Cochlea Flashcards by Fredrik Sjøholt Morsund

Q

Which stain is used?

A

Toludine blue

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Q

1?

A

1: cuticle

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Q

2?

A

interdental cell

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Q

3?

A

3: Vestibular lip of spiral limbus

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Q

4?

A

4: tympanic lip of spiral limbus

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Q

5?

A

5: nerve fibres

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Q

6?

A

6: osseus spiral lamina

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Q

7?

A

7: inner border cell

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Q

8?

A

8: inner phalangeal cell

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Q

9?

A

9: inner pilar cell

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Q

10?

A

10: inner hair cell

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Q

11?

A

11: outer hair cell

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Q

12?

A

12: Deiters phalangeal cells

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Q

13?

A

13: cuboidal epithelium of scala tympani

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Q

14?

A

14: Bottcher’s phalangeal cells

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Q

15?

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A

15: Claudials phalangeal cells

Q

17?

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A

17: reticular membrane (apical process of Deiters’ phalangeal cells)

Q

18?

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A

18: tectorial membrane

Q

19?

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A

19: vestibular (Reissner’s) membrane

Q

Large black star?

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A

Large black star: inner tunnel of Corti

Q

Medium black star?

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A

Medium black star: space of Nuel

Q

Smal black star?

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A

Small black star: outer tunnel of Corti

Q

Red star?

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A

Red star: Scala tympani

Q

Green star?

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A

Green star: Scala media

Blue star?

Blue star: Scala vestibuli

What is the name of the indicated structure? What type of tissue is this? What is special about the tissue in this structure? What is the function of this structure?

Stria vesticularis Stratified cuboidal epithelium Only epithelium in the human body that contains blood vessels Produces endolymph (composition similar to the ICF)

What is the name of the indicated structure? Where is it situated? Which cells/microscopical structures are found here?

Spiral ganglion Spiral canal of the modiolus Bipolar cells and myelinated nerve fibres (of the cochlear compartment of CN VIII^th)

What is the name of this structure? What type of tissue?

Vestibular (Reissner's) membrane Connective tissue layer covered by smiple squamous epthelium on both sides

Name the indicated structure What type of tissue is this? What are the border of this structure? Function?

Basilari membrane Connective tissue Terminates at the crista spiralis Supporting the organ of corti

Name the indicated structure

Organ of corti

What fluid is found within.. a) .. the three tunnels of the corti organ? b) .. cochlear duct? c) .. scala tympani and scala vestibuli?

a) Corti-lymph (similar ion content to the perilymph) b) Endolymph (ion composition similar to ICF) c) Perilymph