Male Reproductive System

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acrosome

isolated sperm

flagellum

isolated sperm

head of sperm

isolated sperm

midpiece of tail

isolated sperm

nucleus

isolated sperm

mitochondria - provides ATP to move the spermatozoa

isolated sperm and function

endocrine

The ---(1)--- function involves the ductless secretion of testosterone.

exocrine

The ---(1)---- nature of the male reproductive system is the secretion of gametes through ducts or tubules.

testes

The gamete-producing structures of the male reproductive system are the ---(1)---

1 corpus spongiosum and 2 corpus cavernosum

The penis contains three cylinders of erectile tissue, what are they?

35 degrees C

The production of sperm must occur at what temperature?

epididymis

The sperm travel from the rete testis into the ---(1)---, where they are stored and mature.

frenulum - richly supplied with nerve endings

black arrow

bulb - extension of corpus spongiosum

16

ejaculatory duct

16

root

16 and 17

16. dartos muscle Function - smooth muscle that lines the scrotum and contracts when the testes are cold, thus bringing them closer to the body. When the environment around the testes is warm, the dartos muscle relaxes and the testes descend from the body to cool.

16 and function

crus - extension of corpus cavernosum

17

prostate gland

17

bulbourethral gland

18

corpus spongiosum

18

corpus cavernosum

19

dorsal artery

2

2. cremaster muscle Function - cluster of skeletal muscle attached to the testes and they contract to bring tests up to warm them and relax to lower testes.

2 and function

spermatic cord (cremaster muscle (1), testicular artery (2), ductus deferens (3), pampiniform plexus (4) also contains testicular nerves)

2-5

urethra

20

prostatic urethra (urethra that passes through prostate gland (#2))

3

root of penis

3

testicular artery and veins wrapped around it

3

corpus cavernosum

4

ductus (vas) deferens

4

ductus deferens

4

membranous urethra - (as the prostatic urethra exits the prostate gland it becomes the membranous urethra)

4

rete testis

4

body of epididymis

5

shaft of penis

5

secondary spermatocyte

5 - Histology of the Testis

corpus cavernosum

6

tail of epididymis

6

spermatids

6 - Histology of the Testis

corpus spongiosum

7

spermatic cord

7

spermatozoa

7 - Histology of the Testis

blood vessels and nerves

8

epididymis

8

spongy urethra

8

urethra

8

corpus spongiosum

9

glans of penis

9

prepuce

9

seminiferous tubule

9

seminal vesicle

15

seminal fluid

---(1)--- consists of secretions from the seminal vesicles, prostate gland, and bulbourethral glands.

semen

---(1)--- consists of seminal fluid plus spermatozoa

dorsal vein

1

head of epididymis

1

interstitial cells

1 - Histology of the Testis

1. bulbourethral glands 2. adds a lubricant to spermatozoa

1. name #15 2. function #15

deep artery

10

prepuce

10

testes

11

prepuce

12

scrotum

12

glans

13

ampulla of ductus deferens

14

primary spermatocytes (divide by meiosis to form secondary spermatocytes)

Histology of the Testis

seminiferous tubules - where spermatozoa are produced

Histology of the Testis

spermatogonia - (outer row of cells, reproduce by mitosis to produce primary spermatocytes)

Histology of the Testis

spermatozoa

Histology of the Testis

1. interstitial cells 2. testosterone

Histology of the Testis - What cell is highlighted and what does it produce?

true

True/False - The testes are considered mixed glands in that they have both an exocrine and an endocrine function.

1. prostatic urethra 2. membranous urethra 3. spongy urethra

What are the three regions of the male urethra?

Adds buffering fluid to spermatozoa

What is the function of the prostate gland? (#2)

gland that adds fluid to spermatozoa

What is the function of the seminal vesicle (#15)?


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