Sternocleidomastoid Trapezius Posterior cervical triangle Identify the muscles of the neck and...

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Sternocleidomastoid Trapezius erior cervical triangle Identify the muscles of the neck and indicate their major actions and sources of innervation. Indicate the relationship of each of the muscle groups to the layers of deep fascia in the neck. Anterior triangles Sternocleidomastoid Trapezius Deep Cervical Fascia Investing layer of deep cervical fascia Prevertebral fascia Pretracheal fascia (visceral part) Carot id sheat h Buccopharyngeal fascia Alar fascia Pretrach eal fascia (muscula r part) T E Prevertebral muscles Scalene muscles Suprahyo idmuscle s Infrrahy oidmuscl es

Transcript of Sternocleidomastoid Trapezius Posterior cervical triangle Identify the muscles of the neck and...

Page 1: Sternocleidomastoid Trapezius Posterior cervical triangle Identify the muscles of the neck and indicate their major actions and sources of innervation.

Sternocleidomastoid

Trapezius

Posterior cervical triangle

Identify the muscles of the neck and indicate their major actions and sources of innervation. Indicate the relationship of each of the muscle groups to the layers of

deep fascia in the neck.

Anterior triangles

Sternocleidomastoid

Trapezius Deep Cervical Fascia

Investing layer of deep cervical fascia

Prevertebral fascia

Pretracheal fascia(visceral part)

Carotid sheath

Buccopharyngeal fascia

Alar fascia

Pretracheal fascia(muscular part)

T

E

Prevertebral musclesScalene muscles

Suprahyoidmuscles

Infrrahyoidmuscles

Page 2: Sternocleidomastoid Trapezius Posterior cervical triangle Identify the muscles of the neck and indicate their major actions and sources of innervation.

Identify the three pharyngeal constrictor muscles and their anterior attachments to bony/cartilaginous structures. Identify the three small longitudinal muscles of the pharynx.

Superior constrictor

Middle constrictor

Inferior constrictor

Pterygomandibular raphe

Buccinator

Stylopharyngeus

Cricopharyngeus

Superior constrictor

Middle constrictor

Inferior constrictor

Stylopharyngeus

Cricopharyngeus

Palatopharyngeus

Salpingopharyngeus

Page 3: Sternocleidomastoid Trapezius Posterior cervical triangle Identify the muscles of the neck and indicate their major actions and sources of innervation.

Identify the major cartilages of the larynx

Anterior view Sagittal SectionPosterior view

Thyroid cart.Thyroid cart.

Cricoid cart.

Arytenoid cart.

Epiglottis

Hyoid

Arytenoid cart.

Hyoid

Epiglottis

Cricoid cart.

Vocal Cord

http://www.emory.edu/ANATOMY/Contents.html

Page 4: Sternocleidomastoid Trapezius Posterior cervical triangle Identify the muscles of the neck and indicate their major actions and sources of innervation.

…and the muscles which bring about their movement.

Posterior viewLateral view

Cricothyroid

Lateral view(deeper)

Cricothyroid

LateralCrico-arytenoid

PosteriorCrico-arytenoid

Arytenoideus

Thyro-arytenoid

Page 5: Sternocleidomastoid Trapezius Posterior cervical triangle Identify the muscles of the neck and indicate their major actions and sources of innervation.

Identify the role played by each of these muscles in the control of the control of the size of the rima glottidis.

Thyroid cart.

Aryepiglottic fold

Vocal cord

Arytenoid cart.Rima glottidis

http://www.voice-center.com/voice_mecha.html

Post. Crico-arytenoid

Arytenoideus

Lat. Crico-arytenoid

Vocal cord

Thyroid cart.

Arytenoid cart

Rima glottidis

Actions of intrinsic laryngeal muscles

Page 6: Sternocleidomastoid Trapezius Posterior cervical triangle Identify the muscles of the neck and indicate their major actions and sources of innervation.

Follow the course of sensory and motor innervation of the larynx. Predict the functional consequences of damage to these nerves.

Page 7: Sternocleidomastoid Trapezius Posterior cervical triangle Identify the muscles of the neck and indicate their major actions and sources of innervation.

Trace the course of nerves through the neck noting especially: the sensory and motor branches of the cervical and brachial plexuses, their course and distribution in the neck and

their relationship to major bony, muscular, or vascular landmarks in the region.

Great auricular n. Lesser occipital n.

Ansa cervicalis

Hypoglossal n. (XII)

Accessory n. (XI)

Phrenic n.

Vagus n. (X)

C5

C6

C7

C8

T1

Dorsal scapular n.

Nn. to longus colli and scalenes

Long thoracic n.

Suprascapular n.

C1

C2

C3

C4

C5

Phrenic n.

Great auricular n.

Lesser occipital

n.

Hypoglossal n. (XII)

Transverse cervical nn.

Ansa cervicalis

Supraclavicular nn.Accessory n. (XI)

Page 8: Sternocleidomastoid Trapezius Posterior cervical triangle Identify the muscles of the neck and indicate their major actions and sources of innervation.

Trace the course of nerves through the neck noting especially: the extension of the upper part of the sympathetic trunk into the neck region.

Sup. Cervical gang.

Cervicothoracic gang.

Middle Cervical gang.

Carotid plexus

Glossopharyngeal (IX)

Vagus (X)

C2

C1

C3

C4

C5

C6C7

C8

Page 9: Sternocleidomastoid Trapezius Posterior cervical triangle Identify the muscles of the neck and indicate their major actions and sources of innervation.

Trace the flow of arterial blood from the aorta through the neck including vessels that pass through the neck without branching and those that send branches to viscera and muscles of

the neck.

Two main arteries are found in the neck: Subclavian and branches and Carotid

Subclavian

Vertebral

Thyrocervical

Transversecervical

Deep cervical

Suprascapular

Ascendingcervical

Inf. thyroid

Ext. Carotid

Common carotid

Omohyoid

Digastric

Lingual

Sup. thyroidSup. laryngeal

Int. carotid

Ext. carotid

Ascendingpharyngeal

Superficial temporal

Maxillary

Facial

Post.auricular

Page 10: Sternocleidomastoid Trapezius Posterior cervical triangle Identify the muscles of the neck and indicate their major actions and sources of innervation.

Trace the pathways for venous drainage from the neck into the brachial veins.

Ext. jugularInt. jugular

Ant. jugular

Sup. thyroid

Middle thyroid

Inf. thyroid