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DNH 115
25, 33, 28, 29
| Question | Answer |
|---|---|
| What are salivary glands composed of | epithelium and connective tissue |
| What is the importance of epithelial cells in salivary glands | line the ducts and produce the saliva |
| What is the importance of the connective tissue | surrounds the epithelial cells |
| what is the outer part that surrounds the epithial cells called | a capsule |
| What does the connective tissue divide the gland into | lobes |
| The connective tissue that divides is called | septa or septum |
| What tissue contains nerves and blood supply that supports each gland | connective tissue |
| What is the acini | secretory cells that are found in grape like clusters |
| what type of cells are the acini made up of | a single layer of cuboidal epithelial cells |
| how does acini secrete | merocrine process |
| where do the base of the secretory cells rest | basement membrane |
| what lays on top of the lumen where the saliva travels out of the ducts | lumen |
| what is a lumen | a hole or passageway |
| What is another word for myoepithelial cells | basket cells |
| what partially surrounds the acini/ducts and contracts to move saliva in the lumen out into the ducts? | myopeithelial cells |
| What is the basic function of mucus | coats surfaces barrier lubracant |
| Serous acini | watery amylase narrow lumen cells are pyramidal round nucleus close to base |
| mucous acini | pyramidal flat nucleus cloudy cytoplams wider lumen carboyhydrate rich |
| seromucous | mixed product half moon clusters (serous demilune) secrete product between cell walls of the mucous cells they surround |
| Intercalated ducts are lined with | single layer cuboidal epithelial |
| striated ducts are lined with | single layer of columnar epitheial |
| excretory ducts are lined with | lined with pseudostratified squamous epithelium |
| What is the purpose of intercalated ducts | directly drain the acini carry secretions unchanged add lysozyme and lactoferrin |
| what is the purpose of straited ducts | modify secretions by absorbtion atp water pump and ions aldostrerone sodium leaves potassium comes chlorine leaves with soidum bicarbnate comes in with potassium |
| Where are intralobular ducts found | within in lobes intercalated and striated |
| where are interlobular ducts | between the lubules most non striated large |
| saliva formation | 1. formed in the er and packaged by golgi app- goes to cytoplasm and accumlates at the apical end of cell 2. parasympatheic NS stimulated, granules fuse to membrane, relase into lume 3. intercalted-straited intra- striated inter- excratory ducts |
| example of exocrine gland | ducts, salivary |
| endocrine | blood stream, pituatary thyroid |
| Salivary (merocrine) | operate exocrine, no cytoplams is lost |
| holocrine | secrete into cytoplasm, release when cell explodes |
| apocirne | pinch off their apical cell and lose cytoplasm, secrete membrane bound vsicle into lumen- found in armpits |
| simple tubular gland | straight tube |
| compound tubularalveolar | numerous levels of branching (salivary) |
| Saliva contains | immunoglobulins, minerals, electroyltes, buffers, ezyme and metabolic waste |
| mucous acini contains | sublingual, water, inorganic mix of sodiu.m, potassium, and chloride |
| CNS | brain and spinal cord |
| PNS | ANS sensory and somatic |
| What does ANS control | body functions with out conscious control |
| Two parts of ANS | parasympathetic and sympathetic |
| Example of parasympathetic | rest and digest; stimulates salivation in major and minor glands |
| Example of sympthetic | fight or flight- decreases blood flow, decreases saliva productions |
| factors that decrease saliva rate | sypathetic nervous system, medications, disease, age |
| function of ph in saliva | ph buffer, restance to decay, mouth is slightly acidic |
| What is the precentage of saliva production from the three major glands? | 90 |
| what is the percentage from the minor glands | 10 |
| parotid | serous largest 2 lobes (superficial/deep) on surface of massater muscle behind ramus 25% C7 cn 9, cn5 enters through stensons |
| submandibular | serous and mucus (mostly seruous) below and toward post. mand ontop of mylohyoid shaped like U wartons duct second largest 60-65 % chroda tympani CN7 facial |
| sublingual | mostly mucus |
| condition that affects parotid | mumps |
| glands at base of of circumvalle papilla | von ebner |
| what affects submanidbular gland | salivary stone |
| Four paired muscles of mastication | masseter, lateral pterygoid, medial pterygoid, temporal |
| neumonic for muscles of mastication | Mom Let Me Talk |
| suprahyoid mucles | Mylohyoid geniohyoid stylohyoid digrastric |
| neumonic for suprahyoid | my gravy spoon darling` |
| infrahyoid | omohyoid, sterno hyoid, sternotheyroid, thyrohyoid |
| neumonc for infrahyoid | TOSS |
| Cranial nerve for muscles of mastecation | CN5, 3rd branch |
| blood supply for mucles of mastecation | external carotid artery |
| Orgin and insertion for masseter | zygomatic arch (superficial), insertion- andgle of mandible lateral side |
| Origin and insertion for temporal/temporalis | temporal fossa/coronoid process |
| Orgin and insertion for medial pterygoid | medial side of lateral pterygoid plate and the fossa as well as the paltine bone, angle of mandible on medial side |
| what does the masseter muscle do | contraction, elevates manidble |
| what does temporal muscle do | elevates, pulls backwards, retrudes manible |
| what does medial pterygoid o | elevations of mandible |
| lateral pterygoid | |
| the geniohyoid muscle is superior to | mylohyoid muscle |
| the stylohyoid has what muscle passing through it | digastic |
| the omohyoid tendon lies to deep to | sterocleidomastoid |
| the sternohyoid muscle lies superficial to | sternothyroid muscle |
| TMJ anatomy | condyle foss synovial joint articulator disc capsul |
| ligaments of TMJ | lateral (outside) stylomandibular (inside medial) sphenomandibular (inside medial) |
| thre parts of articular disc | posterior band intermediate zone anterior band |
| where is the retrodical pad | posterioer to the joint |
| superior lamina | elastic fibers |
| inferior lamina | collagenous non elastic fibers |
| TMJ cranial nerve | CN5- 3rd branch |
| structure of mandibular condyle | hammerhead lateral pole medial pole |
| how the fibers of superior head of lateral pterygod muscle inserts into the articular disc | on the anterior surface of the articular disc/ fibers of the superior head of latereral penetrate though the capsul to insert into the articular disc |
| rotational movment takes place in which cavity | lower synovial |
| gliding or translation begins | when the disc moves along the posterior slope of the articular eminance /tuberosity of the temporal bone |
Created by:
kbowman12
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