Recent

  • Show all results for ""

🎧 New: AI-Generated Podcasts Turn your study notes into engaging audio conversations. Learn more

Bony Orbits: Lateral wall
25 Questions
4 Views

Bony Orbits: Lateral wall

Created by
@MonumentalLesNabis

Podcast Beta

Play an AI-generated podcast conversation about this lesson

Questions and Answers

Which bone forms the lateral wall of the bony orbit?

  • Frontal bone
  • Maxilla bone
  • Sphenoid bone
  • Zygomatic bone (correct)

    • Which structure is located where the roof and lateral wall of the bony orbit meet?

  • Optic foramen
  • Inferior orbital fissure
  • Lacrimal gland
  • Superior orbital fissure (correct)

    • Which part of the frontal bone contributes to the lateral wall of the bony orbit?

  • Squamous part
  • Frontal process (correct)
  • Nasal part
  • Zygomatic process

    • What is the gap between the lateral wall and floor of the bony orbit called?

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

    Which bone does not contribute to the lateral wall of the bony orbit?

    <p>Occipital bone</p> Signup and view all the answers

    What is the function of the infraorbital nerve?

    <p>To supply the face</p> Signup and view all the answers

    Which bone forms the medial wall of the bony orbit?

    <p>All of the above</p> Signup and view all the answers

    What is the name of the gap between the lateral wall and floor of the bony orbit?

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

    Which structure is located where the roof and medial wall of the bony orbit meet?

    <p>Optic canal</p> Signup and view all the answers

    What is the function of the anterior and posterior ethmoidal foramina?

    <p>To transmit vessels to the nasal cavity and ethmoidal air cells</p> Signup and view all the answers

    Which bone forms the floor of the bony orbit?

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

    What is the name of the channel that connects the lacrimal sac to the nasal cavity?

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

    Which bone contributes to the formation of the lateral wall of the bony orbit?

    <p>All of the above</p> Signup and view all the answers

    What is the name of the foramen that transmits the infraorbital nerve?

    <p>Infraorbital foramen</p> Signup and view all the answers

    Which bone forms the roof of the bony orbit?

    <p>Frontal bone</p> Signup and view all the answers

    Which of the following structures is NOT a part of the nasolacrimal canal?

    <p>Ethmoidal foramina</p> Signup and view all the answers

    What is the function of the orbital openings?

    <p>To allow the passage of nerves and blood vessels</p> Signup and view all the answers

    Which of the following nerves passes through the orbital openings?

    <p>V2</p> Signup and view all the answers

    What is the name of the gap between the lateral wall and floor of the bony orbit?

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

    Which of the following bones contributes to the formation of the nasolacrimal canal?

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

    Which of the following structures is NOT a foramen (canal) in the orbit?

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

    What is the relationship between the superior and inferior orbital fissures?

    <p>They are adjacent to each other</p> Signup and view all the answers

    Which of the following is associated with the frontal bone?

    <p>Optic foramen (canal)</p> Signup and view all the answers

    What is the main function of the superior orbital fissure?

    <p>Transmission of cranial nerves</p> Signup and view all the answers

    What is the location of the inferior orbital fissure?

    <p>Between the lateral wall and floor of the orbit</p> Signup and view all the answers

    Study Notes

    Bony Orbits: Lateral Wall

    • The lateral wall of the bony orbit is composed of four bones:
    • The greater wing of the sphenoid bone forms part of the lateral wall.
    • The frontal process of the zygomatic bone contributes to the lateral wall.
    • The zygomatic process of the frontal bone is another component of the lateral wall.
    • The superior orbital fissure is located at the junction of the roof and lateral wall.
    • The inferior orbital fissure is situated at the junction of the lateral wall and floor.

    Bony Orbits: Lateral Wall

    • The lateral wall of the orbital cavity consists of the greater wing of the sphenoid bone, frontal process of the zygomatic bone, and zygomatic process of the frontal bone.
    • The superior orbital fissure is located where the roof and lateral wall meet.
    • The inferior orbital fissure is located where the lateral wall and floor meet.

    Bony Orbits: Floor

    • The floor of the orbital cavity is composed of the maxillary bone and zygomatic bone.
    • The maxillary process of the zygomatic bone forms the thin orbital floor.
    • The zygomaticofacial foramen is located on the malar surface of the zygomatic bone.
    • The maxillary sinus is also part of the floor.

    Bony Orbits: Medial Wall

    • The medial wall of the orbital cavity is formed by the frontal process of the maxilla, lacrimal bone, and orbital plate of the ethmoid bone.
    • The lacrimal bone contains the fossa for the lacrimal sac, which connects to the nasolacrimal canal and then to the inferior nasal meatus.
    • The orbital plate of the ethmoid bone contains ethmoidal air cells medial to it.
    • The orbital plate of the palatine bone is also part of the medial wall.
    • The body of the sphenoid bone completes the lower part of the optic canal.

    Openings of the Orbit

    • The optic foramen (canal) is located in the frontal bone.
    • The superior orbital fissure is an opening in the lateral wall.
    • The inferior orbital fissure is an opening in the floor.
    • The nasolacrimal canal is an opening in the medial wall.
    • The anterior and posterior ethmoidal foramina are openings in the medial wall.

    Contents of Orbital Openings

    • The optic foramen contains the optic nerve.
    • The superior orbital fissure contains cranial nerves III, IV, V1, and VI.
    • The inferior orbital fissure contains the zygomatic branch of the maxillary nerve (V2).

    Studying That Suits You

    Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

    Quiz Team

    Description

    Bony orbits: lateral wall greater wing of sphenoid  frontal process of zygomatic bone  zygomatic process of frontal bone  superior orbital fissure (where roof and lateral wall meet)  inferior orbital fissure (where lateral wall and floor meet) ANA: Skull - 50

    Bony orbits: floor thin orbital floor maxillary process of zygomatic bone zygomaticofacial foramen on malar surface maxilla maxillary sinus infraorbital nerve ( enters from pterygopalatine fossa through inferior orbital fissure to infraorbital groove then to infraorbital canal then to infraorbital foramen )      

    Maxillary proc., Zygoma ANA: Skull - 51

     ANA: Skull - 52

    Right orbit lateral medial Infraorbital foramen ANA: Skull - 53

    Bony orbits: medial wall frontal process of maxilla frontal bone lacrimal bone fossa for lacrimal sac ( go to nasolacrimal canal then to inferior nasal meatus) orbital plate of ethmoid: (ethmoidal air cells medial to this) orbital plate of palatine bone body of sphenoid: completes the lower part of optic canal optic canal (where roof and medial wall meet) Anterior & posterior ethmoidal foramina (transmitting corresponding vessels (branch of ophthalmic artery ) to supply nasal cavity and ethmoidal air cells )

    Right orbit

    Frontal bone Frontal process of maxilla medial lateral ANA: Skull - 54

      Openings of the orbit
    1. optic foramen (canal) 2. superior orbital fissure 3. inferior orbital fissure 4. nasolacrimal canal
    2. anterior & posterior ethmoidal foramina Frontal bone Frontal process of maxilla ANA: Skull - 57

    Contents of orbital openings III, IV, V , VI 1 V branch 2 ANA: Skull - 58

    More Quizzes Like This

    Bony Pelvis Anatomy Quiz
    10 questions

    Bones of the Pelvis Quiz: Test Your Anatomy Knowledge

    LuxuriousWetland avatar
    LuxuriousWetland
    Anatomy of the Orbit and Eye Quiz
    10 questions

    Eye Anatomy Quiz: Orbit and Eye Structure

    NiceGoshenite avatar
    NiceGoshenite
    Bony Orbit &amp; Accessory Structures Quiz
    30 questions

    Bony Orbit &amp; Accessory Structures Quiz

    RichTourmaline9881 avatar
    RichTourmaline9881
    Recap on Bony Orbit, Eye Movement & Visual Pathways Lecture 9 Quiz
    29 questions

    Recap on Bony Orbit, Eye Movement & Visual Pathways Lecture 9 Quiz

    TantalizingOliveTree avatar
    TantalizingOliveTree
    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser