Human Body- Reproductive System

Labia minora

inner pieces of skin that protect only the urethra and the vagina

Clitoris

tiny, small, sensory organ, responsible for sexual stimulation

Urethra

tube connected to the bladder that releases urine

Vagina

female sex organ connected to the uterus

Uterus

the womb an unborn baby develops here

Fallopian tubes

fertilization takes place here, where the sperm and eggs meet

Ovaries

left and right ovaries that create hormones and store egg cells

Labia majora

outer pieces of skin that protect the vagina, urethra, and clitoris from bacteria (yeast infection and urinary tract infection/UTI)

Cervix

piece of skin that will grow and close the entrance of the uterus

Ovulation

when an egg leaves the ovary and enters the Fallopian tube (3-7 days)

Fertilization

when a sperm cell enters the egg cell

Note for cervix

during pregnancy, the cervix closes so the blood can’t leave and prevent the baby’s release

Note for urethra

Both genders gave a urethra

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Female

* Clitoris stays as a clitoris
* More stimulation = increases in size because millions of nerves connected to the sensory part of the brain

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Male

* Turns to a penis

Seminal vesicles

first spot where perms get food (semen)

Prostate gland

second spot where sperms get food (semen)

Bladder

holds urine

Urethra

releases urine or semen (can not do both at the same time)

Epididymis

connected to the testicle and stores mature sperm cells

Vas deferens

tube that will transport sperms around the reproductive tract

Penis

male sex organ made up of two parts: head (glands) and shaft, the head is more sensitive than the shaft but the most sensitive area is where the head and shaft meets

Scrotum

protects testicles and regulates temperature for sperm survival

Testicles

left and right that produce sperm cells and testosterone (male hormones)

Note for testicles

Dominant side would be slightly larger and the other testicle is purposed as a back up

Note for ejaculation

1. Hard/erection
2. Blood fills penis
3. Sperm grows and moves
4. Stored in the epididymis
5. Moves through the vas deferens
6. Reaches seminal vesicle where the sperm cells get semen
7. Reaches prostate where the sperm cells also get semen
8. Ejaculates through the urethra

Note on sperm survival

Sperms last 3-5 days. If the sperm is in a female reproductive system, it will last 5 days because the female reproductive system has the same temperature as the male reproductive system.

Puberty

physical and mental changes a person will go through over a period of time

Starting age

Males

* 11, 12, 13, 14, 15
* Puberty can start at any age, so it is hard to determine one constant age. Fathers or older brothers can give a gauge as to when they got their first physical attributes.

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Females

* 9, 10, 11
* Puberty can start at any age, so it is hard to determine one constant age. Mothers or older sisters can give a gauge as to when they got their first physical attributes.

Duration of puberty

Males and females

* 3-6 years

Male changes

* Hair 
* Facial 
* Armpit 
* Sweating more 
* Hair is trapping odors into bodies 
* Smells more 
* Chest  
* Pubic  
* Serotom 
* Voice (can change in 2-3 days)
* Cracks 
* Deeper 
* Height 
* Muscle growth 
* Erection - rush of blood that fills the penis to make it hard
* Ejaculation - release of semen (white fluid) with or without sperm from the erect penis