Term
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Definition
tunica vaginalis: parietal and visceral layers
Tunica Albuginea: has mediastinum testis, thickening where epididymus attaches
Tunica Vasculosa: deep to albuginea, very vascular
speta: make 250 lobuli testis that contain seminiferous tubules and interstitial cells of LEYDIG-->synthesize testosterone |
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Term
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Definition
| tubuli recti, rete testis, ductuli efferentes, duct of epididymis, vas deferens, ejaculatory duct, urethra |
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Term
| what layer of the seminiferous tubules squeez spermatazoa up tububle and contains myoid cells? |
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Definition
| Tunica (lamina) Propria of seminiferous tubules |
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Term
| function of sertoli cells? |
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Definition
| non-replicating tall cells that go into basal and luminal compartment, supports spermatogenic cells by releasing INHIBITIN which inhibits the release of FSH, testosterone promotes spermatogenesis so testosterone will not leave testes. |
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Term
| what structure allows sertoli cells to have a basal and luminal compartment and helps to create a blood-testis barrier? |
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Definition
| Zonulla Occludens: it acts as a belt |
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Term
| list name of sperm starting from basal side |
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Definition
spermatagonia by sertoli cells
primary spermatocytes
secondary spermatocytes
spermatids
spermatozoa (closest to lumen) |
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Term
| why is the seminiferous epithelium unusual? |
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Definition
| it contains spermatogenetic cells (germ cells, gametes) and Sertoli cells (support cells) |
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Term
| what gives rise to spermatogenic cells? |
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Definition
| umbilical vesicle (yolk sac) |
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Term
| what stage differentiates spermatogonia into primary spermatocytes? |
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Definition
Spermatogonial phase:
gives rise to 46 single chromatid chromosomes 2n-2d
Type A Dark: mitosis-> type A dark or pale
Type A Pale->form more pale
Type B: mitosis to form PRIMARY SPERMATOCYTES 2n-2d
and prior to meiosis I: primary spermatocytes duplicate during s-phase of interphase to form 2n-4d |
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Term
| What occurs in Meiosis I spermatogenesis? |
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Definition
Largest cells, Primary spermatocytes, form secondary spermatocytes that have 23 double chromatid chromosomes 1n-2d
THERE IS NO DNA REPLICATION PRIOR TO MEIOSIS II
secondary spermatocytes immediately enter Meiosis II
to form spermatids forming 1n-1d |
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Term
| What is the term used to describe a spermatid transforming into a spermatozoa (sperm)? |
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Definition
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Term
| What cells are embedded in tunica vasculos between seminiferous tubules. Are endocrine cells with SER, crystals of Reinke and synthesize and secrete Testosterone, which is never stored, only secreted instantly? |
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Definition
| Interstitial cells of Leydig |
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Term
| Which genital duct is lined by sertoli cells and distally by simple cuboidal cells? |
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Definition
| Tubuli Recti: straight tubules |
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Term
| what genital duct is known as a "maze" |
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Definition
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Term
| what genital duct has SM to contract for peristaltic waves, lined by nonciliated cuboidal cell patches, and pseudostratified columnar ciliated epithelium. they also sweep spermatozoa toward the epididymis? |
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Definition
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Term
| the epididymis is lined with what type of epithelium? |
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Definition
Pseudostratified columnar: basal stem cells
and principal cells
spermatozoa are located directly in the lumen!
also have Stereocilia (non-motile) |
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Term
| what type of epithelium is in the vas deferens? |
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Definition
pseudostratified columnar epithelium with stereocilia,
has 3 muscular layers
and the ampulla is dialated end that joins with seminal vesicle to form the ejaculatory duct |
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Term
| Name the three accessory genital glands of male |
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Definition
seminal vesicles,
Prostate
Bulbourethral Cowper's glands |
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Term
| whats important about the ejaculatory duct? |
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Definition
it has No SMOOT MUSCLE
simple columnar epithelium |
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Term
| what genital gland has pseudostratified columnar epithelium, smooth muscle coat, and secretes viscous, yellow, fructose-rich fluid that is a snack for sperm |
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Definition
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Term
| the prostate gland is the largest accessory gland that has 3 tubuloalveolar glands arranged in 3 concentric layers, the mucosal layer, submucosal layer and peripheral layer, which one has the main prostatic glands? |
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Definition
the Peripheral is the largest
the smallest is the mucosal |
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Term
| what is unique to the prostate gland? |
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Definition
| Corpora Amylacea: can lead to prostatic concretions if it becomes calcified |
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Term
| Cowper's glands are found? |
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Definition
| in the bulbourethral glands |
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Term
what muscle is dorsal on the penis
and what muscle is ventral? |
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Definition
corpora cavernosa 2 dorsal
corpus spongiosum 1 ventral (also called corpus cavernosum urethrae) |
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Term
| what arteries allow a penile erection? |
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Definition
| Helicine arteries fill vascular sinuses |
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Term
learn this
spermatogonial:spermatogonis to primary spermatocyte
meiosis: primary spermatocyte to spermatid
Spermiogenesis: spermatid to spermatozoa |
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Definition
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