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Anatomy > Skull > Flashcards

Skull Flashcards

1
Q

Paired cranial bones

A

Parietal

Temporal

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2
Q

Fracture of this bone may cause blood or CSF to escape from the ear, hearing loss and facial nerve damage

A

Petrous portion of the temporal bone

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3
Q

Fracture of this area causes anosmia, periorbital bruising/raccoon eyes and CSF leakage from the nose/ rhinorrhea

A

Anterior cranial fossa

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4
Q

Layer involved in a lacerated scalp responsible for the gaping wound/ bleeding

A

Galea aponeurotica

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5
Q

Layer involved in a lacerated scalp responsible for infection

A

Loose areolar connective tissue

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6
Q

Premature closure of sagittal suture. Long and narrow skull. Frontal and occipital expansion.

A

Scaphocephaly

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7
Q

Premature closure of CORONAL suture. Short, High “tower” skull/ cone head

A

Oxycephaly/acrocephaly

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8
Q

Premature closure of coronal and lambdoid sutures on 1 side of the skull

A

Plagiocephaly

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9
Q

Prevention for neural tube defects (Defective closure of the neural tube 4th week)

A

Folic acid 400 mg daily 3 months prior to conception

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10
Q

Point of meeting and articulation of frontal, parietal, squamous temporal and great wing of sphenoid is called

A

Pterion

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11
Q

Degeneration of substantia nigra results in what medical condition

A

Parkinson’s disease (dopamine doesn’t cross BBB so give L-dopa)

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12
Q

Degeneration of which part of the brain presents as chorea

A

Striatum

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13
Q

Degeneration of which part of the brain presents as hemiballismus

A

Subthalamic nucleus

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14
Q

Most common location of berry aneurysms

A

Anterior part of circle of Willis (anterior communicating, posterior communicating or MCA)

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15
Q

Facial muscles develop from which pharyngeal arches

A

Mesoderm in the 2nd pharyngeal arches

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16
Q

Muscles of facial expression: smiling

A

Zygomaticus

17
Q

Muscles of facial expression: grinning

A

Risorius

18
Q

Muscles of facial expression: blowing/ sucking

A

Buccinator

19
Q

Muscles of facial expression: chin

A

Mentalis

20
Q

Borders of dangerous triangle

A

Root of the nose and 2 angles of the mouth

21
Q

Corneal blink reflex is caused by

A

Contraction of orbicularis oculi muscles
Efferent limb: facial nerve
Afferent: nasociliary nerve of ophthalmic division of trigeminal

22
Q

Side of the nose is supplied by

A

Maxillary division of trigeminal nerve (V2)

23
Q

Caused by pressure on or interruption of the blood supply of the trigeminal/gaserian ganglion. Sharp, stabbing pain on areas innervated by sensory branches V2,V3

A

Tic Douloureux/ trigeminal neuralgia

24
Q

Lingual papillae: large and flat-topped, anterior to terminal sulcus

A

Vallate

25
Q

Lingual papillae: long and numerous. Contain afferent nerve endings sensitive to touch

A

Filliform

26
Q

Lingual papillae: mushroom shaped. Most numerous at apex and sides

A

Fungiform

27
Q

Lingual papillae: small lateral folds of lingual mucosa. Poorly developed in humans

A

Foliate

28
Q

Internal strabismus (medial deviation or esotropia) is a consequence of an injury to what cranial nerve?

A

Abducens CN VI

29
Q

Ptosis is a consequence of an injury to what cranial nerve?

A

Oculomotor CN III

30
Q

Extortion is a consequence of an injury to what cranial nerve?

A

Trochlear CN IV

31
Q

Mydriasis (dilated pupil) involves which cranial nerve

A

Oculomotor

32
Q

Inability to whistle involves which nerve

A

Facial

33
Q

Loss of common sensation of anterior 2/3 of tongue involves which nerve

A

Trigeminal

34
Q

Paresthesia of face involves which nerve

A

Trigeminal (CN V)

35
Q

Location of decussation of corticospinal tract

A

Lower medulla

36
Q

Lack of secretion of parotid gland involves which nerve

A

CN IX Glossopharyngeal

Anatomy (7 decks)

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