testicule exocrine : spermatogenese Flashcards

1
Q

cellules de la lignée germinale organisées du compartiment … à …

A

basal à la lumière obv

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2
Q

quels sont les spermatogonies = cellules souches

A

sp Ad =>
sp Ap =>
sp B

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3
Q

cellule de réserve

A

Sp Ad ⭐️⭐️⭐️

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4
Q

chromatine sp ad

A

dense ⭐️⭐️⭐️, sombre, très condensée ⭐️⭐️

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5
Q

nucléole des spermatogonies

A

proéminent

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6
Q

sp ap chromatine

A

claire ⭐️⭐️

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7
Q

sp B chromatine

A

mottée ⭐️⭐️⭐️ irrégulière ⭐️⭐️⭐️

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8
Q

taille spermatogonies

A

10-15 micromètre

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9
Q

spermatocytes I et II taille

A

25-30 micromètre

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10
Q

spermatides rondes ⭐️⭐️ puis allongées ⭐️⭐️ taille

A

6-7 micromètre

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11
Q

spermatogonies lieu

A

membrane basale des tubes séminifères ⭐️ = compartiment basal ⭐️⭐️⭐️

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12
Q

spermatocytes I et II lieu

A

compartiment ad-luminal SEULEMENT à partir du leptotene ⭐️⭐️⭐️

avant ça compartiment basal ⭐️⭐️

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13
Q

spermatides lieu

A

obv proche lumière : compartiment adluminal ⭐️⭐️⭐️

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14
Q

quelles sont les cellules de la lignée germinale les plus visibles

A

spermatocytes I

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15
Q

spermatides noyau

A

petit ⭐️ condensé ⭐️⭐️⭐️

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16
Q

spermatocytes I et II noyau

A

grand

17
Q

col du spermatozoide : lequel des centriole donne naissance à l’axoneme

A

OBVIOUSLY distal

18
Q

axoneme avec 9 … de microtubules (et ..?)

A

9 Doublets de microtubules et un Doublet central