reproductive system
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reproductive system - Details
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| 🇬🇧 | 🇬🇧 |
| Gonads | Testes and ovaries |
| Produce sex cells | Gametes |
| Secrete steroid sex hormones | Androgens(males) estrogens and progesterone (females) |
| Male gametes | Spermatozoan |
| Male gonads | Testis |
| Male ducts | Seminiferous tubules,epidimymis,vas deferens , ejaculatory duct, prostetic membranous and penile urethra |
| Male glands | Seminal vescle, prostate gland, bulbourethral glans |
| Male external genitalia | Penis, scrotum |
| Male sex hormones | Testosterone |
| The scrotum temp is | 3 degress celcsius lower that core body temp, temp neccessary for sperm production |
| Testes are surrounded by what two tunics | Tunica vaginalis(peritoneum) & albuginea (fibrous capsule) |
| Sperms travers from seminiferous tubles through | Straight tubules, rete testis, efferent ducts, epididymis,vas deferens |
| Spermatic cord houses | Blood vessels, nerves, and lymoh vessels |
| Epididymis head | Contains the efferent ductules |
| Ductus deferens passes through | Inguinal canal |
| Ductus deferens expands | To form ampulla |
| Ductus deferens joins the.....to form...... | Seminal vesicle, ejaculatory duct |
| Vasectomy | Cutting and ligating the ductus deferens |
| Penis ..... urethra | Spongy |
| Penis type of tissue | Erectile tissue (spongy connective tissue & smooth muscle w/ vascular spaces) |
| Corpus spongiosum | Surrounds urethra and expands to form glans and buls |
| Corpora cavernosa | Paried dorsal erectile bodies |
| Prepuce | Foreskin |
| Urethra has three regions | Porstatic urethra, membranous urethra, spongy(penile)urethra |
| Seminal vesicles has | 70% of volume of semen |
| Duct of seminal vesicle joins the.....to form.... | Ductus deferens, ejaculatory duct |
| Prostate conatins | Prostate specific antigen(PSA) |
| Prostate plays what role | Activation of sperm |
| Pea-sized glands inferior to prostate is what | Bulbourethral glands(coupers glands) |
| Bulbourethral glands(coupers glands) neutralizes | Traces of acidic urine in urethra |
| Only how much of semen is ejaculated, conatining how much sperm | 2-5ml , 20-150 million sperm/ml |
| Parasympathetic response to erection | Enlargement and stiffening of penis from engorgement of erectile tissue w/ blood |
| Ejaculation is | Propulsion of semen from male duct system |
| What causes propulsion of semen from male duct system | Sympathetic spinal reflex |
| Spermatogenesis is and when does it start | Production of sperm in seminiferous tubles of testes, puberty |
| Most body cells in spermatogenesis are | Diploid (2n)and contain 23 pairs of homologous chromosomes |
| What are haploid cells and what does it comtain | Gametes, 23 chromosomes |
| What are mitiosis and what undergos is forming what | Germ cells , spermatogonia forming primary spermatocytes |
| Meiosis 1 | Primary spermatocytes forming secondary spermatocytes |
| Meiosis 2 | Secondary spermatocytes forming spermatids |
| Spermiogenesis | Process of spermatids change to become spermatozoans (sperm) |
| Sertoli cells (sustentacular) | Large supporting cells |
| Role of sustentacular cells | Secrete testicular fluid into lumen for transport of sperm prevent sperm antigens from escaping into blood tight junction form blood testies barrier |
| Basal compartment | Spermatogonia and primary spermatpcytes |
| Adluminal compartment | Meiotically active cells and tubule lumen |