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Notes and explanations of the human reproduction unit of grade 12 biology

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Detailed notes and explanations of the human reproductive unit of Grade 12 biology. Contain many diagrams and detailed explanations of the subject. Contain tips and key words to help remember certain details.

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Biology
reproduction

=

,CK 1.3 Human
Reproduction and
Development

, that
organ produces
gamete
Y
num

also in females
-



ex : deeper voice
·
I
broader shoulders
· adams apple


bladder
rectum

was defrence seminal
vesicle




i
# mucus


wethra
9 prostate
g (111d
-cowpers
gland
Penis
epididmis
testis
spermin testes - scrotum

, Male Reproductive System
• Testis (plural: testes) - produces sperm and testosterone.
num unm
~

+ cremaster Ie
• Scrotum – Pouch of skin that holds the testes and regulates mus
temperature. typically 1-20 bummmeal body temp : won't produce
Sperm it.wrong
temp..
• Seminiferous Tubules – coiled tubes (250 m) that make up the testes
&The lining is made up of cells undergoing meiosis to produce sperm
↑"permatogenesis


(100 million per day).① Testes are also made of interstitial cells that
secrete testosterone and Sertoli cells that nourish the sperm.
• Epididymis – a duct at the top of the testes where sperm matures
and develops the ability to be motile (flagella). They are stored here
-
until ejaculation. transports

• Ductus Deferens (Vas Deferens) - Long tube which conducts sperm
from the testes up to the prostate gland (which connects to the
urethra) during ejaculation.

Document information

Study
12th Grade
School year
1
Uploaded on
July 4, 2026
Number of pages
41
Written in
2025/2026
Type
Class notes
Professor(s)
Ms. steele
Contains
All classes
CA$3.99

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