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Summary Human Reproduction: Matric Biology

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An in-depth, simplified summary of the biology IEB topic: Human Reproduction.

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HUMAN
REPRODUCTION

, HUMAN REPRODUCTION


ASEXUAL VS SEXUAL REPRODUCTION
ASEXUAL SEXUAL

One parent Two parents

O spring genetically identical O spring genetically di erent

Mitosis Mitosis and Meiosis




MALE REPRODUCTIVE ORGANS




ff ff

, HUMAN REPRODUCTION




SCROTUM

STRUCTURE FUNCTION

Pouch-like structure - Acts as a
that contains testes temperature
regulator. Keep
testes 2* - 3* C
lower than body
temperature
(necessary for
formation of fertile
sperm)
- Protects the sperm


TESTES (TESTIS)

STRUCTURE FUNCTION

- Glandular gonads (organ that produces - Testes produce sperm (make gametes),
gametes) in the male by the germinal epithelial cells that line
- Two oval structures that are suspended seminiferous tubules
outside body in scrotum - Testes also produce testosterone (male
- Contains highly convoluted (folded) hormone) by interstitial cells
tubules lined with cells that form haploid
spermatozoa (adult sperm cell)
- Tubules are called seminiferous tubules:
- 1000 tubules in each testis
- Total length over 500m
- Enables tubules to produce
200-500 million sperm for
ejaculation
- Between tubules are groups of endocrine
cells (hormone secreting cells), called
interstitial cells

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