null
US
Entrar
Registre-se gratuitamente
Registre-se
Detectamos que o JavaScript não está habilitado no teu navegador. Habilite o Javascript para o funcionamento correto do nosso site. Por favor, leia os
Termos e Condições
para mais informações.
Próximo
Copiar e Editar
Você deve estar logado para concluir esta ação!
Inscreva-se gratuitamente
1602136
Human Reproduction (IGCSE Biology)
Descrição
Reproduction in humans (male & female), puberty, and the urinogenital systems (male & female)
Sem etiquetas
igcse
biology
human
reproduction
psychology
human reproduction (igcse biology)
a level
Mapa Mental por
Emily Woods
, atualizado more than 1 year ago
Mais
Menos
Criado por
Emily Woods
aproximadamente 10 anos atrás
288
26
0
Resumo de Recurso
Human Reproduction (IGCSE Biology)
Male reproductive system
Roles
Produce male gametes, Spermatozoa (Sperm for short)
Produced in testes
Deliver gametes to the 'site' of fertilisation
Urogenital system
Merged urinary and reproductive system in males (Ureter & Bladder)
Penis becomes erect when spaces in structure fill with blood
Sperm duct (vas deferens)
Carries sperm from testis to urethra
Prostate gland
Helps produce seminal fluid (makes up 99.5% of semen, sperm make up the other 0.5%)
Urethra
Carries semen from sperm duct to tip of penis
Testis/Testicle
Made up of many coiled tubes (like balls of wool which produce sperm; cells between tubes produce testosterone)
Hormones
Pituitary gland
Produces hormones which affect other (endocrine) organs
(Endocrine= glands which secrete hormones or other products directly into the blood)
One pituitary hormone stimulates the testes to produce testosterone
Testosterone circulates in blood & stimulates secondary sex characteristics (characteristics that appear during puberty)
Facial hair develops, hair develops on chest, under armpits & pubic region
Chest broadens, muscles become larger
Voice becomes deeper (larynx /voicebox changes in shape)
Testes are stimulated to begin production of sperm
Penis becomes larger, scrotum expands to contain larger testes
Behaviour
Boys become more aggressive & territorial & attracted to girls
(Chemical messengers which are produced by glands to alter the activity of one or more specific target organs)
Male gametes (sperm)
Smaller than ova (female gametes)
Produced in huge numbers (300 000 000 per ejaculation)
Mobile- can swim by beating the flagellum (tail)
Fertilises female gamete (ovum)
Female reproductive system
Roles
Produce female gametes, Ovum (Ova as plural)
Recieve male gametes (spermatozoa) for fertilisation
Provides a 'site' for fertilisation & for development of zygote (cell that forms when a sperm fertilises an egg )
Female gametes (ova)
Produced one at a time (once monthly) by the two ovaries
Ovum travels along oviduct (Fallopian tube) towards the uterus
Fertilised whilst in oviduct/Fallopian tube
Ectopic pregnancy
When fertilised ovum is implanted in fallopian tube (instead of traveling through the tube and implanting in the uterus)
Zygote grows & develops into baby in uterus
Much larger than male gametes (sperm)
Do not move, but have large food store
Urogenital system
Urinary system
Bladder (pushed to one side)
Ureter
Oviduct/Fallopian tube
Carries ovum to uterus
Fertilisation usually occurs in first third of oviduct
Uterus/womb
Where fetus develops
During pregnancy, uterus increases in volume from 10cm3 to 5dm3 (3 = cubed)
Funnel of oviduct
Collects ovum released from ovary at ovulation
Ovary
Contains follicles which develop the ova
Produces oestrogen and progesterone
Muscular wall of uterus
Lining of uterus
Cervix (neck of uterus)
Opening of vagina
Vagina/birth canal
Recieves penis during sexual intercourse
'Way out' for baby at birth
Hormones
Pituitary gland
Produces hormones which affect other (endocrine) organs
(Endocrine= glands which secrete hormones or other products directly into the blood)
One pituitary hormone stimulates ovaries to produce oestrogen
Oestrogen circulates in blood and & stimulates secondary sex characteristics (characteristics that appear during puberty)
Breasts develop & increase in size
Nipples become larger
Hair develops in pubic region & under armpits
Hips become broader (pelvis widens & fat is deposited)
Vagina increases in size
Puberty can be delayed in extremely muscular girls (e.g. gymnasts)
Behaviour
Girls become more maternal (motherly) and attracted to boys
(Chemical messengers which are produced by glands to alter the activity of one or more specific target organs)
Anexos de mídia
male_reproductive_system (image/png)
female_reproductive_system (image/png)
Quer criar seus próprios
Mapas Mentais
gratuitos
com a GoConqr?
Saiba mais
.
Semelhante
Forms of Business Ownership Quiz
Noah Swanson
History of Psychology
mia.rigby
Types and Components of Computer Systems
Jess Peason
Biological Psychology - Stress
Gurdev Manchanda
Biology AQA 3.1.3 Cells
evie.daines
Biology AQA 3.2.5 Mitosis
evie.daines
Biology AQA 3.1.3 Osmosis and Diffusion
evie.daines
Biology- Genes, Chromosomes and DNA
Laura Perry
Biology- Genes and Variation
Laura Perry
Enzymes and Respiration
I Turner
GCSE AQA Biology - Unit 2
James Jolliffe
Explore a Biblioteca