Head and Neck RCA 4

Card Set Information

Author:
vickrum
ID:
302478
Filename:
Head and Neck RCA 4
Updated:
2015-09-30 23:48:38
Tags:
MICN301
Folders:

Description:
<question> Name the muscle, origin, insertion, innervation and action [] </question> <span style="background-color:#00ffff;"></span> <span style="background-color:#ff0000; color:#ffffff;"></span> <span style="background-color:#00ff00;"></span> <span style="color:#ffffff; background-color:#0000ff;"></span> <span style="background-color:#ffff00; color:#000000;"></span> <span style="background-color:#800080; color:#ffffff;"></span> <span style="background-color:#ff6600; color:#ffffff;"></span> <span style="color:#ffffff; background-color:#ff00ff;"></span>
Show Answers:

Home > Flashcards > Print Preview

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


  1. Describe ongings in the pterygopalatine fossa with Maxillary nerve (V2) branches
    • Within the pterygopalatine fossa gives off two branches which suspend the parasympathetic pterygopalatine ganglion
    • - Sensory fibres of the maxillary nerve pass through the ganglion without synapsing, to supply nose, palate, nasopharynx
  2. Label the nerves and give functions
    • Greater palatine nerve and Lesser palatine nerve: Pass inferiorly from the pterygopalatine ganglion
    • - Descends through the palatine canal
    • - Enter palate through greater & lesser palatine foramina
    • - Function: supply sensory to hard & soft palate
    • Nasopalatine nerve: Runs medially and enters the nasal cavity
    • - runs on the nasal septum & through a foramen to anterior part of the hard palate
    • Nasal nerve: Enter the nasal cavity to supply parts of the lateral wall and septum
    • Pharyngeal nerves: Passes posteriorly
    • - Supply the mucous membrane of the nasopharynx
    • Posterior superior alveolar nerves: Arise from the maxillary nerve within the pterygopalatine fossa
    • - Descend to supply upper posterior teeth.
    • Anterior superior alveolar nerves: Arises from the infraorbital nerve and supplies the upper anterior teeth
    • #
    • Pterygopalatine ganglion
  3. Maxillary nerve (V2) branches; name the nerves indicated
    • Greater palatine nerve and Lesser palatine nerve: Pass inferiorly from the pterygopalatine ganglion
    • - Descends through the palatine canal
    • - Enter palate through greater & lesser palatine foramina
    • - Function: supply sensory to hard & soft palate
    • Nasopalatine nerve: Runs medially and enters the nasal cavity
    • - runs on the nasal septum & through a foramen to anterior part of the hard palate
    • Nasal nerve: Enter the nasal cavity to supply parts of the lateral wall and septum
    • Pharyngeal nerves: Passes posteriorly
    • - Supply the mucous membrane of the nasopharynx
    • Pterygopalatine ganglion
  4. Maxillary nerve (V2) branches; name the nerves indicated
    • Posterior superior alveolar nerves: Arise from the maxillary nerve within the pterygopalatine fossa
    • - Descend to supply upper posterior teeth.
    • Anterior superior alveolar nerves: Arises from the infraorbital nerve and supplies the upper anterior teeth
    • #
    • Pterygopalatine ganglion
  5. This is an image with the medial nasal septum turned up.
    Maxillary nerve (V2) branches; name the nerves indicated
    • Greater palatine nerve and Lesser palatine nerve: Pass inferiorly from the pterygopalatine ganglion
    • - Descends through the palatine canal
    • - Enter palate through greater & lesser palatine foramina
    • - Function: supply sensory to hard & soft palate
    • Nasopalatine nerve: Runs medially and enters the nasal cavity
    • - runs on the nasal septum & through a foramen to anterior part of the hard palate
    • Nasal nerve: Enter the nasal cavity to supply parts of the lateral wall and septum
    • Pterygopalatine ganglion
  6. Label:
    • Nasal bone
    • Lacrimal bone
    • Mandible
    • Zygomatic bone
    • Vomer
    • Maxilla
    • Parietal Bone
    • Occipital Bone
    • Sphenoid
    • Ethmoid
    • Temporal Bone
    • Frontal Bone
    • Sagittal suture
    • Occipital Bone
    • Temporal bone
    • Right + left parietal bone
    • Squamous suture
    • Mandible
    • Occipital bone
    • Lambdoid suture
    • Sagittal suture
    • Right + left parietal bone
    • Coronal suture
    • Frontal bone
    • Nasal bones
    • Sphenoid
    • Frontal sinus
    • Sphenoidal sinus
    • Nasal bone
    • Ethmoid
    • Vomer
    • Palatine bone
    • Maxilla
    • Mandible
  7. Describe the functions and gross anatomical features of the medial wall of the nasal cavities
    • The two nasal cavities are separated by a median partition, the *nasal septum* that forms the medial wall of each nasal cavity. The nasal septum comprises a skeleton of;
    • – bone: vomer, perpendicular plate of ethmoid
    • Vomer
    • perpendicular plate of ethmoid
    • – and cartilage together with a covering of mucosa
    • Septal cartilage
    • #
    • Nasal crests of the;
    • - maxilla and
    • - palatine bones
  8. Describe the functions and gross anatomical features of the lateral wall of the nasal cavities
    • The lateral wall of each nasal cavity similarly comprises a skeleton of hard tissue with (2) components
    • – bone : nasal conchae or turbinate (= scroll-like) bones, frontal process of maxilla, perpendicular plate of palatine bone, nasal bone, lacrimal bone
    • Frontal process
    • Lacrimal bone
    • Nasal bone
    • (Perpendicular plate of) Palatine bone
    • Ethmoid bone; with superior and middle concha and
    • - inferior concha; is a separate bone
    • Nasal meatuses: air passages below the respective conchae; i.e. superior, middle and inferior
    • – and cartilage together with a covering of mucosa
    • Cartilage
  9. Describe the functions and gross anatomical features of the roof (3) and floor (2) of the nasal cavities
    • Frontal bone
    • Cribiform plate of the ethmoid bone
    • Sphenoid
    • Horizontal plate of the palatine bone
    • Palatine process of the maxillae bone
  10. Describe the functions and gross anatomical features of the floor (only) of the nasal cavities
    • Palatine process of the maxillae bone
    • Hard palate
    • Horizontal plate of the palatine bone
    • Soft palate
  11. What is the orbit? What are the 5 anatomical parts of the orbit? What bones form them?
    • The orbit: is the cavity or socket of the skull in which the eye and its appendages are situated. It has 4 walls and an apex;
    • Roof: mainly orbital plate of frontal bone, near the apex lesser wing of sphenoid
    • Medial wall: mainly ethmoid with contributions from frontal bone, lacrimal, and sphenoid.
    • Floor: mainly by maxilla, partly by zygomatic bone. Floor is partly separated from lateral wall by the inferior orbital fissure.
    • Lateral wall: zygomatic bone and greater wing of sphenoid.
    • - Partly separated from roof by superior orbital fissure (communicates with middle cranial fossa)
    • Apex: is at optic canal, medial to superior orbital fissure
  12. Give the technical name for eyelids
    Describe the surrounding/lacrimal apparatus

    • Eye lids (palpebrae) are covered externally by thin skin, and internally by conjunctiva, which is reflected onto the eyeball.
    • #
    • Tarsal plates: are dense fibrous tissue bands which strengthens the eyelids.
    • - Tarsal glands are embedded in the plates, secretion lubricates and prevents eyelids sticking together.
    • Medial and lateral palpebral ligaments: connect the eyelids to their respective margins of the orbit.
    • Lacrimal gland: lies in a fossa in lateral part of the roof of orbit.
    • - It drains by about dozen small ducts on to the conjunctiva
    • Lacrimal sac: is lodged within the lacrimal groove.
    • - It receives lacrimal canaliculi and is continuous below with the nasolacrimal duct, which drains into the inferior meatus of the nose.
  13. Contents of the orbit: Muscles
    Name the muscles, their origin, insertion, innervation and actions
    • Levator palpebrae superioris muscle:
    • - Origin - roof of orbit close to apex
    • - Insertion - tarsal plate and skin of upper eyelid
    • - Innervation - oculomotor nerve (III)
    • - Action - elevates upper eyelid
    • #RECTUS MUSCLES (4) ; (attachments)
    • Superior rectus: common tendinous ring at the apex of the orbit to superior surface of eyeball
    • - Action: elevates the eyeball
    • Inferior rectus: common tendinous ring to inferior surface of eyeball
    • - Action; depresses the eye ball
    • Medial rectus: common tendinous ring to medial surface of eyeball
    • - action - adducts the eyeball
    • - Innervation: above 3 by oculomotor nerve (III)
    • Lateral rectus: common tendinous ring to lateral surface of eyeball
    • - Action - abducts the eyeball
    • - Innervation: abducent nerve (VI)
    • Superior oblique muscle:
    • - Origin - body of sphenoid
    • - Insertion - tendon passes through a fibrous ring (trochlea) at superomedial angle of orbital wall, changes direction and inserts into sclera deep to superior rectus muscle
    • - Innervation - trochlear nerve (IV)
    • - Action - abducts and depresses
    • Inferior oblique muscle:
    • - Origin - anterior part of floor of orbit
    • - Insertion - sclera deep to lateral rectus muscle
    • - Innervation - oculomotor nerve (III)
    • - Action - abducts and elevates
  14. Contents of the orbit: Nerves 
    • Nasocilliary nerve: passes forwards within the cone of muscles, and gives off the following branches;
    • Long ciliary nerves: carry sensory fibers to cornea
    • - postganglionic sympathetic fibres from superior cervical ganglion to the dilator pupillae muscles
    • Posterior and anterior ethmoidal nerves: enter the respective foramina in the medial wall of the orbit
    • - Anterior ethmodal n. enters the face via the nose as the external nasal nerve
    • Ciliary ganglion: situated behind the eyeball
    • - is a relay station for parasympathetic fibres brought along the oculomotor nerve
    • Short ciliary nerves: carries postganglionic parasympathetic fibres to the sphincter pupillae and ciliary muscles.
  15. Contents of the orbit: Arteries
    • Ophthalmic artery: branches off the internal carotid artery as it emerges from the cavernous sinus
    • - accompanies the optic nerve into the orbit through the optic canal
    • - Branches are similar to those of the nasociliary nerve
    • Central artery of the retina: runs to the retina within the optic nerve
  16. Contents of the orbit: Veins
    Name the CYAN vein, its tributaries, and its path
    • Ophthalmic veins: Both branches of ophthalmic veins pass through the superior orbital fissure and
    • - enter the Cavernous sinus
    • #
    • Facial vein communicates with;
    • - the superior ophthalmic vein at the medial cathus
  17. What are the 3 parts of the external ear?
    • Auricle: Sensory supply - V3 (auriculotemporal nerve)
    • External auditory meatus: S-shaped passage which extends to the tympanic membrane
    • - Lateral third cartilaginous, medial two-thirds bony (petrous temporal).
    • - Cereuminous and sebaceous glands produce cerumen (ear wax).
    • Tympanic membrane: slopes away at lower edge, covered with skin externally and mucous membrane internally.
  18. What are the parts of the middle ear?
    Give the bones and muscles + functions

    • The tympanic cavity is directly internal to membrane.
    • Contains auditory ossicles linking tympanic membrane to oval window of inner ear.
    • - Malleus, incus, stapes (move at synovial joints)
    • Two small muscles, tensor tympani (handle of mallius - V3) stapedius (stapes - VII) - dampen excessive movement on loud noises.
    • Auditory Tube: opens into anterior wall of tympanic cavity at lateral end
    • - into the nasopharynx at medial end.
  19. What are the parts of the inner ear?
    - Give the innervation
    • Bony labyrinth: is in very dense petrous temporal bone. It contains;
    • - Vestibule: Oval window opens to tympanic cavity (filled by foot plate of stapes).
    • - Cochlea: lies anterior to vestibule. Round window into tympanic cavity
    • - Semicircular canals lie posterior to vestibule, one in each plane.
    • #
    • Supplied by VIII: at the lateral end of the internal auditory meatus, it divides into a cochlear and vestibular portions.

What would you like to do?

Home > Flashcards > Print Preview