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ANATOMY > CHAPTER 12 (Cranial Nerves) - Joe Notes > Flashcards

CHAPTER 12 (Cranial Nerves) - Joe Notes Flashcards

1
Q

Which among the cranial nerves are entirely SENSORY?

A

CN I - Olfactory
CN II - Optic
CN VIII - Vestibulocochlear

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2
Q

Which among the cranial nerves are entirely MOTOR?

A 
CN III - Oculomotor
CN IV - Trochlear
CN VI - Abducens
CN XI - Accessory 
CN XII - Hypoglossal
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3
Q

Which among the cranial nerves are MIXED?

A

CN V - Trigeminal
CN VII - Facial
CN IX - Glosspharyngeal
CN X - Vagus

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4
Q

The OLFACTORY NERVES arise from?

A

Olfactory Receptor Nerve Cells

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5
Q

The OLFACTORY MUCOUS MEMBRANE is situated?

A

Upper part of nasal cavity, ABOVE SUPERIOR CONCHA

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6
Q

Where does the OLFACTORY NERVE PASS THROUGH?

A

CRIBRIFORM PLATE of ethmoid bone

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7
Q

OCULOMOTOR NERVE emerges from?

A

anterior surface of MIDBRAIN

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8
Q

Where does the OCULOMOTOR NERVE divide into SUPERIOR RAMUS and INFERIOR RAMUS?

A

In the MIDDLE CRANIAL FOSSA in the LATERAL WALL of the CAVERNOUS SINUS

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9
Q

The OCULOMOTOR NERVE enters the ORBITAL CAVITY through the?

A

Superior Orbital Fissure

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10
Q

For EXTRINSIC EYE MUSCLES, what supplies the

  • Levator Palpebrae Superioris
  • Superior Rectus
  • Medial Rectus
  • Inferior Rectus
  • Inferior Oblique
A

SOMATIC motor fibers

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11
Q

For INTRINSIC EYE MUSCLES, what supplies the

  • Constrictor Pupillae of the Iris
  • Ciliary Muscles
A

PARASYMPATHETIC component of OCULOMOTOR NERVE

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12
Q

What is said to be the SLENDEREST CRANIAL NERVE?

A

CN IV - Trochlear Nerve

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13
Q

The TROCHLEAR NERVE leaves through the?

A

Posterior Surface of the MIDBRAIN

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14
Q

The TROCHLEAR NERVE enters the ORBIT through the?

A

Superior Orbital Fissure

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15
Q

What is the only muscle that the Trochlear Nerve supplies?

A

Superior Oblique Muscle

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16
Q

The Trochlear Nerve turns eye in what direction?

A

DOWNWARD and LATERALLY

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17
Q

This is considered to be the LARGEST CRANIAL NERVE?

A

CN V - Trigeminal Nerve

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18
Q

The Trigeminal Nerve leaves the?

A

ANTERIOR aspect of the PONS

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19
Q

TRUE OR FALSE

The OPTHALMIC NERVE (VI) is PURELY SENSORY.

A

TRUE

20
Q

What are the three branches of the Opthalmic Nerve (V1)?

A
  • Lacrimal
  • Frontal
  • Nasociliary Nerve

*Mneumonic: LaFeN = “Laughing”

21
Q

What Cranial Nerves passes through the Anterior Fossa?

A

CN I - Olfactory

22
Q

What Cranial Nerves passes through the Middle Fossa?

A 
CN II - Optic
CN III - Oculomotor
CN iV - Trochlear 
CN V - Trigeminal
CN VI - Abducens
23
Q

What Cranial Nerves passes through the Posterior Fossa?

A 
CN VII - Facial
CN VIII - Vestibulocochlear
CN IX - Glossopharyngeal
CN X - Vagus
CN XI - Accessory
CN XII - Hypoglossal
24
Q

What contains the PARASYMPATHETIC SECRETOMOTOR FIBERS to the LACRIMAL GLAND?

A

ZYGOMATICOTEMPORAL BRANCH of the Maxillary Nerve

25
Q

What joins the LACRIMAL NERVE as it runs forward on the upper border of the lateral rectus muscle?

A

ZYGOMATICOTEMPORAL BRANCH of the Maxillary Nerve

26
Q

FUNCTION of the SENSORY COMPONENT of OLFACTORY NERVE?

A

> Smell

27
Q

FUNCTION of the SENSORY COMPONENT OF OPTIC NERVE?

A

> Vision

28
Q

FUNCTION of the MOTOR COMPONENT OF THE OCULOMOTOR NERVE?

A

> Lifts upper eyelid
Turns eyeball upward, downward and medially
Constricts pupil
Accommodates eye

29
Q

FUNCTION of the MOTOR COMPONENT OF THE TROCHLEAR NERVE?

A

> Assists in turning eyeball downward and laterally

30
Q

FUNCTION of the SENSORY COMPONENT OF THE OPTHALMIC DIVISION OF TRIGEMINAL NERVE?

A

> Cornea, skin of forehead, scalp, eyelids and nose

> also, Mucous membranes of Paranasal Sinuses and Nasal Cavity

31
Q

FUNCTION of the SENSORY COMPONENT OF THE MAXILLARY DIVISION OF TRIGEMINAL NERVE?

A

> Skin of face over the maxilla and the upper lip, teeth of the upper jaw, mucous membrane of the nose, maxillary air sinus, and palate

32
Q

FUNCTION of the MOTOR COMPONENT OF THE MANDIBULAR DIVISION OF TRIGEMINAL NERVE?

A

> Muscle of mastication, myolyhoid, anterior belly of digastric, tensor veli palatini, and tensor tympani

33
Q

FUNCTION of the SENSORY COMPONENT OF THE MANDIBULAR DIVISION OF TRIGEMINAL NERVE?

A

> Skin of cheek
Skin over mandible, lower lip, and side of head
Teeth of lower jaw and temporomandibular joint
Mucous membrane of the mouth and anterior two thirds of the tongue

34
Q

FUNCTION of the MOTOR COMPONENT OF ABDUCENS NERVE?

A

> Lateral rectus muscle: turns eyeball laterally

35
Q

FUNCTION of the MOTOR COMPONENT OF FACIAL NERVE?

A

> Muscles of the face, cheek and scalp
Stapedius muscle of the middle ear
Stylohyoid
Posterior belly of digastric

36
Q

FUNCTION of the SENSORY COMPONENT OF FACIAL NERVE?

A

> Taste from the anterior two thirds of the tongue, floor of the mouth, and palate

37
Q

FUNCTION of the SECRETOMOTOR PARASYMPATHETIC COMPONENT OF FACIAL NERVE?

A

> Submandibular and sublingual salivary glands, lacrimal gland and glands of the nose and palate

38
Q

FUNCTION of the SENSORY COMPONENT OF VESTIBULAR PART OF VESTIBULOCOCHLEAR NERVE?

A

> Position and movement of the head

39
Q

FUNCTION of the SENSORY COMPONENT OF COCHLEAR PART OF VESTIBULOCOCHLEAR NERVE?

A

> Hearing

40
Q

FUNCTION of the MOTOR COMPONENT OF GLOSSOPHARYNGEAL NERVE?

A

> Stylopharyngeus muscle: assists swallowing

41
Q

FUNCTION of the SECRETOMOTOR PARASYMPATHETIC COMPONENT OF GLOSSOPHARYNGEAL NERVE?

A

> Parotid Salivary Gland

42
Q

FUNCTION of the SENSORY COMPONENT OF GLOSSOPHARYNGEAL NERVE?

A

> General sensation and taste from posterior third of the tongue and pharynx
Carotid sinus and carotid body

43
Q

FUNCTION of the MOTOR COMPONENT OF VAGUS NERVE?

A

> Constrictor muscles of the pharynx and intrinsic muscles of the larynx
Involuntary muscle of trachea and bronchi, heart, alimentary tract from pharynx to splenic flexure of colon
Liver and pancreas

44
Q

FUNCTION of the SENSORY COMPONENT OF VAGUS NERVE?

A

> Taste from epiglottis and vallecula and afferent fibers from structures named above

45
Q

FUNCTION of the MOTOR COMPONENT OF CRANIAL ROOT OF ACCESSORY NERVE?

A

> Muscle of the soft palate, pharynx and larynx

46
Q

FUNCTION of the MOTOR COMPONENT OF SPINAL ROOT OF ACCESSORY NERVE?

A

> Sternocleidomastoid and trapezius muscle

47
Q

FUNCTION of the MOTOR COMPONENT OF HYPOGLOSSAL NERVE?

A

> Muscles of the tongue controlling its shape and movement (except palatoglossus)

ANATOMY (12 decks)

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