  10. Histology of the alimentary canal) Muscularis external:  (2)
    -double layer of smooth muscle

    • -controlled by the ANS
    • *myenteric plexus
    • **responsible for peristalsis and segmentation
  11. Histology of the alimentary canal) Serosa ro adventitia
    • Covers the outside of the organ
    • *visceral layer of the peritoneum
  12. Membranes within the body) Comparing membranes to balloon... outer balloon wall would be comparable to
    Parental peritoneum
  13. Membranes within the body) Comparing membranes to balloon... air in balloon would be comparable o
    Peritoneal cavity
  14. Membranes within the body) Comparing membranes to balloon... inner balloon wall would be comparable to
    Visceral peritoneum
  15. What does the peritoneal cavity contain?
    A small amount of fluid
  16. Oral cavity) what are the labia?
    The lips
  17. Oral cavity) what are the lips surrounded by?
    Orbicularis oris muscle
  18. Oral cavity) what does the orbicularis oris muscle do?
    • Closes mouth
    • *drinking from a straw or kiss
  19. Oral cavity) what are the cheeks surrounded by?
    buccinator muscle
  20. Oral cavity) what does the buccinator do?
    • Draws cheek against gums/teeth to create a vacuum
    • *allows sipping action
  21. What are the orbicularis oris and buccinator part of?
    Muscles of facial expression
  22. Muscles of facial expression) all are innervated by?
    Facial nerve 7
  23. Muscles of facial expression) function of these muscles? (2)
    -assist tongue with food manipulation

    -prevent loss of food and liquid from mouth
  24. Muscles of the tongue) function? (2)
    Mix food with saliva and

    Help to push food in swallowing
  25. Muscles of the tongue) all tongue muscles are innervated by
    Hypoglossal nerve
  26. Muscles of the tongue) intrinsic tongue muscles function
    Change shape of tongue but not position
  27. Muscles of the tongue) extrinsic tongue muscles
    • Move tongue position
    • *protrude, side to side, retract
    • **does not alter shape of the tongue
  28. Extrinsic muscles of the tongue) what are the 3?
    -genioglossus

    -styloglossus

    -hyoglossus
  29. Extrinsic muscles of the tongue) genioglossus (3)
    -protrudes

    -depresses

    *pulls it forward towards the chin
  30. Extrinsic muscles of the tongue) styloglossus (3)
    -retracts

    -helps with swallowing

    *lifts tongue towards styloid process
  31. Extrinsic muscles of the tongue) hyoglossus (3)
    -depresses

    -retracts

    *down and back to hyoid bone
  32. Oral cavity) what's the palate?
    Roof of the mouth
  33. Oral cavity ) hard palate (2)
    • -formed by maxilla and the palatine bones
    • *anterior side
  34. Oral cavity ) soft palate
    -formed by skeletal muscle covered with mucosa

    -ends in uvula
  35. Oral cavity ) soft palate, uvula: what does it help with?
    Helps to close the nasopharynx when you swallow
  36. What creates gag reflex?
    -CN IX sensory afferent

    -CN X motor efferent
  37. Teeth) 2 categories
    -deciduous

    -permanent
  38. Teeth) how many deciduous teeth are there in total?
    20
  39. Teeth) deciduous aka
    Baby teeth
  40. Teeth) permanent are held by
    Maxilla and mandible
  41. Teeth) how many permananet teeth are there?
    32
  42. Teeth) what are the 4 types of permanent teeth?
    -incisors

    -canine

    -premolars

    -molars
  43. Teeth) incisors
    Cutting food
  44. Teeth) canine
    tear and pierce
  45. Teeth)premolars and molars
    Useful for grinding & crushing food
  46. Salivary glands) what doe they do?
    Produce and secrete saliva
  47. Salivary glands) saliva beings digestion through
    • chemical breakdown of food
    • *mainly CHO
  48. Salivary glands) 3 main glands
    -parotid

    -submandibular

    -sublingual
  49. Salivary glands) where is parotid gland located?
    Anterior to the ear
  50. Salivary glands) where is the submandibular located?
    Under the angle of the mandible
  51. Salivary glands) where is the sublingual located?
    Under the tongue
  52. Salivary glands) which is the largest?
    parotid
  53. Salivary glands) parotid gland: innervated by?
    CN IX
  54. Salivary glands) parotid gland: part of
    Parasympathetic at otic ganglion
  55. Salivary glands) parotid gland: function
    Increased secretion of watery (serous) saliva
  56. Salivary glands) parotid duct : how does it arrive at oral cavity?
    It pierces buccinator to enter oral cavity
  57. Salivary glands) parotid duct : what lies along the duct?
    Accessory carotid tissue
  58. Salivary glands) parotid duct : submandibular and sublingual glands: are innervated by?
    CN VII
  59. Salivary glands) parotid duct : submandibular and sublingual glands: part of
    Parasympathetic through submandibular ganglion
  60. Salivary glands) parotid duct : submandibular and sublingual glands: function
    Increased secretion of watery (serous) saliva
  61. What are Wharton duct?
    outlet for submandibular glands
  62. Muscles of mastication ) what type of breakdown does it do?
    Mechanical breakdown of food
  63. Muscles of mastication ) function
    • Mastication
    • *chewing
  64. Muscles of mastication ) innervated
    By CN V3 of trigeminal nerve, Mandibular branch
  65. Muscles of mastication ) what are the 4 muscles ?
    -temporalis

    -masseter

    -medial pterygoid

    -lateral pterygoid
  66. Muscles of mastication ) temporalis: description
    Large fan shaped
  67. Muscles of mastication ) temporalis: extends from
    Temporal bone to coronoid process of the mandible
  68. Muscles of mastication ) temporalis: action
    Closes the jaw
  69. Muscles of mastication ) masseter: extends from
    zygomatic arch into the angle of the mandible body
  70. Muscles of mastication ) masseter: position from the mandible?
    Lateral to mandible
  71. Muscles of mastication ) masseter: action (2)
    Closes jaw

    protrudes jaw
  72. Muscles of mastication ) what are the 2 external muscles of mastication
    -temporalis & masseter
  73. Muscles of mastication ) medial pterygoid:  anchored from
    Sphenoid, palatine, and maxilla to mandible
  74. Muscles of mastication ) medial pterygoid: position to mandible
    Medial to mandible
  75. Muscles of mastication ) medial pterygoid: action (3)
    Elevates the jaw

    protrudes the jaw

    -moves side to side
  76. Muscles of mastication ) lateral pterygoid : extends from
    -sphenoid to condylar process mandible (TMJ)
  77. Muscles of mastication ) medial pterygoid: action (2)
    Protrude the jaw

    Moves side to side
  78. Muscles of mastication ) which are the 2 internal muscles of mastication
    • -lateral and medial pterygoid
    • *these lay deep to mandible
  79. Pharynx) is nasopharynx closed or open during swallowing?
    closed
  80. Pharynx) oropharynx boundaries
    -uvula to epiglottis
  81. Pharynx) laryngopharynx boundaries
    Epiglottis to start of esophagus
  82. Pharynx) is the laryngopharynx posterior or anterior to the larynx?
    Posterior
  83. Esophagus) length from
    Pharynx to stomach
  84. Esophagus) upper part consist off
    Skeletal muscle
  85. Esophagus) lower part consist of
    Smooth muscle
  86. Esophagus) why is it lined with stratified squamous epithelium?
    Protects our lumen from sharp objects or acid
  87. Esophagus) position relative to trachea?
    Posterior to it
  88. Esophagus) gastroesophageal sphincter: located at?
    • Opening of esophagus into stomach
    • *inferior to diaphragm
  89. Esophagus) gastroesophageal sphincter: what does it prevent?
    Regurgitation
  90. Esophagus) gastroesophageal sphincter: is it anatomical or physiological sphincter?
    Physiological sphincter

What would you like to do?

Home > Flashcards > Print Preview