Anatomy salivary gland

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a natomy,histology & physiology of salivary glands Biju.P.R

Introduction <ul><li>Salivary Gland is any cell or organ discharging a secretion into the oral cavity. </li></ul><ul><ul><...

a natomy of salivary glands

Parotid Gland <ul><li>Largest </li></ul><ul><li>Average Wt - 25 gm </li></ul><ul><li>Irregular lobulated mass lying main...

Parotid Capsule <ul><li>Derived from investing layer of deep cervical fascia. </li></ul><ul><li>Superficial lamina-thick, ...

External Features <ul><li>Resembles an inverted 3 sided pyramid </li></ul><ul><li>Four surfaces </li></ul><ul><ul><ul><li>...

Relations <ul><li>Superior Surface </li></ul><ul><ul><ul><li>Concave </li></ul></ul></ul><ul><ul><ul><li>Related to </li...

<ul><li>Superficial Surface </li></ul><ul><ul><ul><li>Covered by </li></ul></ul></ul><ul><ul><ul><ul><li>Skin </li></ul><...

<ul><li>Posteromedial Surface </li></ul><ul><ul><li>Related </li></ul></ul><ul><ul><ul><ul><li>to mastoid process with st...

Borders <ul><li>Anterior border </li></ul><ul><ul><li>Separates superficial surface from anteromedial surface. </li></ul><...

<ul><li>Posterior Border </li></ul><ul><ul><li>Separates superficial surface from posteromedial surface </li></ul></ul><ul...

S tructures within Parotid Gland <ul><ul><li>External carotid A </li></ul></ul><ul><ul><li>Retromandibular Vein </li></...

<ul><li>Facial Nerve trunk lies approximately 1 cm inferior and 1 cm medial to tragal cartilage pointer of external acoust...

Parotid Duct <ul><li>ductus parotideus; Stensen’s duct </li></ul><ul><li>5 cm in length </li></ul><ul><li>Appears in the ...

<ul><li>At the anterior border of masseter it pierces </li></ul><ul><ul><ul><li>Buccal pad of fat </li></ul></ul></ul><ul>...

Surface anatomy of Parotid Duct <ul><li>Corresponds to middle third of a line drawn from lower border of tragus to a point...

Blood supply <ul><li>Arterial </li></ul><ul><ul><ul><li>Branches of Ext. Carotid A </li></ul></ul></ul><ul><li>Venous </li...

N erve Supply <ul><li>Parasymapthetic N </li></ul><ul><ul><ul><ul><ul><li>Secretomotor via auriculotemporal N </li></ul></...

Submandibular Salivary Glands <ul><li>Irregular in shape </li></ul><ul><li>Large superficial and small deeper part contino...

<ul><li>Capsule </li></ul><ul><ul><li>Derived from deep cervical fascia </li></ul></ul><ul><ul><li>Superficial Layer is at...

<ul><li>Relations </li></ul><ul><li>Inferior - covered by </li></ul><ul><ul><ul><ul><li>Skin </li></ul></ul></ul></ul><ul...

<ul><li>Medial surface </li></ul><ul><ul><ul><li>Anterior part is related to myelohyoid muscle,nerve and vessles </li></ul...

<ul><li>Deep part </li></ul><ul><ul><ul><li>Small in size </li></ul></ul></ul><ul><ul><ul><li>Lies deep to mylohyoid and s...

<ul><li>Submandibluar duct </li></ul><ul><ul><ul><li>Whartons duct </li></ul></ul></ul><ul><ul><ul><li>5 cm long </li></ul...

Blood Supply <ul><li>Arteries </li></ul><ul><ul><li>Branches of facial and lingual arteries </li></ul></ul><ul><li>Veins <...

<ul><li>Nerve Supply </li></ul><ul><ul><li>Branches from submandibular ganglion, through which it receives </li></ul></ul>...

Sublingual Salivary Glands <ul><li>smallest of the three glands </li></ul><ul><li>weighs nearly 3-4 gm </li></ul><ul><li...

<ul><li>Relations </li></ul><ul><ul><li>Above </li></ul></ul><ul><ul><ul><ul><li>Mucosa of oral floor, raised as sublingua...

<ul><ul><li>Lateral </li></ul></ul><ul><ul><ul><ul><li>Mandible above the anterior part of mylohyoid line </li></ul></ul><...

<ul><li>Duct </li></ul><ul><ul><ul><li>Ducts of Rivinus </li></ul></ul></ul><ul><ul><ul><li>8-20 ducts </li></ul></ul></ul...

<ul><li>Blood supply </li></ul><ul><ul><ul><li>Arterial from sublingual and submental arteries </li></ul></ul></ul><ul><ul...

Embryology <ul><li>Salivary glands develop as outgrowths of buccal epithelium </li></ul><ul><li>Parotid – ectodermal in...

h istology

<ul><li>Compound Tubuloalveolar glands </li></ul><ul><li>Structure </li></ul><ul><ul><ul><li>Closely packed acini or alveo...

<ul><li>Cells lining the alveoli </li></ul><ul><ul><li>Serous or mucous </li></ul></ul><ul><li>Serous </li></ul><ul><ul>...

<ul><li>Parotid </li></ul><ul><ul><li>Serous type </li></ul></ul><ul><li>Sublingual </li></ul><ul><ul><li>Mucous </li></ul...

<ul><li>Ducts </li></ul><ul><ul><ul><li>Secretions pass through a system of ducts </li></ul></ul></ul><ul><ul><ul><li>Smal...

<ul><li>Myoepithelial cells </li></ul><ul><ul><ul><li>Present in relation to alveoli and intercalated ducts </li></ul></ul...

physiology

<ul><li>Main function of Salivary Gland-secretion of saliva </li></ul><ul><li>Daily secretion -800 to 1500 ml </li></ul><u...

Saliva Compositon Water (99.5%) Solid (0.5%) Organic Inorganic Ptyalin Mucin Lysozyme IgA Lactoferrin Na+ K+ Ca+ Cl- HCO3 Mg

<ul><li>Ionic Composition </li></ul><ul><ul><li>Saliva in the acini-isotonic with plasma </li></ul></ul><ul><ul><li>Under ...

Functions of Saliva <ul><li>Keep the mouth moist </li></ul><ul><li>Aids in swallowing </li></ul><ul><li>Aids in speech </l...

Salivary Families Anti- Bacterial Buffering Digestion Mineral- ization Lubricat- ion &Visco- elasticity Tissue Coating Ant...

<ul><ul><li>Under neural control </li></ul></ul><ul><ul><li>Mainly by parasympathetic signals from </li></ul></ul><ul><ul>...

<ul><li>Parasympathetic stimulation- </li></ul><ul><li>profuse secretion of watery saliva </li></ul><ul><li>Sympathetic s...

<ul><li>Salivatory nuclei are excited by </li></ul><ul><ul><ul><li>Taste and tactile stimuli from tongue and other areas ...

<ul><li>thank you </li></ul>

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