Sphenoid bone - landmarks, functions, attachments Flashcards by Catherine Ard

Q

What is the name of this bone?

A

Sphenoid bone

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Q

Name this landmark

A

Sulcus chiasmatis

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Q

What is the function of the sulcus chiasmatis?

A

It transmits the optic chiasm

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Q

Name this landmark

A

Optic canal

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Q

What is the function of the optic canal?

A

It transmits the optic nerve and ophthalmic artery

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Q

Name this landmark

A

Sella turcica

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Q

What are the parts of the sella turcica? (2)

A

Hypophyseal fossa and posterior clinoid processes (#1 in this picture is fossa)

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Q

What is the function of the hypophyseal fossa?

A

It houses the pituitary

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Q

Name this landmark

A

Carotid groove

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Q

What is the function of the carotid groove?

A

It houses the internal carotid artery and nerve.

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Q

Name this landmark

A

Sphenoid sinus

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Q

Name this landmark

A

Cerebral surfaces of greater wings (of sphenoid bone).

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Q

Name this landmark

A

Foramen rotundum

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Q

What is the function of the foramen rotundum?

A

It transmits the maxillary nerve

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Q

Name this landmark

A

Foramen ovale

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Q

What is the function of the foramen ovale?

A

It transmits the mandibular nerve and accessory meningeal artery

Q

Name this landmark (the one I crossed out the label for).

A

Spine of the greater wings (of the sphenoid bone).

Q

What attaches to the spine of the greater wings? (2)

A

Tensor palatini muscle and sphenomandibular ligament

Q

Name this landmark.

A

Foramen spinosum

Q

What is the function of the foramen spinosum?

A

Transmits the middle meningeal artery and the meningeal (recurrent) branch of the mandibular nerve

Q

Name this landmark

A

Lateral surface of greater wings

Q

What attaches at the lateral surface? (2)

A

Temporalis and lateral pterygoid muscles

Q

Name this landmark (hint: the holes)

A

Superior orbital fissure

Q

What is the function of the superior orbital fissure? (5)

A

Transmits the opthalmic nerve and vein, oculomotar nerve, abducens nerve, trochlear nerve

Name this landmark.

Foramen lacerum

Name the landmark.

Anterior clinoid processes (of lesser wings of sphenoid bone)

What attaches at the anterior clinoid processes?

Tentorium cerebelli

Name the landmark (of the crossed out thing).

Pterygoid process

Name the landmark.

Pterygoid fossa

What attaches to the pterygoid fossa?

Medial pterygoid muscle

Name the landmark (the crossed out one).

Scaphoid fossa

What attaches to the scaphoid fossa?

Tensor palatini muscle

Name the landmark.

Pterygoid canal

What is the function of the pterygoid canal?

It transmits the nerve of the pterygoid canal.

Name the landmark.

Lateral pterygoid plate

What attaches to the lateral pterygoid plate? (2)

Lateral and medial pterygoid muscles.

Name the landmark.

Pterygoid hamulus

What is the fuction and what are the attachments of the pterygoid hamulus? (3 attachments)

Function: Deflects the tendon of the tensor palatini muscle Atttachment: Buccinators, superior constrictor muscle, pterygomandibular raphe