Skull, foramina and cranial nerves

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Question 1 of 1

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What bones form the coronal suture?

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Explanation

Between parietal bones is the sagittal suture, Between parietal and occipital bones is the lamboid suture

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What is bregma?

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Explanation

Junction of sagittal and lamboid sutures is lambda

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Parts of what bones form the anterior cranial fossa?

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What is the name of the structure projecting superiorly from the ethmoid bone?

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Explanation

Cribiform plate is lateral to ethmoid, Anterior clinoid process are part of the lesser wings of sphenoid, Frontal crest is a midline ridge extending from frontal bone (where falx cerebri attaches)

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What is the boundary between anterior and middle cranial fossa?

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Explanation

Anterior clinoid process are part of the lesser wings of sphenoid, Tuberculum sellae is the anterior wall of the sella turica - a remainder of sphenoid

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Where is the internal acoustic meatus found?

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Explanation

Between occipital and and petromastoid is a groove for the inferior petrosal sinus, Posterolateral to the hypoglossal canal is the small condylar canal, The depressed region is called tegmen tympani and marks thin bony roof of middle ear cavity

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What is the pterion?

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Explanation

Parietal and frontal bones form the coronal suture, Parietal bones form the sagittal suture, Parietal and occipital bones form the lamboid suture

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Why is injury to the pterion so dangerous and what would it cause?

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337710

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From what pharyngeal arch does the facial nerve arise?

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337711

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Match foramina with structures that pass through it

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Match the text
Foramen cecum
Olfactory foramen in cribiform plate
Optic canal
Superior orbital fissure
Foramen rotundum
Foramen ovale
Foramen spinosum
Hiatus for the greater petrosal nerve
Hiatus for the lesser petrosal nerve
Foramen Magnum
Internal acoustic meatus
Jugular foramen
Hypoglossal canal
Condylar canal

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Occulomotor nerve: trochlear nerve; opthalmic division of the trigeminal nerve: abducens nerve and opthalmic veins
Maxillary division of the trigeminal nerve
Lesser petrosal nerve
Olfactory nerves
Facial nerve: vestibulocochlear nerve and labyrinthine artery
Emissary veins to nasal cavity
Greater petrosal nerve
Middle meningeal artery
End of brainstem/beginning of spinal cord: vertebral arteries: spinal roots of accessory nerve and meninges
Optic nerve and opthalmic artery
Glossopharyngeal nerve: Vagus Nerve: Accessory nerve: Inferior petrosal sinus and sigmoid sinus that forms internal jugular vein
Hypoglossal nerve: meningeal branch of ascending pharyngeal artery
Emissary vein
Mandibular division of the trigeminal nerve: lesser petrosal nerve

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Match cranial nerves with their number

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I
II
III
IV
V1
V2
V3
VI
VII
VIII
IX
X
XI
XII

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Glossopharyngeal nerve
Mandibular division of trigeminal
Olfactory
Abducent nerve
Maxillary nerve
Facial nerve
Opthalmic division of trigeminal
Trochlear
Accessory nerve
Optic nerve
Vagus nerve
Vestibulocochlear nerve
Oculomotor nerve
Hypoglossal nerve

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Match pharyngeal arch to nerves

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First
Second
Third
Fourth
Sixth

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Facial
Recurrent laryngeal branch of the vagus
Glossopharyngeal
Trigeminal V3
Superior laryngeal branch of vagus

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Match cranial nerve to function

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Olfactory
Optic
Oculomotor
Trochlear
Trigeminal: V1
Trigeminal V2
Trigeminal V3
Abducent
Facial
Vestibulocochlear
Glossopharyngeal
Vestibulocochlear
Spinal accessory nerve
Hypoglossal nerve

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Instrinsic and extinsic tongue muscles except palatoglossus
Ext ear: larynx: pharynx: abdominal viscera: taste from epiglottis
Extrinsic eye muscles and levator palpebrae superioris: Pupillary sphincter
Scalp forehand and nose
Anterior 2/3 tongue: Skin over mandible and lower teeth : Muscles of mastication
Hearing and balance
External ear sensation: Taste from anterior 2/3 tongue and hard/soft palate: Muscles of facial expression: Lacrimal Submandibular: sublingual and mucous glands
Smell
Superior oblique
Trapezius: sternocleidomastoid
Cheeks: Lower eye lid: Nasal mucosa: Upper lip: Upper teeth and palate
Post 1/3 tongue: ext/middle ear: carotid body and sinus: Taste from post 1/3 tongue: Parotid gland: Stylopharyngeus
Lacteral rectus
Vision

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Match cranial nerve and lesion symptoms

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Olfactory
Optic
Oculomotor
Trochlear
Trigeminal
Abducent
Facial
Vestibulocochlear
Glossopharyngeal
Vagus
Spinal accessory nerve
Hypoglossal nerve

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Blindness/visual field abnormalities and loss of pupillary constriction
Inability of lateral eye movement
Paralysis of sternocleidomastoid and trapezius muscles
Inability to look inferiorly when the eye is adducted (down and in)
Atrophy of ipsilateral muscles of the tongue and deviation toward the affected side: speech disturbance
Loss of sensation and pain in the region supplied by the three divisions of the nerve over the face: loss of motor function of the muscles of mastication on the side of the lesion
Progressive unilateral hearing loss and tinnitus (ringing in the ear)
Anosmia
Paralysis of facial musclesAbnormal taste sensation from the anterior two-thirds of the tongue and dry conjunctivae: Paralysis of contralateral facial muscles below the eye
Soft palate deviation with deviation of the uvula to the normal side and vocal cord paralysis
Loss of taste to the posterior one-third of the tongue and sensation of the soft palate
Dilated pupil: ptosis: loss of normal pupillary reflex: eye moves down inferiorly and laterally (down and out)

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Match cranial nerve to afferent reflex

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Corneal reflex
Gag reflex
Pupillary light reflex

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Trigeminal
Glossopharyngeal
Optic

Skull, foramina and cranial nerves

Question 1 of 1

Time Left

What bones form the coronal suture?

Select the correct answer(s).

(0/0)

Explanation

What is bregma?

Select the correct answer(s).

(0/0)

Explanation

Parts of what bones form the anterior cranial fossa?

Select the correct answer(s).

(0/0)

What is the name of the structure projecting superiorly from the ethmoid bone?

Select the correct answer(s).

(0/0)

Explanation

What is the boundary between anterior and middle cranial fossa?

Select the correct answer(s).

(0/0)

Explanation

Where is the internal acoustic meatus found?

Select the correct answer(s).

(0/0)

Explanation

What is the pterion?

Select the correct answer(s).

(0/0)

Explanation

Why is injury to the pterion so dangerous and what would it cause?

Select the correct answer(s).

(0/0)

From what pharyngeal arch does the facial nerve arise?

Select the correct answer(s).

(0/0)

Match foramina with structures that pass through it

Match the text (click and drag)

(0/0)

Foramen cecum

Olfactory foramen in cribiform plate

Optic canal

Superior orbital fissure

Foramen rotundum

Foramen ovale

Foramen spinosum

Hiatus for the greater petrosal nerve

Hiatus for the lesser petrosal nerve

Foramen Magnum

Internal acoustic meatus

Jugular foramen

Hypoglossal canal

Condylar canal

Occulomotor nerve: trochlear nerve; opthalmic division of the trigeminal nerve: abducens nerve and opthalmic veins

Maxillary division of the trigeminal nerve

Lesser petrosal nerve

Olfactory nerves

Facial nerve: vestibulocochlear nerve and labyrinthine artery

Emissary veins to nasal cavity

Greater petrosal nerve

Middle meningeal artery

End of brainstem/beginning of spinal cord: vertebral arteries: spinal roots of accessory nerve and meninges

Optic nerve and opthalmic artery

Glossopharyngeal nerve: Vagus Nerve: Accessory nerve: Inferior petrosal sinus and sigmoid sinus that forms internal jugular vein

Hypoglossal nerve: meningeal branch of ascending pharyngeal artery

Emissary vein

Mandibular division of the trigeminal nerve: lesser petrosal nerve

Match cranial nerves with their number

Match the text (click and drag)

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I

II

III

IV

V1

V2

V3

VI

VII

VIII