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© 2012 Pearson Education, Inc. BIO 238. © 2012 Pearson Education, Inc. PARIETAL BONE (left) PARIETAL BONE (right) OCCIPITAL BONE MANDIBLE TEMPORAL BONE.

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Presentation on theme: "© 2012 Pearson Education, Inc. BIO 238. © 2012 Pearson Education, Inc. PARIETAL BONE (left) PARIETAL BONE (right) OCCIPITAL BONE MANDIBLE TEMPORAL BONE."— Presentation transcript:

1 © 2012 Pearson Education, Inc. BIO 238

2 © 2012 Pearson Education, Inc. PARIETAL BONE (left) PARIETAL BONE (right) OCCIPITAL BONE MANDIBLE TEMPORAL BONE Sagittal suture Lambdoid suture Squamous suture Mastoid process Styloid process Occipital condyle External occipital protuberance Posterior view

3 © 2012 Pearson Education, Inc. PARIETAL BONE (left) PARIETAL BONE (right) Lambdoid suture Sagittal suture OCCIPITAL BONE Coronal suture FRONTAL BONE ZYGOMATIC BONE NASAL BONES Superior view

4 © 2012 Pearson Education, Inc. TEMPORAL BONE PARIETAL BONE OCCIPITAL BONE FRONTAL BONE Lateral view Squamous suture Lambdoid suture Squamous part of temporal bone External acoustic meatus Mastoid process Zygomatic arch Styloid process Zygomatic process of temporal bone Temporal process of zygomatic bone Coronal suture SPHENOID NASAL BONE LACRIMAL BONE ETHMOID MAXILLA ZYGOMATIC BONE MANDIBLE Supra-orbital foramen Infra-orbital foramen Mental foramen Mental protuberance

5 © 2012 Pearson Education, Inc. Coronal suture SPHENOID NASAL BONE LACRIMAL BONE ETHMOID MAXILLA Supra-orbital foramen Infra-orbital foramen Mental foramen Mental protuberance ZYGOMATIC BONE Optic canal Inferior orbital fissure Temporal process of zygomatic bone Mastoid process of temporal bone Middle nasal concha (part of ethmoid) Perpendicular plate of ethmoid Bony nasal septum VOMER Superior orbital fissure PARIETAL BONE TEMPORAL BONE PALATINE BONE INFERIOR NASAL CONCHA MANDIBLE Anterior view FRONTAL BONE

6 © 2012 Pearson Education, Inc. ZYGOMATIC BONE MAXILLA TEMPORAL BONE PALATINE BONE Zygomatic arch Medial and lateral pterygoid processes Foramen lacerum Carotid canal Mastoid process Stylomastoid foramen Occipital condyle Foramen magnum VOMER SPHENOID OCCIPITAL BONE FRONTAL BONE Jugular foramen Foreman ovale Styloid process Mandibular fossa External acoustic meatus Lambdoid suture External occipital protuberance Inferior view

7 © 2012 Pearson Education, Inc. Foramen magnum Carotid canal Internal occipital crest FRONTAL BONE ETHMOID SPHENOID TEMPORAL BONE PARIETAL BONE OCCIPITAL BONE Crista galli Cribriform plate Sella turcica Foramen rotundum Foramen lacerum Foramen ovale Foramen spinosum Internal acoustic meatus Jugular foramen Hypoglossal canal Superior view of a horizontal section through the skull, showing the floor of the cranial cavity.

8 © 2012 Pearson Education, Inc. Occipital bone, inferior view External occipital protuberance Inferior nuchal line Hypoglossal canal Occipital condyle Foramen magnum External occipital crest Superior nuchal line

9 © 2012 Pearson Education, Inc. Superior temporal line Inferior temporal line Right parietal bone, lateral view

10 © 2012 Pearson Education, Inc. Anterior surface Superior temporal line Supra-orbital notch Supra-orbital margin Frontal squama Frontal (metopic) suture

11 © 2012 Pearson Education, Inc. External acoustic meatus Squamous part Mandibular fossa Zygomatic process Styloid process Mastoid process Lateral view of the right temporal bone

12 © 2012 Pearson Education, Inc. Pterygoid plates Foramen rotundum Greater wing Orbital surface Superior orbital fissure Sphenoidal sinus Lesser wing Body Pterygoid process Anterior surface

13 © 2012 Pearson Education, Inc. Orbital rim Infra-orbital foramen Alveolar process Anterior nasal spine An anterolateral view of the right maxilla. Zygomatic process

14 © 2012 Pearson Education, Inc. Supra-orbital foramen SPHENOID NASAL BONE TEMPORAL BONE Zygomaticofacial foramen ZYGOMATIC BONE Infra-orbital foramen MAXILLA Bony nasal septum Perpendicular plate of ethmoid VOMER

15 © 2012 Pearson Education, Inc. Articular surface for temporomandibular joint Head Mandibular notch Coronoid process Teeth Alveolar process Mental protuberance Mental foramen Body Ramus Condylar process Angle A lateral and slightly superior view of the mandible

16 © 2012 Pearson Education, Inc. Greater horn Lesser horn Body An anterior view of the hyoid bone

17 © 2012 Pearson Education, Inc.

18 * Sternocleidomastoid (SCM) * O-Sternal head: manubrium of sternum ; Clavicular head: medial 1/3 of clavicle * I- Mastoid process, lateral portion of superior nuchal line of occiput * A-Bilaterally--flexion of neck; Unilaterally--lateral flexion of head and neck to same side and rotation of head to opposite side * N-Spinal accessory nerve (Cranial nerve XI)

19 © 2012 Pearson Education, Inc. Epicranial aponeurosis Depressor labii inferioris Orbicularis oris Mentalis (cut) Zygomaticus major Levator anguli oris Zygomaticus minor Levator labii superioris Nasalis Orbicularis oculi Procerus Frontal belly of occipitofrontalis Depressor anguli oris Omohyoid Platysma (cut and reflected) Lateral view Temporoparietalis (cut and reflected) Temporalis Occipital belly of occipitofrontalis Masseter Buccinator Sternocleidomastoid Trapezius

20 © 2012 Pearson Education, Inc. * All do the same basic actions: * Unilaterally rotates head and neck to opposite side, with the ribs fixed laterally flex the head and neck to the same side * Bilaterally--rasies 1st two ribs during forced inspiration or head and neck flexion

21 © 2012 Pearson Education, Inc. * Anterior Scalene * O- Transverse processes of third through 6th cervical vertebrae * I- First rib * N- Cervical and brachial plexuses * Middle Scalene * O- Transverse processes of second through 7th cervical vertebrae * I- First rib * N- Cervical and brachial plexuses * Posterior Scalenes * O- Transverse processes C5 and C6 * I- Second rib * N- C6 - C8 Nerves

22 © 2012 Pearson Education, Inc. Scalenes Anterior Middle Posterior Anterior view, cervical region

23 © 2012 Pearson Education, Inc. * Masseter * O- Zygomatic arch * I- Angle and ramus of Mandible * A- Elevate the mandible * N- Cranial nerve V- Mandibular branch * Temporalis * O- Temporal fossa and fascia * I- Mandible--coronoid process * A- Elevate and retract the mandible * N-Temporal branches of cranial nerve V

24 © 2012 Pearson Education, Inc. Superior temporal line Temporalis Capsule of temporomandibular joint Zygomatic arch Masseter Lateral view. The temporalis muscle passes medial to the zygomatic arch to insert on the coronoid process of the mandible. The masseter inserts on the angle and lateral surface of the mandible.

25 © 2012 Pearson Education, Inc. * Suprahyoids * O- Underside of mandible, styloid process * I- Hyoid bone * A- Elevate hyoid and tongue, depress mandible * N- Hypoglossal, mylohyoid, facial * Digastrics * O- Mastoid process * I- Inferior border of mandible * A- Depresses mandible if hyoid is fixed, elevates the hyoid if mandible is fixed, retracts the mandible * N- Mylohyoid and facial

26 © 2012 Pearson Education, Inc. * Infrahyoids * O- Thyroid cartridge, top of manubrium, superior border of scapula * I- Hyoid bone and thyroid cartilage * A- Depress the hyoid bone and thyroid cartilage * N- Upper Cervical

27 © 2012 Pearson Education, Inc. Mandible Mylohyoid Digastric Anterior belly Posterior belly Sternocleidomastoid (cut) Omohyoid Superior belly Inferior belly Clavicle Cut heads of sternocleidomastoid Sternum Anterior view Sternal head Clavicular head Sternocleidomastoid Sternohyoid Sternothyroid Thyroid cartilage of larynx Thyrohyoid Hyoid bone Stylohyoid Geniohyoid Mylohyoid (cut and reflected)

28 © 2012 Pearson Education, Inc. * Platysma * O-Fascia covering superior part of pectoralis major * I- Base of Mandible, skin of lower part of face * A- Assist in depression of the mandible, tighten the fascia of the neck * N- Cranial nerve VII (Facial nerve)

29 © 2012 Pearson Education, Inc. Frontal belly of occipitofrontalis Corrugator supercilii Temporalis (temporoparietalis removed) Orbicularis oculi Nasalis Zygomaticus minor Zygomaticus major Orbicularis oris Risorius Platysma Mentalis (cut) Thyroid cartilage of the larynx Epicranial aponeurosis Temporoparietalis (cut and reflected) Temporalis Procerus Levator labii superioris Levator anguli oris Masseter Buccinator Depressor anguli oris Depressor labii inferioris Sternal head of sternocleidomastoid Clavicular head of sternocleidomastoid Trapezius Clavicle Platysma (cut and reflected) Anterior view

30 © 2012 Pearson Education, Inc. * Frontalis * O- Galea aponeurotica * I- Skin & fascia of eyebrows * A- Raises eyebrows and wrinkle forehead * N- Cranial nerve VII (Facial N.) * Occipitalis * O- Galea aponeurotica * I- Superior nuchal line of occipital bone * A- Anchor and retract the galea posteriorly, Moves scalp * N-Cranial nerve VII (Facial N.)

31 © 2012 Pearson Education, Inc. Epicranial aponeurosis Depressor labii inferioris Orbicularis oris Mentalis (cut) Zygomaticus major Levator anguli oris Zygomaticus minor Levator labii superioris Nasalis Orbicularis oculi Procerus Frontal belly of occipitofrontalis Depressor anguli oris Omohyoid Platysma (cut and reflected) Lateral view Temporoparietalis (cut and reflected) Temporalis Occipital belly of occipitofrontalis Masseter Buccinator Sternocleidomastoid Trapezius

32 © 2012 Pearson Education, Inc. * Medial Pterygoid * O-Medial surface of lateral pterygoid plate of sphenoid bone and tuberosity of maxilla * I- Medial surface of ramus of the Mandible * A- Bilaterally- Elevates and protract the mandible; Unilaterally-lateral jaw motion to opposite side * N-Cranial nerve V (Mandibular)

33 © 2012 Pearson Education, Inc. * Lateral Pterygoid * O-Superior head: infratemporal surface and crest of greater wing of sphenoid bone Inferior head: lateral surface of lateral pterygoid plate of sphenoid bone * I- Articular disc and capsule of Temporomandibular joint, neck of mandible * A- Bilateral--protracts jaw; Unilaterally---lateral jaw motion to opposite side * N- Cranial nerve V

34 © 2012 Pearson Education, Inc. Lateral pterygoid Medial pterygoid Cut edge of mandible Lateral view, pterygoid muscles exposed. The location and orientation of the pterygoid muscles can be seen after the overlying muscles, along with a portion of the mandible, are removed.

35 © 2012 Pearson Education, Inc. * Longus Capitis * O-Transverse processes of C3 through C6 * I- Inferior surface of occiput * A- Unilaterally: lateral flexion of head and neck to same side; bilaterally: rotate of head and neck * N- Ventral rami of C1 to C4 * Longus Colli * O- bodies of C5 through T3, transverse processes of C3 through C5 * I- Tubercle on anterior arch of the atlas; bodies of the axis, C3 and C4; transverse processes of C5 and C6 * A-Unilaterally: lateral flexion of head and neck to same side; Bilaterally: rotate of head and neck * N-ventral rami of C1 to C7

36 © 2012 Pearson Education, Inc. Intervertebral Muscles, Posterior View Rotatores Intertransversarii Spinous process of vertebra Transverse process of vertebra Interspinales Posterior view Spinal Flexors Quadratus lumborum Flexors of the Anterior Cervical and Thoracic Spine Thoracodorsal fascia Longus capitis Longus colli Erector Spinae, Deep Layer

37 © 2012 Pearson Education, Inc. * Temporoparietalis * O- Temporal fascia above ear * I- Epicranial aponeurosis * A-Fixes galeal aponeurosis, tightens scalp * N-Temporal branch of cranial nerve VII * Procerus * O- Nose * I- Skin between eyebrows * A-Wrinkes nose skin * N-Temporal branch of cranial nerve VII

38 © 2012 Pearson Education, Inc. * Nasalis * O- Maxilla * I- Nose * A-Dilates nasal openings & compresses nasal cartilage * N-Cranial nerve VII * Orbicularis occuli * O- Medial margin of orbit * I- Skin of eyelid * A-Closes eyelid * N-Temporal and zygomatic branches of cranial nerve VII

39 © 2012 Pearson Education, Inc. * Zygomatic major * O- Zygomatic bone * I- Angle of mouth * A-Retract and elevate corner of mouth * N-Buccal branch of cranial nerve VII * Zygomatic minor * O- Zygomatic bone * I- Upper lip * A-Retract and elevate corner of mouth * N-Buccal branch of cranial nerve VII

40 © 2012 Pearson Education, Inc. * Levator labii superiorus * O- Lower margin of orbit * I- Orbicularis oris muscle * A-Elevate upper lip * N-Buccal branch of cranial nerve VII * Risorius * O- Fascia around parotid salivary gland * I- Angle of mouth * A-Draws corner of mouth to side * N-Buccal branch of cranial nerve VII

41 © 2012 Pearson Education, Inc. * Depressor anguli oris * O- Anterior lateral surface of mandible * I- Skin at angle of mouth * A-Draws corner of mouth down * N-Mandibular branch of cranial nerve VII * Orbicularis Oris * O- Near midline on anterior surface of maxilla and mandible * I- Skin around lips * A- Narrows orifice of mouth, purses lips and puckers lip edges * N- Facial Nerve

42 © 2012 Pearson Education, Inc. * Buccinator * O- From the alveolar processes of the maxillary bone and mandible, temporomandibular joint * I- In the fibers of the orbicularis oris * A- Compresses the cheeks against the teeth and is used in acts such as blowing. * N- facial nerve (VII cranial nerve)

43 © 2012 Pearson Education, Inc. Frontal belly of occipitofrontalis Corrugator supercilii Temporalis (temporoparietalis removed) Orbicularis oculi Nasalis Zygomaticus minor Zygomaticus major Orbicularis oris Risorius Platysma Mentalis (cut) Thyroid cartilage of the larynx Epicranial aponeurosis Temporoparietalis (cut and reflected) Temporalis Procerus Levator labii superioris Levator anguli oris Masseter Buccinator Depressor anguli oris Depressor labii inferioris Sternal head of sternocleidomastoid Clavicular head of sternocleidomastoid Trapezius Clavicle Platysma (cut and reflected) Anterior view


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