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27 Cards in this Set
- Front
- Back
Where is this?
Identify Cells A-F and their functions. |
A-Primary spermatocyte
B-spermatogonia-germ cell that is stimulated by testosterone to enter the cell cycle C-Myoid cell D-Sertoli cell-secrete inhibin, abp, nourish and protect spermatozoa, form the blood testes barrier E-Spermatid-haploid F-Leydig cell (interstitial cell) secrete testosterone (stimulated by FSH |
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Spermatogenesis:
When does it occur? Where does it occur? What is the order of maturation Where does final maturation occur? |
Puberty
Semniferous tubule Spermatogonia-->1 spermatocyte--> 2 spermatocyte--Spermatid--> Spermatozoa |
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What is the blood testes barrier and what is its purpose?
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a physical barrier between the blood vessels and the seminiferous tubules of the animal testes.
The barrier is formed by tight connections between the Sertoli cells, which are sustentacular cells (supporting cells) of the seminiferous tubules, and nourish the spermatogonia. Prevents autoimmune attacks on the cells |
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What is spermiogenesis?
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The differentiation of spermatids to spermatozoa. The sperm must develop a head with an acrosomal cap (that contains hydrolytic enzymes) a midpeice that is rich in mitochondria, and a tail.
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What is the order of tubules that the spermatozoa must traverse on their journey?
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Tubuli reti, Rete Testes, Efferent ductules, Epididymis, Ductus Deferens (vas deferens)
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Where is this? what are its characteristics
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Rete Testes-
intratesticular! recieve spermatozoa from tubuli recti, simple cuboidal epithelium |
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Where is this? What are its characteristics?
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Ductuli Efferentes
2nd in the pathway from semniferous tubules Alternating cuboidal and ciliated columnar cells Cuboidal cells absorb fluid Columnar cells beat to move the sperm |
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Where is this? what are its characteristics?
What does A point to? |
Epididymis
highly convoluted tubule with PSEUDO STRATIFIED epithelium principle cells have sterocilia that reabsorb luminal fluid, basal cells line the bottom. A-intraepithelial lymphocyte |
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Where is this? What are its characteristics?
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Vas Deferens (Ductus Deferens)
-is a thick walled muscular tube lined with Pseudostratified columnar epithelium. -3 layers of smooth muscle, inner and outer longitudinal and a middle circular layer -perform peristalsis to eject sperm into the urethra |
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Where is this and what is its function?
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Prostate gland, largest male accessory gland, pierced by the urethra and the ejaculatory duct, lining is formed by simple columnar or pseudo stratified epithelium.
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What are the three zones of the prostate, and where is it most likely to get cancer versus benign hyperplasia
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Central (urethra)
Transition (benign hyperplasia) Peripheral (adenocarnicoma) |
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Where is this and what is its function?
What are the brown lining areas called? |
Seminal Vesicle
Secretes fructose rich fluid. Located between the prostate and the posterior aspect of the bladder. Has mucosa and muscularis. Mucosa is lined by pseudostratified columnar epithelium. The brown lining areas are lipofuscin granules which are present in older men. |
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If you see a large pink dot in the middle of a prostate gland tubule, what is it?
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A corpora amylacea, which is prostatic concretion made of calcified glycoprotein, found in older men
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What is this and label A-D?
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Penis cross section.
A-Central artery B-Corpora spongiosum C-Corpora cavernosum D-Penile urethra |
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What is this?
Identify A and B |
Corpora cavernosum
A-Venous spaces B-Helicine artery |
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Where is this and what is A?
What is the function of A? |
Penile urethra-
Glands of Littre-secrete mucous that neutralizes the acidic urine |
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Where is this?
Identify A-C |
Prostate
A-Peripheral zone B-Vas Deferens C-Seminal Vesicle |
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Where does final maturation of sperm occur?
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In the uterine tubes from secretions that come from the epithelium of the mucosa of the tube
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Where do sperm gain motility?
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Epidiymus
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What is the purpose of abp?
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Sertoli cells concentrate the testosterone that is made by the Leydig cells.
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How can you distinguish the efferent ductules?
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Alternating cuboidal and columnar cells
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What lines the epididymus?
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Psuedostratified epithelium, (stereocilia=microvili)
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What distinguishes the vas deferens?
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It has 3 muscular layers
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How can you distinguish the lumen of the seminal vesicle?
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It has many folds, lipofuscin granules
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How can you distinguish the prostate?
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Corpora amylaca, columnar glands,
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Identify E-F
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E-tunica albuginia
F-Buck's Fascia G-Dorsal vein outside is the dartos fascia |
