Human Skull Anatomy

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Which suture divides the frontal and parietal bones?

Coronal suture (correct)

Lambdoid suture

Sagittal suture

Sphenoparietal suture

Which of the following nerves pass through the superior orbital fissure?

Trochlear, abducens, and oculomotor nerves

Lacrimal, frontal, and nasociliary nerves

All of the above (correct)

Only the oculomotor nerve

What is the function of the cavernous sinus?

To transmit the internal carotid artery

To transmit the cranial nerves III and IV

To transmit the ophthalmic and maxillary divisions of CN 5

All of the above (correct)

What is the purpose of the foramen magnum?

To transmit the medulla oblongata and its surrounding meninges (C) Signup and view all the answers

What is the function of the lambdoid suture?

To divide the occipital and parietal bones (B) Signup and view all the answers

What is the name of the thinnest part of the lateral wall of the skull?

Pterion (A) Signup and view all the answers

Which of the following is NOT a part of the hindbrain?

Cerebrum (A) Signup and view all the answers

What is the function of the foramen ovale?

To transmit the large sensory root and small motor root of the mandibular nerve (B) Signup and view all the answers

Which cranial nerve is responsible for providing parasympathetic secretomotor function to the parotid gland?

CN 9 (D) Signup and view all the answers

Which of the following sinuses is NOT a type of paranasal sinus?

Mastoid sinus (A) Signup and view all the answers

At what age do the metopic sutures between frontal bones usually close?

Up to 2 years (A) Signup and view all the answers

What bone forms the lateral margin of the orbit?

Zygomatic bone (D) Signup and view all the answers

Which sinus cavity is separated from the orbital cavity by the orbital plate of the maxilla?

Maxillary sinus (B) Signup and view all the answers

Which structure transmits the nasolacrimal duct?

Nasolacrimal canal (D) Signup and view all the answers

Which bone forms the roof of the orbit?

Frontal bone (A) Signup and view all the answers

Which nerve is transmitted through the infraorbital groove and canal?

Infraorbital nerve (A) Signup and view all the answers

Which nerve is responsible for 80% of eye opening?

Levator Palpebrae Superioris (A) Signup and view all the answers

What is the function of the tensor tympani muscle?

To dampen down vibrations of the tympanic membrane (C) Signup and view all the answers

What is the function of the stapedius muscle?

To dampen down vibrations of the stapes (D) Signup and view all the answers

Which cranial nerve is responsible for supplying the inferior rectus muscle?

CN 3 (B) Signup and view all the answers

What is the function of the ophthalmic artery?

To supply blood to the orbit (B) Signup and view all the answers

What is the function of the lacrimal gland?

To produce tears (D) Signup and view all the answers

What is the function of the lacrimal ducts?

To drain tears into the nasal cavity (C) Signup and view all the answers