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Male Reproductive System Male Reproductive System

Male Reproductive System - PowerPoint Presentation

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Uploaded On 2020-06-16

Male Reproductive System - PPT Presentation

Function of the Male Reproductive System To produce sperm cells male reproductive cells Begin producing sperm around 1215 yrs old Puberty development and maturation of the reproductive system ID: 779396

semen sperm cells reproductive sperm semen reproductive cells penis male function body ejaculation fluid prostate gland location component scrotum

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Presentation Transcript

Slide1

Male Reproductive System

Slide2

Function of the Male Reproductive System

To produce sperm cells (male reproductive cells)

Begin producing sperm around 12-15 yrs old

Puberty

- development and maturation of the reproductive system

Hair develops (pubic region, underarm, arms, legs, chest, face) widening of the shoulders and chest, deepening of the voice, skin oiler, acne develops, increased perspiration, body odor, growth spurt, Adam’s Apple protrudes, testicles drop

Slide3

External

1.

Testes or Testicles

– male sex glands

a. Functions (1) to manufacture the male sex hormone

testosterone

(2) Produce reproductive cells

 sperm  which is produced in the

seminiferous

tubules

Can produce (roughly) up to 100 million sperm in one day

This number slightly deceases with age

Slide4

Testicle or

Teste

Slide5

Scrotum

– the sac that hangs outside of the body that holds the testes

a. Function –(1) regulates body temperature and (2) protection of the testes

As body temperature increases – the scrotum will hang lower

As body temperature decreases – the scrotum will contract towards the body

Will draw up close to the body during arousal

Slide6

Scrotum

Slide7

Epididymis

a. Function - where sperm cells are stored for 64 days until mature

So what does this mean? The sperm cells that are in your semen “tonight” were produced 2 months ago

b. Location – top to the back of each testicle

Coiled structure – when uncoiled it will stretch to 20 feet in length

Slide8

Epididymis

Slide9

Penis

– the male sexual reproductive organ

a. Functions (1) reproduction (2) pleasure (3) elimination of wastes; urine and semen

b. 2 States

1. Erect – hard state

Also known as an

errection

Caused by an increases blood flow to the penis

The spongy tissues in the penis fill with blood making it longer, larger, and harder

Often followed by an

ejaculation

– release of semen from the penis

1 ejaculation = about 1 teaspoon of fluid

200-500 million sperm cells in 1 ejaculation

Semen can be released during the soft state

 pre ejaculation

2. Flaccid – soft state

Also known as the resting state

Slide10

Slide11

Glans

– tip or head of the penis

Most sensitive **

Shaft – the base or length of the penis

Foreskin – excess skin at the

glans

of the penis

Shaft

Slide12

Internal

Vas Deferens

– long tube that connects the

epididymis

with the urethra

Function – passageway and connecter

a. Lined with cilia to move sperm along

18 inches long if extended

Slide13

Slide14

Seminal Vesicles

– fluid filled pouches

Location – found on both sides of the prostate

Function – (1) fluid helps make the sperm mobile and (2) provides nourishment to sperm cells

Sugary fructose substance; source of energy to make the cells

* is a component of semen

Slide15

Slide16

Prostate Gland

Location – lies below the bladder and surrounds the urethra

About the size of a chestnut

Function – secretes a milky, alkaline fluid that mixes with sperm

* is a component of semen

Slide17

Slide18

Cowper’s Gland

Location – directly below the prostate

About pea sized

Function – secretes a clear, sticky fluid to allow a safe passageway for sperm

* is a component of semen

Slide19

Slide20

Urethra

– tube that travels through the center of the penis that is a passageway

for semen

and urine (not at the same time)

Urinary Bladder

– holding area for urine

Slide21

Slide22

So what makes up semen?

Fluids from:

1. Seminal Vesicles

2. Prostate Gland

3.

Cowper’s Gland

And the most important component:

4. Sperm Cells

Contains 23 chromosomes

Slide23

Schedule of Events to Come

Today – complications and concerns

Vocabulary and reproductive paragraph

Friday – review and classwork assignments

Monday – reproductive BINGO

All male work due

Tuesday – reproductive Hot Potato

Wednesday – Male and Female Reproductive Systems Test!

Know locations on diagrams

and functions

Slide24

Complications & Occurrences

Sterility

– the inability to reproduce

Sperm is weak, malformed, sparse, non-existent, unable to join with an ovum

Caused by: a birth defect, exposure to extreme temperatures, exposure to chemicals, exposure to high amounts of radiation, smoking, STIs,

vasectomy

, and injury

Vasectomy – permanent procedure of sterilization, sealing the vas deferens so sperm cells cannot join with the fluids to make semen. Incisions made into testicles

In office procedure

Cost effective

Slide25

Slide26

“Blue Balls”

– the term referring to testicular aching that may occur when the blood that fills the vessels within the penis during sexual arousal, is not dissipated by an orgasm/ejaculation

Testicular Cancer

Signs – swelling, small hard lumps, possible pain in the testicle region

Affects males usually around the ages of 15-34 yrs

Unknown causes – linked to exposure to chemicals, HIV +, genetics

Responsible for 12% of Cancer deaths

White males 5x more likely to get then any other race

Slide27

Prostate Cancer

Signs – pain in the lower abdomen and frequent urination

Detection – Rectal exam

Affects males 50+ yrs

No known cause – linked to hereditary, male genetic flaws, diet high in animal fat

Targets African American Men

2

nd

leading cause of death of men

Slide28

Nocturnal Emission – aka “wet dream”

An ejaculation that occurs during sleep

Uncontrollable, unpreventable, subconscious