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Paper of Nada

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Submitted By pdotk91
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BIOL-182 Reproductive System Dr. Shawn B. Wild I. INTRODUCTION
A. Gonads

B. Gametes
1. sperm * * head * acrosomal cap (acrosome) * middle piece * tail

2. ovum * oocyte ovum after fertilization

3. meiosis

spermatogonia sperm oogonia ovum
4. fertilization
5. zygote
II. Male Reproductive System
A. Testes
1. spermatic cord * * ductus deferens * deferential artery * testicular artery * testicular vein * nerve

-inguinal canal
-inguinal hernias
2. Scrotum * tunica vaginalis * dartos muscle * cremaster muscle
3. Structure of the testes
a. tunica vaginalis
b. tunica albuginea
c. lobules
d. seminiferous tubules
e. straight tubules
f. rete testis

g. efferent ductule * epididymis h. interstitial cells – Leydig cells
i. sustentacular cells – Sertoli cells

4. Spermatogenesis * spermatogonia * 1 spermatocytes * 2 spermatocytes * spermatids * spermiogenesis * spermatozoa
B. Male Reproductive tract
1. epididymis (1)
(2)
(3)
2. ductus deferens
3. urethra * prostatic * membranous * penile
C. Accessory Glands
1. functions
2. seminal vesicles
3. prostate gland
4. bulbourethral glands

D. Semen
1. sperm count – 20-100 million/cubic milliliter
2. seminal fluid – fluid component of semen – composed of secretions from testes (5%), seminal vesicles (60%), prostate (30%), bulbourethral glands (<5%)
3. ejaculation -
E. Penis
1. external anatomy

root body glans prepuce 2. internal anatomy * corpora cavernosa – 2 – surround central arteries (1 each) * corpus spongiosum – 1 – surrounds penile urethra – expands to form glans of penis *

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