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40 Cards in this Set
- Front
- Back
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What is the tunica albunginea?
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Dense fibrous capsule that surrounds the testis
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Where are spermatozoa produced?
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Seminiferous tubules
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What are the myoid cells?
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Smooth muscles Cells that adhere to the basal lamina and help propel sperm from seminferous tubule to the rete testis
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What is the function of leydig cells?
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Synthesize testosterone
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Where are leydig cells found?
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In the interstitial tissue lying between the seminiferous tubules
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What are the gamete stem cells called in men?
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Spermatogonia
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Where are the spermatogonia located?
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Adjacent to the basal lamina
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Type B spermatogonia differentiate into what?
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Primary Spermatocytes
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What is the process by which haploid spermatids are transformed into spermatozoa?
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Spermiogenesis
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What is located over the anterior half of the sperm nucleus and will dissociate cells of the corona radiata and digest the zona pellucida of the egg
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Acrosome
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What is the syndrome characterized by immotile spermatozoa and results in infertility?
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Kartagener Syndrome
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What are the cellular charateristic of sertoli cells?
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Tall columnar epithelial cells
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What are the 4 functions of sertoli cells?
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1. Support/protect/feed developing spermatozoa
2. Phagocytoze residual bodies 3. Secrete Androgen-Binding Protein 4. Secrete Inhibin |
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What is the function of ABP?
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Binds testosertone and hydroxytestosterone
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Production of ABP is stimulated by what?
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FSH
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What is the function of inhibin?
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Suppresses FSH synthesis
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What is formed by the tight junctions between sertoli cells?
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Blood-testis barrier
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The seminiferous tubules empty into what?
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Rete Testis
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The rete testis has what extending from it?
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Ductuli efferentes
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Spermatozoa pass from the ducti efferentes to where?
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Ductus epididymis
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What happens to the sperm in the epidiymis?
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They become motile
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What conducts the spermatozoa from the epididymis to the urethra?
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The ductus (vas) deferens
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What is the role of seminal vesicles?
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Pair of glands that opens into urethra
Produce 70% of ejaculate (fructose, citrate, etc) |
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What are the 4 parts of the male reproductive systems?
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1. Testis
2. Genital ducts 3. Accessory Glands 4. Penis-copulating organ |
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The 250 lobules in the testis are created by what?
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Septae
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What process is seen in spermatagonia A?
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Mitosis
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What process is seen in spermatagonia B?
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Meiosis
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What helps to communicate between sperm?
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Cytoplasmic bridges because sperm need both chromosomes
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How can spermatagonia A be identified histologically?
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Closest to basement membrane
NO meiosis seen |
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How can spermatagonia B be identified?
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Chomratin less condensed
Can see nucleoli |
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What is seen in primary spermatocytes?
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Thread like chromatin
Chromosome aligned, exchanging DNA |
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What cells look like spermatagonia type A?
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Round spermatids
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When the spermatozoa are pushed into the lumen, what do they leave behind?
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Residual body
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What is the function of the blood-testis barrier?
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Protects more advanced stages of spermatogenesis from blood-borne products (immune systme)
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What is the function of the epididymis?
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Accumulation, storage, and maturation of sperm
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Sperm maturation in epididymus includes what 4 items?
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1. Stabilization of condensed chromatin
2. Changes in plasma membrane surface charge 3. New Surface Proteins 4. Acquisition of motility |
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The epididymus has what cell type?
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Pseudostratified epithelium
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Epididymal cells have what special structure?
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Stereocilia
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The vas deferens have what 3 layers of smooth muscle that propel sperm forward?
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1. Inner
2. Circular 3. Outer |
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The products of the prostate gland allow for what?
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Allows sperm to swim up female reproductive tract
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