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histo/embry unit 2
Reproduction and embryology
9
Biology
Professional
09/10/2009

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Term
tunica albuginea
Definition
dense connective tissue capsule surounding testis
Term
mediastinum testis
Definition
septae of CT that divide each testis into about 250 lobules (posteriorly; from tunica albuginea)
Term
Leydig cells
Definition
secrete testosterone; large, eosinophilic, prominent nucleolus; abundent sER; mito - tubulovesicular cristae;
Term
tunica propria
Definition
surounds indiv. seminiferous tubule; DCT; contractile myoid cells
Term
spermatogonial phase
Definition
production of spermatocytes by spermatogonial cells
Term
spermatocyte phase
Definition
meiotic divisions of spermatocytes reduce the DNA content to one copy per cell
Term
spermatid phase
Definition
the differentiation of the (not-quite) mature sperm
Term
Sertoli cells
Definition
stimulated by: testosterone from Leydig and follicle stimulating hormone from adenohypophysis; negative feedback controls hypothalamo-pituitary axis by releasing the hormone inhibin
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