Foramina of the Skull Flashcards

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Questions and Answers

What are olfactory foramina?

Holes in the cribriform plate (correct)

Connects two atria in fetal heart

Allows optic nerve to pass

Canal leading to eardrum

What does the optic canal allow to pass?

optic nerve

What nerves pass through the superior orbital fissure?

Oculomotor nerve III, trochlear nerve IV, ophthalmic division V1 of trigeminal nerve V and abducens nerve VI

What is the function of the inferior orbital fissure?

Branches of trigeminal nerve Signup and view all the answers

What does the external acoustic meatus lead to?

eardrum and middle ear Signup and view all the answers

Which nerves are transmitted through the internal acoustic meatus?

facial nerve, vestibulocochlear nerve Signup and view all the answers

What does the foramen lacerum transmit?

internal carotid artery Signup and view all the answers

What passes through the foramen rotundum?

branch of trigeminal nerve Signup and view all the answers

What is the foramen ovale associated with?

connects the two atria in the fetal heart; branch of trigeminal nerve Signup and view all the answers

What does the foramen spinosum transmit?

middle meningeal artery; branch of trigeminal nerve Signup and view all the answers

What structures are transmitted through the jugular foramen?

internal jugular vein, glossopharyngeal, vagus, accessory nerves Signup and view all the answers

What nerve passes through the hypoglossal canal?

hypoglossal nerve Signup and view all the answers

What does the carotid canal transmit?

internal carotid artery Signup and view all the answers

Which structures pass through the foramen magnum?

medulla oblongata, accessory nerve Signup and view all the answers

What passes through the supraorbital foramen/notch?

supraorbital nerve Signup and view all the answers

What nerve is associated with the infraorbital foramen/notch?

infraorbital nerve Signup and view all the answers

What does the mandibular foramen transmit?

branches of trigeminal nerve Signup and view all the answers

What is the function of the mental foramen?

branch of trigeminal nerve Signup and view all the answers

Study Notes

Olfactory Foramina

Located in the cribriform plate of the skull.
Function to transmit olfactory nerves responsible for the sense of smell.

Optic Canal

Channel for the optic nerve.
Connects the brain to the eye, essential for vision.

Superior Orbital Fissure

Passageway for multiple cranial nerves: oculomotor (III), trochlear (IV), and abducens (VI).
Transmits the ophthalmic division (V1) of the trigeminal nerve.

Inferior Orbital Fissure

Provides a route for branches of the trigeminal nerve.
Facilitates nerve structure support in the orbital cavity.

External Acoustic Meatus

Canal leading directly to the eardrum and middle ear.
Important for sound transmission to the inner ear.

Internal Acoustic Meatus

Pathway for cranial nerves: facial nerve and vestibulocochlear nerve.
Plays a role in hearing and balance.

Foramen Lacerum

Primarily associated with the internal carotid artery.
Involved in important vascular supply to the brain.

Foramen Rotundum

Transmits a specific branch of the trigeminal nerve.
Essential for sensory information relay from the face.

Foramen Ovale

Provides a connection between atria in a fetal heart, but in adults often refers to the trigeminal nerve branch.
Facilitates controlled blood flow during fetal development.

Foramen Spinosum

Allows passage for the middle meningeal artery and a branch of the trigeminal nerve.
Important for supplying the meninges.

Jugular Foramen

Transmits the internal jugular vein along with cranial nerves: glossopharyngeal, vagus, and accessory.
Critical for venous drainage from the cranial cavity.

Hypoglossal Canal

Passageway for the hypoglossal nerve.
Important for tongue movements and speech.

Carotid Canal

Channel for the internal carotid artery.
Vital for blood supply to the brain.

Foramen Magnum

Large opening at the base of the skull for the medulla oblongata and accessory nerve.
Serves as a vital connection between the brain and spinal cord.

Supraorbital Foramen/Notch

Passage for the supraorbital nerve.
Provides sensation to the forehead region.

Infraorbital Foramen/Notch

Allows the passage of the infraorbital nerve.
Supplies sensation to the mid-face area.

Mandibular Foramen

Transmits branches of the trigeminal nerve.
Important for dental procedures affecting the lower jaw.

Mental Foramen

Passage for a branch of the trigeminal nerve.
Facilitates sensation to the chin and lower lip region.

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Description

Test your knowledge of the foramina of the skull with these flashcards. Each card includes a term related to the skull's foramina, along with its definition. Perfect for students of anatomy or anyone interested in human biology.