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I). Sperm travel:

Testes

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Epididymis

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Ductus deferens

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Urethra

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Penis

II). Scrotum

A). Sac outside of abdominal cavity.

B). Function:

 

C). Spermatic Cord:

 

    Sensory nerve fibers located in the spermatic cord transmit pain impulses.

 

III). Testes (single testis)

A). Function:

B). Divided into 200-300 wedge shaped lobules.

    Testes and ovaries are from the same tissue

 

C). Seminiferous tubules:

Cells specialties

1). Leydig cells

2). Spermatogenic cells

D). Testis

	Seminiferous tubule
	Sperm Cells
	Developing spermatogonia
	Interstitial cells

V). Duct System

A). The seminiferous tubules converge

Seminiferous tubulesÞ

tubulus rectusÞ

rete testisÞ

efferent ductulesÞ

epididymis

B). Epididymis:

During ejaculation the smooth muscle wall of the epididymis contract expelling sperm into the ductus deferens

 

	Sperm Cells
	Epithelial cells
	Interstitial cells
	Cilia

 

C). Ductus Deferens or Vas Deferens

• Runs from the epididymis into the pelvic cavity and loops over the ureter.
• Joins with seminal vesicle to form ejaculatory duct.
•  Ductus Deferens propels sperm into the urethra.

D). Urethra

regions:

1). Prostatic urethra:

2). Membranous urethra:

3). Spongy urethra:

 

V). Penis

A). Function:

B). Structure: external

 

• Root
• Shaft
• Glans penis

	external urethral opening
	prepuce or foreskin

C). Structure: internal

1). Spongy urethra

2). Erectile tissue:

a). Corpus spongiosum forms the bulb of the penis and the glans.

b). Corpus cavernosa paired erectile tissue.

*tunica albuginea is the surrounding connective tissue.

D). Histology

http://biology.clc.uc.edu/fankhauser/Labs/Anatomy_&_Physiology/A&P203/Reproductive_Tract_Histology/

• corpus cavernosa
• corpus spongiosum
• urethra

 

IV). Accessory Glands

A). Seminal Vesicles:

Found:

Function:

(Male urethra & Female reproductive tract are acidic—prevents infection)

Joins ductus deferens where sperm and seminal fluid mix in the ejaculatory duct.

B). Prostate Gland

Found:

Function:

Joins at the prostatic urethra

C). Bulbourethral Glands (Cowper’s Glands)

Found:

Function:

D). Sperm

http://weboflife.nasa.gov/currentResearch/currentResearchBiologyGravity/floatingFertility.htm

http://www.syndel.com/spawning/sex_on_the_farm_37.html

	head
	tail
	midpiece