The Reproductive System

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1

Primary Sex Organ

Testis

2

Dartos Muscler

contracts when testis become cold

3

Cremoster muscles

contracts to elevate testis closer to body when cold

4

2 Layers of connective tissue in scrotal sac

1) Tunica Vaginalis

2) Tunica Albuginean

5

Seminiferions

Where sperm is produced

6

Muscle Contraction of tubes move.....

Sperm

7

Edidymis

Temporary storage of sperm

8

interstitial endocrine cells

  • found surrounding seminiferous
  • produces testoterone (male sex hormone)
9

2 Functions of testis

1. Produce testoterone

2. Produce Sperm cell

10

testicular arteries

feed blood to testis

11

testicular veins

drain blood from testis

12

Pampiniform venous plexus

Blood going into testes is around 370C

(takes heat from testicular arteries and transfer heat to testicular veins)

13

orchiditis

inflammation of testes

(causes sterilization)

14

cryptorchidism

non descent of the testes to the scotom

(can cause testicular cancer and sterilization)

15

Glans Penis

erectile tissue is found

"Head of Penis"

16

Prepuce

surrounds glans penis

"foreskin"

17

3 parts of erectile tissue

  • corpora cavennosa
  • corpus spongiosum
18

epididymis

temporarily stored where they mature

(can store sperm for several months)

19

Semen

  • somewhat sticky
  • contains fructose that energizes sperm
  • somewhat basic(alkaline) (PH of 7.2-8.0)
20

Erections

  • arteries dilate veins constrict (more blood enters than exits)
  • Nitric oxide produced
  • Parasympathetic impulse
21

Ejaculation

Muscles contract forcing semen out of penis

Sympathetic impulse

22

Diploid (2n)

46 chromosomes

23

hoploid (n)

23 chromosome = sperm & egg cell

24

Spermatogenis

  • formation of sperm cells
  • begins at the onset of puberty
25

amount of sperm cells produced by healthy adult male daily

400 mil

26

autosomes

pairs 1-22 of chromosomes

27

sex chromosomes

Pair #23 that determines only gender

28

Daughter A

stays in place and produces more daughter B's

29

Daughter B

Moves downward to lumen (makes way through a one way gate)

30

Foreign sperm cells

considered foreign because they were not produced when the male was a fetus (not considered part of self)

31

Follicle Stimulating Hormone (FSH)

causes sperm production in testes

32

Luteinizing Hormon (LH)

stimulates interstitial cells & begins testosterone production

33

Medulla

Inside

34

Cortex

Outside

35

Wall of Seminiferous Tubule

Divided into 2 compartments

  • Basal (outer)
  • adluminal (inner)

*can only go from Basal to adluminal*