AN SC 431W Male Anatomy
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15 terms
Terms | Definitions |
|---|---|
 what covers the spermatic cord, testes, & epididymis? | tunica vaginalis |
| 3 layers of the tunica vaginalis (from outside to inside) | 1. parietal 2. visceral 3. tunica albuginea |
| internal structure of the testes (4) | 1. interstitial tissue has Leydig cells, blood vessels, nerves, & lymphatics 2. contains seminiferous tubules 3. rete testis → secretory; concerned with fluid transport → within the mediastinum testis 4. mediastinum testis → tissue surrounding the rete testis |
| anatomical location of the epididymis | connects the testes to the vas deferens |
| regions of the epididymis (3) | 1. caput (head) → U-shaped 2. corpus (body) 3. cauda (tail) → where most mature sperm are found |
| spermatic cord: 1. composed of... 2. surrounded by... | 1. testicular artery & veins → components of the pampiniform plexus 2. external cremaster muscle |
| characteristics of the vas deferens (3) | 1. very pronounced in man, but essentially absent in domestic animals 2. ampulla = thickening of the wall just as the ductus approaches the pelvic urethra 3. colliculus seminalis = common collection site for the contents of the ampulla (vas deferens) & the vesicular glands/seminal vesicles |
| accessory sex glands (3) | 1. vesicular glands/seminal vesicles 2. prostate gland 3. bulbourethral glands (cowper's glands) |
| prostate gland consists of... | corpus prostate & disseminate prostate |
| location of vesicular glands | lateral to ampulla & dorsal to neck of the bladder |
| location of bulbourethral glands | paired; on either side of the pelvic urethra |
| muscles associated with the urethra (2) | 1. urethral muscle 2. bulbospongiosus muscle |
| parts of the penis (3) | 1. root/bulb 2. shaft/body 3. glans penis |
| tissues contained within the penis (2) | 1. corpus cavernosum 2. corpus spongiosum → directly around the urethra |
| muscles associated with the male reproductive tract (5 + 4 functions) | 1. external cremaster muscle → aids in thermoregulatory control of testes & reflexively draws testes close to body in response to external stimuli 2. urethral muscle → empties pelvic urethra 3. ischiocavernosus muscle → prevents the return of blood from the penis 4. retractor penis muscle → retracts the penis into the sheath after erection or ejaculation 5. bulbospongiosus muscle |
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