PAROTID GLAND

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A PPT OF PAROTID GLAND FOR MEDICAL SUDENTS

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PAROTID GLAND : 

PAROTID GLAND DR SURAJIT KUNDU SR. LECTURER DEPT. OF ANATOMY MAITRI INSTITUTE OF DENTAL SCIENCES ANJORA, DURG, CHHATTISHGARH

Slide 2: 

The Major Salivary Glands Parotid Submandibular Sublingual The Minor Salivary Glands Salivary Glands

INTRODUCTION : 

INTRODUCTION LARGEST SALIVARY GLAND SITUATED IN THE PAROID SPACE WHICH IS BOUNDED BY ANTERIORLY- POST. BORDER OF RAMUS OF MANDIBLE POSTERIORLY- MASTOID PROCESS & STERNOMASTOID MUSCLE SUPERIORLY- EXTERNAL ACOUSTIC MEATUS INFERIORLY- POST. BELLY OF DIGASTRIC MEDIALLY- STYLOID PROCESS WIH ITS ATTATCHMENTS

Slide 4: 

Salivary Glands

PAROTID GLAND : 

PAROTID GLAND

FEATURES : 

FEATURES TYPE- SEROUS (WATERY SALIVA) SHAPE- INVERTED CONE SHAPED COVERINGS- HAS 2 COVERINGS OUTER FALSE CAPSULE- FORMED BY INVESTING LAYER OF DEEP CERVICAL FASCIA- KNOWN AS PAROIDOMASSETERIC FASCIA- THIS IS THICK TENSE & TOUGH INNER TRUE CAPSULE- FORMED BY FIBRO- AREOLAR ELEMENTS OF THE GLAND

PARTS : 

PARTS APEX BASE UPPER SURFACE SURFACES BORDERS SUPERFICIAL/ LATERAL ANTERO- MEDIAL POSTERO-MEDIAL ANTERIOR POSTERIOR MEDIAL

RELATIONS : 

RELATIONS

RELATIONS : 

RELATIONS

RELATIONS : 

RELATIONS

RELATIONS : 

RELATIONS

RELATIONS : 

RELATIONS

STRUCTURES WITHIN THE GLAND : 

STRUCTURES WITHIN THE GLAND FROM SUPERFICIAL TO DEEP NERVES – SUPERFICIAL NERVOUS PLANE VEINS – INTERMEDIATE VENOUS PLANE ARTERY – DEEP ARTERIAL PLANE

PAROTID DUCT : 

PAROTID DUCT KNOWN AS STENSEN’S DUCT LENGTH – 5CM CARRIES SALIVA TO THE ORAL CAVITY COURSE FORMS BY THE UNION OF SMALLER DUCT FROM THE GLAND, RUNS ON THE MASSETER MUSCLE & BENDS AT THE ANTERIOR BORDER OF THE MUSCLE & PIERCES SUCCESSIVELY BUCCAL PAD OF FAT, BUCCOPHARYNGEAL FASCIA & BUCCINATOR MUSCLE. AGAIN BENDS & FINALLY EMERGES INSIDE THE ORAL CAVITY AT THE CROWN OF THE UPPER 2ND MOLAR TOOTH

BLOOD SUPLY : 

BLOOD SUPLY FROM THE BRANCHES OF THE EXTERNAL CAROTID ARETERY VEINS DRAINS INTO RETROMANDIBULAR VEIN & EXTERNAL JUGULAR VEIN LYMPHATICS DRAIN INTO PAROTID GROUP OF LYMPH NODES & CERVICAL GROUP OF LYMPH NODES

Slide 18: 

Blood supply- Arteries The common carotid runs upwards in the neck to the upper border of the thyroid cartilage. Then it divides into external an internal carotid arteries.

NERVE SUPPLY : 

NERVE SUPPLY PARASYMPHATHETIC SUPPLY – PRODUCES WATERY SECRETION PAHWAY – PREGANGLIONIC FIBRES START FROM INFERIOR SALIVATORY NUCLEUS- 9TH NERVE- TYMPANIC BRANCH- TYMPANIC PLEXUS- LESSER PETROSAL NERVE- OTIC GANGLION- POSTGANGLIONIC FIBRES- AURICULOEMPORAL NERVE- PAROTID GLANDAL SYMPHETIC GANGLION SYMPTHETIC SUPPLY – PRODUCES MUCOUS SECRETION FIBRES COME FROM SUPERIOR CERVICAL SYMPATHEIC GANGLION SENSORY – FROM BRANCHES FROM AURICULOTEMPORAL NERVE

APPLIED ANATOMY : 

APPLIED ANATOMY PAROTID SWELLINGS ARE VERY PAINFULL – DUE TO THE PRESENCE OF THICK, TOUGH PAROTIDO-MASSETERIC FASCIA PAROITIS- INFLAMMATORY SWELLINGS OF PAROTID GLAND – IMPROPER ORAL HYEGINE- SIALEDINITIS MUMPS SIALOLITHIASIS- SALIVARY GLAND STONE/ CALCULI FREY’S SYNDROME PAROTID GLAND TUMOR- BENIGN/MALIGNANT PAROTIDECTOMY – SURGICAL REMOVAL OF PAROTID GLAND – FACIAL NERVE SHOULD BE PRESERVED SIALOGRAPHY

Sialadenitis : 

Sialadenitis Acute infection more often affects the major glands than the minor glands1

Sialography : 

Sialography Disadvantages: irradiation dose pain with procedure poss.perforation infection dye reaction push stone further contraindicated in active infection.

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