Cranial Nerve And Muscl Chart

CRANIAL NERVE AND MUSCLE CHART

Name

NOSE

SENSORY OR MOTOR TO

SENSORY—SMELL

SENSORY—SIGHT

LEVATOR PALPEBRAE SUPERIORIS

RECTUS SUPERIOR OBLIQUUS INFERIOR RECTUS MEDIAUS RECTUS INFERIOR

IV I EYE

OBUQUUS SUPERIOR

PALATE

SENSORY-FACE & INT. STRUCTURES OF HEAD

TENSOR TYMPANI TENSOR VEU PALATINI

MASTI

CATION

TEMPORALIS

PTERYGOIDEUS MEDIAUS

PTERVGOIDEUS LATERALIS MYLOHYOIDEUS

ANTERIOR DIGASTRIC

RECTUS LATERALIS

TONGUE SENSORY—TASTE. ANTERIOR Vt TONGUE

SENSORY - EXTERNAL EAR

I EAR

S HYOID SCALP

EAR SCALP

POSTERIOR DIGASTRIC STYLOHYOI DEUS

OCCIPITALIS

INTRINSIC EAR MUSCLES

AURICULARIS POSTERIOR

EYEBR

IS ANTERIOR

IS SUPERIOR TEMP

AURICULARIS ANTERIOR AURICULARIS SUPERIOR FRONTALIS

'POST AURICULAR BRANCH

TEMPORAL BRANCH

CORRUGATOR SUPERCILII

EYEUD

ORBICULARIS OCULI PROCERUS DEPRESSOR SEPTI

NASALIS TRANSVERSE & ALAR

ZYGOMATICUS MAJOR & MINOR!

LEVATOR LABII SUPERIORIS BUCCINATOR

< BUCCAL BRANCH

ORBICULARIS ORIS

LEVATOR ANGULI ORIS

DEPRESSOR ANGULI ORIS DEPRESSOR LABII INFERIORIS ^MENTALIS

NECK

LEVATOR LABII SUPERIORIS BUCCINATOR

DEPRESSOR ANGULI ORIS DEPRESSOR LABII INFERIORIS ^MENTALIS

< BUCCAL BRANCH

MAiAD! BULAR BRANCH

MAiAD! BULAR BRANCH

CERVICAL BRANCH

S SENSORY-HEARING & EQUILIBRIUM

TONGUE PHARYNX

S SENSORY—POSTERIOR V, TONGUE S SENSORY—PHARYNX FAUCES. SOFT PALATE

STYLOPHARYNGEUS

STRIATED MUSCLES - PHARNYX

STRIATED MUSCLES—SOFT PALATE. PHARYNX & LARYNX

INVOLUNTARY MUSCLES—ALIMENTARY TRACT

INVOLUNTARY MUSCLES—AIR PASSAGES INVOLUNTARY CARDIAC MUSCLE

SENSORY—AURICULAR S SENSORY—ALIMENTARY TRACT

SENSORY—AIR PASSAGES S ' SENSORY—ABDOMINAL VISCERA & HEART

TRAPEZIUS & STERNOCLEIDOMASTOID LEVATOR VEU PALATINI

-tttt

DERMATOMES

vent, \dorsal primary \ ramiA \

CUTANEOUS DISTRIBUTION OF CRANIAL NERVES

STRIATFD MUSCLES—SO""LATE. puarvmy «, i arvmv

STYLOGLOSSUS

HYOGLOSSUS

TONGUE GENIOGLOSSUS

TONGUE INTRINSICS

Ophthalmic

1. Suprafrochear N

3. lacrimal N.

4. HStodibr N.

5. NM N. Minili hiilu

9 AuriaJötampöial N

Mtaifay tico-tempaal N. 7. MaoribÉal N. Zygomatico ficial N.

pprviral morwc

12. Gnafer aodptal N.

13. lesser Oodpial N.

14. Gm* Auricular N.

H> 11.1.MI FROM Gray" Anatomy of the

Human Body. 28TH OD

S. HYOID

© 1993 Florence P. Kendall. Author grants permission to reproduce for personal use but not for sale.

MusclesMferves

Origin

Insertion

Action and Page Reference

Buccinator/Fac/a/

Alveolar processes of the maxilla, buccinator ridge of the mandible, and pterygo-mandibular ligament

Orbicularis oris at angle of the mouth

Compresses the cheeks (see p. 130)

Corrugator supercilii Facial

Medial end of the superciliary arch

Deep surface of skin above middle of the orbital arch

Draws the eyebrow downward and inward, with vertical wrinkles in forehead; "frowning muscle" (see p. 128)

Depressor anguli oris/Facial

Oblique line of the mandible

Angle of the mouth, blending with adjacent muscle

Depresses angle of the mouth (see p. 131)

Depressor labii inferioris/Fac/a/

Oblique line of the mandible

Integument of the lower lip, blending with the orbicularis oris

Draws the lower lip downward and slightly sideways, as in expressions of irony (see p. 130)

Depressor septi nasi/Fac/a/

Incisive fossa of the maxilla

Ala and septum of the nose

Draws aJa of the nose downward to close the nose (see p. 128)

Frontalis/Fac/'a/

Galea aponeurotica

Muscles and skin of the eyebrow and root of the nose

Raises the eyebrows and wrinkles the forehead, as in expressions of surprise or fright (see p. 128)

Levator anguli oris/Facial

Canine fossa of the maxilla

Angle of the mouth, blending with the orbicularis oris

Depresses the nasolabial furrow, as in expressions of contempt or disdain (see p. 129)

Levator labii superioris/Fac/'a/

Lower margin of orbit

Orbicularis of the upper lip

Moves the upper lip upward and forward (see p. 130)

Levator labii superioris alaeque nasil Oculomotor

Root of nasal process of the maxilla

Greater alar cartilage, skin of the nose, and lateral part of the upper lip

Raises and protrudes the upper lip (see p. 130)

Levator palpebrae superioris/

Oculomotor

Inferior surface of lesser wing of the sphenoid

Skin of the eyelid, tarsal plate of the upper eyelid, orbital wall, and medial and lateral expansion of aponeurosis of the insertion

Raises the upper eyelids (see p. 133)

Masseter/ Trigeminal

Superficial portion: Zygomatic process of the maxilla and lower border of the zygomatic arch

Profundus portion: Posterior V» of inferior border and medial surface of the zygomatic arch

Angle and ramus of the mandible

Superior Vz of ramus and lateral surface of coronoid process of mandible

Closes the jaw (see p. 131) Closes the jaw (see p. 131)

Mentatis/Facial

Incisive fossa of the mandible

Skin of the chin

Raises and protrudes the lower lip and wrinkles skin on the chin, as in pouting (see p. 131)

Nasalis, alar portion/Facial

Maxilla

Ala of the nose

Enlarges the nostrils (see p. 128)

Nasalis, transverse portion/Fac/a/

Above and lateral to incisive fossa of the maxilla i

By aponeurosis with nasalis on the opposite side

Depresses cartilaginous part of the nose (see p. 128)

FACIAL AND EYE MUSCLES

Muscles/Aferves

Origin

Page Reference

Obliquus inferior ocu 1 \l Oculomotor

Orbital plate of the maxilla

External part of the sclera, between the rectus superior and rectus lateralis and posterior to equator of the eyeball

Directs the cornea upwarc and outward (see p. 133)

Obliquus superior ocuWI Trochlear

Above medial margin of the optic foramen

Into sclera between the rectus superior and rectus lateralis and posterior to equator of the eyeball

Directs the cornea downward and outward (see p. 133)

Orbicularis oculi/ Facial

Nasal part of the frontal bone, frontal process of the maxilla, and anterior surface of the medial palpebral ligament

Muscle fibers surround the circumference of the orbit, spread downward on the cheek, and blend with adjacent muscular or ligamentous structures

Palpebral part: Closes eyes gently

Orbital part: Stronger closing (see p. 132)

Orbicularis oris/Facial

Numerous strata of muscular fibers surrounding the mouth; derived in part from other facial muscles

Into skin and mucous membrane of the tips, blending with other muscles

Closes lips and protrudes them forward (see p. 130)

Platysma/Fac/a/

Fascia covering superior portion of the pectoralis major and deltoid

Lower border of the mandible, the posterior fibers blending with muscles about angle and lower part of the mouth

Retracts and depresses angle of the mouth (see p. 130)

Procerus/Facial

Fascia covering lower part of the nasal bone and upper part of the lateral nasal cartilage

Into skin over lower part of the forehead between eyebrows

Pulls inner angle of the eyebrows downward and produces transverse wrinkles over bridge of the nose (see p. 129)

Pterygoideus lateralis/7Wgern/na/

Superior head: Lateral surface of the great wing of the sphenoid and the infratemporal crest

Inferior head: Lateral surface of the lateral pterygoid

Depression, anterior part of condyle of the mandible, and anterior margin of articular disk of temporomandibular articulation

Opens the jaws, protrudes the mandible, and moves the mandible from side to side (see p. 131)

Pterygoideus medialis/Tr/gem/na/

Media/ surface of the lateral1 pterygoid plate, pyramidal process of the palatine bone, and tuberosity of the maxilla

Interior and posterior part of medial surface of the ramus and angle of the mandibular foramen

Closes the jaw (see p. 131)

Recti superior. Inferior, and medialis/Ocu/omofor Rectus lateralis/ Abducent

Fibrous ring that surrounds superior, medial, and inferior margins of the optic foramen --

Into sclera, anterior to equator of the eyeball at the site implied by each name

Movement of the eye in the direction indicated by the name of the muscle (see p. 133)

Bisorius/Facial

Fascia over the masseter

Into skin at angle of the mouth

Retracts the angle of the mouth (see p. 129)

'emporalis/ Trigeminal

Temporal fossa and fascia

Coronoid process and anterior border of ramus of the mandible

Closes the jaws (see p. 131)

Z

Zygomaticus major/ acial

Zygomatic bone in front of the temporal process

Angle of the mouth, blending with the adjacent muscles

Draws angle of the mouth up and out, as in a smile see p. 129)

j

[ygomaticus minor/ acial

Zygomatic bone, malar surface

1

Drbicularis oris of the upper lip

Deepens the nasolabial furrow, as in expressions f sadness

FRONTALIS

CORRUGATOR SUPERCILII

Test: Draw the eyebrows together, as in frowning.

Test: Raise the eyebrows, wrinkling the forehead, as in an expression of surprise or fright.

Test: Draw the eyebrows together, as in frowning.

DEPRESSOR SEPTI AND NASALIS, ALAR PORTION TRANSVERSE PORTION NASALIS

Test: Widen the apertures of the nostrils, as in forced or difficult breathing.

Test: Draw the point of the nose downward, narrowing the nostrils.

FACIAL AND EYE MUSCLE TESTS 129

PROCERUS

LEVATOR ANGULI ORIS

Test: Pull the skin of the nose upward, forming transverse wrinkles over the bridge of the nose.

Test: Draw the angle of the mouth straight upward, deepening the furrow from the side of the nose to the side of the mouth, as in sneering. Suggest that the patient try to show the "eye" (canine) tooth, first on one side and then on the other.

RISORIUS

ZYGOMATICUS MAJOR

Test: Draw the angle of the mouth backward.

Test: Draw the angle of the mouth backward.

Test: Draw the angle of the mouth upward and outward, as in smiling.

DEPRESSOR LABII INFERIORIS LEVATOR LABII SUPERIORIS AND PLATYSMA

Test: Raise and protrude the upper lip, as if to show the upper gums.

ORBICULARIS ORIS

Test: Close and protrude the lips, as in whistling.

Test: Draw the lower lip and angle of the mouth downward and outward, tensing the skin over the neck.

BUCCINATOR

Test: Press the cheeks firmly against the side teeth and pull back the angle of the mouth, as in blowing a trumpet. (Drawing the chin backward, as seen in this illustration, is not part of the action of the buccinator muscle.)

FACIAL AND EYE MUSCLE TESTS 131

MENTALIS DEPRESSOR ANGULI ORIS

Test: Raise the skin of the chin. As a result, the lower Test: Draw down the angles of the mouth, lip will protrude somewhat, as in pouting.

TEMPORALIS, MASSETER, AND PTERYGOIDEUS LATERALIS PTERYGOIDEUS MEDIALIS

Test: Open the mouth slightly. Protrude the lower jaw, Test: Close the jaws, and bite firmly with the mouth and then move the lower jaw sideways, first toward the slightly open to show that the teeth are being clenched, right and then toward the left.

SUPRAHYOID MUSCLES ORBICULARIS OCULI

Test: Depress the lower jaw against resistance provided by the examiner. During action of the suprahyoid muscles, the infrahyoid muscles furnish fixation of the hyoid bone (For origins, insertions, actions and innervations, see p. 138. For an illustration, see Chapter 4, p. 151.)

Test, Orbital Part: Close the eyelid firmly, forming wrinkles that radiate from the outer angle.

Test, Palpebral Part: Close the eyelid gently (not illustrated) .

Test: Begin with a relaxed starting position, as shown in Figure A. Then, depress the hyoid bone, as illustrated in Figure B. (For origins, insertions, actions and innerva-

tions of infrahyoid muscles, see pp. 138-139. For an illustration, see Chapter 4, p. 151.)

RECTUS MEDIALIS OCUU AND RECTUS LATERALIS OCULI

Test, Right Rectus Medialis and Left Rectus Lateralis: Look horizontally toward the left (as illustrated).

Test, Left Rectus Medialis and Right Rectus Later-alis: Look horizontally toward the right (not illustrated).

LEVATOR PALPEBRAE SUPERIORIS ET AL

Test, Levator Palpebrae Superioris: Raise the upper eyelid.

Test, Rectus Superior and Obliquus Inferior: Look straight upward toward the brow.

Test, Rectus Inferior and Obliquus Superior: Look straight downward toward the mouth (not illustrated).

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