Sphenoid bone - landmarks, functions, attachments Flashcards
What is the name of this bone?
Sphenoid bone
Name this landmark
Sulcus chiasmatis
What is the function of the sulcus chiasmatis?
It transmits the optic chiasm
Name this landmark
Optic canal
What is the function of the optic canal?
It transmits the optic nerve and ophthalmic artery
Name this landmark
Sella turcica
What are the parts of the sella turcica? (2)
Hypophyseal fossa and posterior clinoid processes (#1 in this picture is fossa)
What is the function of the hypophyseal fossa?
It houses the pituitary
Name this landmark
Carotid groove
What is the function of the carotid groove?
It houses the internal carotid artery and nerve.
Name this landmark
Sphenoid sinus
Name this landmark
Cerebral surfaces of greater wings (of sphenoid bone).
Name this landmark
Foramen rotundum
What is the function of the foramen rotundum?
It transmits the maxillary nerve
Name this landmark
Foramen ovale
What is the function of the foramen ovale?
It transmits the mandibular nerve and accessory meningeal artery
Name this landmark (the one I crossed out the label for).
Spine of the greater wings (of the sphenoid bone).
What attaches to the spine of the greater wings? (2)
Tensor palatini muscle and sphenomandibular ligament
Name this landmark.
Foramen spinosum
What is the function of the foramen spinosum?
Transmits the middle meningeal artery and the meningeal (recurrent) branch of the mandibular nerve
Name this landmark
Lateral surface of greater wings
What attaches at the lateral surface? (2)
Temporalis and lateral pterygoid muscles
Name this landmark (hint: the holes)
Superior orbital fissure
What is the function of the superior orbital fissure? (5)
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
