Acland anatomy part 4 (Oral cavity and surroundings)

Card Set Information

Acland anatomy part 4 (Oral cavity and surroundings)
2014-01-21 17:27:30
oral cavity

oral cavity anatomy
Show Answers:

  1. The dip section between the condyle and the coronoid process is:
    the mandibular notch
  2. Projection in the midline of the mandibile external body
    mental protuberance
  3. 4 protuberances on the posterior midline portion of the body of the mandibule
    Mental spine
  4. The TMJ is a _______ joint, with ______ _____ on the bones surfaces and a _____ ______ that encloses synovial fluid
    • Synovial
    • Articular cartilage
    • joint capsule
  5. In the TMJ there are ___ separate synovial cavities (one above the other) separated by an _____ ____ thats flexible and highly movable
    • 2
    • Articular disc
  6. The 2 movements capable by the TMJ are
    • Hinge: (Between the condyle and the disc)
    • Gliding: (between the disc and temporal surface)

    The normal opening of the jaw is a combination of the 2 movements.
  7. Forward movement of the mandibule is held in check by these 2 ligaments that lie outside of the TMJ, where do they insert?
    • Stylomandibular ligament (styloid process to the angle of the mandible)
    • Sphenomandibular ligament (spine of the sphenoid to the lingula)
  8. This muscle arises from the underside of the sphenoid and lateral aspect of the lateral pterygoid plate. Inserts at the neck of the condyle, under the capsule of TMJ, front edge of articular disc. Opens the mandibule...
    Lateral Pterygoid
  9. This muscle arises from the pterygoid fossa and the tuber(maxilla) and runs downwards/backwards to insert in the inner aspect of the angle of the mandible.
    Medial Pterygoid
  10. The largest of the muscles of mastication, this fan shaped muscle arises from the wide area of the side of the skull along the temporal line and the fibers converge from above and behind the coronoid process and inserts on the outer/inner aspect of the coronoid process and anterior part of the ramus of the mandibule
  11. This muscle lies inside the zygomatic arch and occupies the whole of the infratemporal fossa and covered by temporal fasca
  12. This thick muscle arises from the anterior 2/3 of the lower border of the zygomatic arch (outer) fibers run backwards, and the whole length of the inner border of the zygomatic arch (inner) fibers run downwards.
  13. This muscle inserts inferiorly on the angle and ramus of the outside of the mandibule.
  14. Together with its attacts musles, this u shaped, suspended bone has 3 important functions
    • Hyoid
    • Hold ups the tongue which sits above it
    • Holds up the larynx (hangs below it)
    • Transmits the force of muscles that help open the jaw and move the tongue
  15. Which are the two muscles that pull the hyoid upwards and forwards?
    • Mylohyoid
    • Geniohyoid
  16. These muscles that form the mobile floor of the oral cavity arises from the ___________ ____ on the mandibule and joins its pair, inserting on the body of the hyoid
    Mylohyoid line
  17. These muscles arise from the lower part of mental spine, are located above the mylohyoid muscles and insert on the body of the hyoid bone.
  18. The muscle that pulls the hyoid upwards and backwards, arises from the lateral aspect of the styloid process and inserts on the base of the greater horn of the hyoid. (which muscle passes through an opening of his)
    • Stylohyoid
    • Posterior belly of digastric
  19. This posterior belly of this muscle (PULLEY UPWARDS) arises from the digastric notch of the ________ bone and the mastoid process. And passes through the sling of the stylohyoid to attach to the hyoid body. Anterior belly goes from hyoid under the mylohyoid to attach to digastric fossa on the mandible
    • Temporal¬†
    • Anterior and posterior bellys of Disgastric muscie
  20. 3 muscles that pull the hyoid downwards. INFRAHYOID MUSCLES
    • Omohyoid
    • Sternohyoid
    • Thyrohyoid
  21. Which are the 3 extrinsic muscles (attach to bone) of the tongue, from largest to smallest?
    • Hyoglossus
    • Genioglossus
    • Styloglossus
  22. Which 2 muscles form the root of the tongue?
    • Hyoglossus
    • Genioglossus
  23. These lingual muscles arise from the upper part of the mental spine, it compacts and pulls tongue forward.
  24. This lingual muscle arises from the whole length of the greater horn of the hyoid and ends along the side of the tongue, flattening and pulling backwards
  25. Fold in the mucous membrane running from the soft palate to the side of the tongue, acts as a dam preventing liquids from spilling back, is called the:
    Palato-glossal arch
  26. Behind the palato-glossal arch is the _______ _______ arch and the triangle that forms between them is occupied by ______ in younger people.
    • Palatopharyngeal arch
    • tonsils
  27. Band that goes from the pterygoid hamulus to the posterior end of the mylohyoid line, which 2 muscles arise from this band?
    • The pterygomandibular band (raphe)
    • Buccinator (in front)
    • Superior constrictor of the pharynx (behind)
  28. Two muscles of the face responsible for preventing distension of the cheeks and the tight closing of the opening of the oral cavity. These muscles are closely linked together
    • Buccinator
    • Orbicularis Oris
  29. Which are the 3 salivary glands?
    • Parotid
    • Submandibular
    • Siblingual
  30. Saliva from the parotid gland exits through the _______ _____ which emerges from the anterior part of the gland and passes forward around the anterior border of the masseter, Passes through the buccinator and exits around the 2nd upper molar.
    Parotid duct
  31. This gland curls around the free border of the mylohyoid muscle near the angle of the mandibule. What is the name of the passage which it drains?
    • submandibular gland
    • submandibular duct
  32. The submandibular duct runs along the floor of the mouth and ends beside the _______
    lingual frenum
  33. This gland is flat and diffuse, runs along the  genioglossus muscle. saliva from it enters through
    • sublingual
    • several small openings
  34. The _____ cartilage is partly enclosed by the larger _____ cartilage which sits above it. Both of which are _____ to the hyoid bone
    • Cricoid
    • Thyroid
    • Inferior
  35. The thyroid cartilage laminae meet at an angle of ___ in female and ___ in males, in which is projects forward giving rise to the _____ ____.
    • 120
    • 90
    • adams apple
  36. The thyroid laminae meet above in a V-shaped notch called.
    Superior thyroid notch
  37. In the thyroid cartilage the superior and inferior tubercles are joined by this ridge, which is a muscle attachment for:
    Oblique line
  38. The thyroid cartilage contains 2 _______ horns and 2 _______ inferior horns, which project where?
  39. The thyroid cartilage is suspended from the hyoid bone by the ________ ______ which posteriorly becomes thicker to form the _______ ___________ _______
    • Thyrohyoid membrane
    • Lateral thyrohyoid ligament
  40. The inferior horn of the thyroid cartilage articulates with the _____ ______ at the _________ _______.
    • Cricoid cartilage
    • Cricothyroid joint
  41. Below the Cricoid cartilage is continus with the
  42. The wall of the pharynx is made up by continuous muscle lined by mucous membrane. The muscular layer consists of 3 sheets of muscles
    Superior, middle and inferior constrictor muscles.
  43. This one of the constrictor muscles arises from the medial pterygoid plate, the hamulus the pterygomandibular band and side of the tongue. has a free upper border formed by a fascia and below inside the middle
  44. This constrictor arises from the greater and lesser horn of the hyoid bone.
  45. The thickest of the constrictor muscles that arises from just behind the oblique line on the thyroid cartilage and the side of cricoid. It continues inferiorly with the muscles of the esophagus, another muscle forms below with the cricoid cartilage that forms a sphinter.
    • Inferior
    • Cricopharyngeus muscle
  46. It arises from the palate aponeurosis and passes downwards and forwards to insert on the side of the tongue. Pulls the soft palate forward and downwards
  47. Arises from the edge of the hard palate and palatal aponeurosis, passes downwards and backwards to blend with continues layer of longitudinal muscle that lines the pharynx.  Lowest fibers insert on posterior border of thyroid cartilage
  48. Palatopharyngeus lies inside the _______ muscles, hiding them almost completely