Male Reproductive System Flashcards
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What are the functions of the testes?
Production of sperm and production and secretion of androgens.
What structures and physical changes help keep sperm developing at the ideal tempreture?
The scrotum and detrusor muscle that raises and lowers the scrotum.
What are the two coverings of the testes?
Tunica vaginalis and tunica albuginea
What structure (space) allows vessels and nerves tot enter and leave the testes?
Mediastinum testis
What are contained in the 250 lobules of the testes? Whare are the purposes of the sustentacular cells and germ cells?
Seminiferous tubules; support and production of sperm cells
What is the purpose of interstitial cells? Where are they located?
Production of androgens (testosterone)
Where in the testis does meiosis take place?
In the wall of the seminiferous tubules, in between sustentacular cells.
During spermatogenesis, what is the name of the first haploid cell?
Secondary spermatocytes
What cells does the second meiotic division create? How many chromosomes do they have?
Spermatids; 23
What is spermiogenesis?
The final stage of spermatogenesis where spermatids become spermatozoa.
Trace the pathway of sperm from where primordial stem cells reside to ejaculation.
Seminiferous tubules > rete testis > efferent ductules > epididymis > ductus defrens > ejaculatory ducts > prostatic urethra > membranous urethra > spongy urethra
What are the names and purposes of the 3 accessory glands to the male reproductive organs?
- Seminal vesicles - secretes a viscous alkaline solution containing frutose, prostaglandins and bicarbonate.
- Prostate gland - secretes a slightly alkaline solution containing citric acid, plasmin and Prostatic Specific Antigen (PSA)
- Bulbourethral glands - secretes a clear mucin for lubrication
What are the male external genitalia?
Penis
What are the 3 parallel erectile bodies of the penis?
Corpus cavernosum and corpus spongiosum
What role do sympathetic and parasympathetic input play in erection and ejaculation?
Point and Shoot
Parasympathetic - Erection
Sympathetic - Ejaculation
