Human Reproduction - Structures Flashcards
Structure of male reproductive system
Inside:
Testes, Epididymis, Sperm duct, Seminal Vesicle, Prostate gland, Bulbourethra gland, Urethra
Outside:
Penis, Scrotal sac
Role of internal organs - male
Testes: produce sperm + testosterone
Epididymis: Store + transport sperm to duct - allow sperm to mature
Sperm duct: carry sperm to urethra
Seminal vesicle: produce fluid for sperm = semen, pH buffer (vagina acidic)
Prostate gland: provide nutrient to sperm, provide enzyme to aid survival
Bulbourethra gland: lubricate urethra + neutralise urine
Urethra: allow semen to release
Role of external organ - male
Penis - Contain erectile tissue, become rigid when blood
Scrotal sac - sac containing testes
-muscle can contract or relax to get near body
-body temp too high for immature sperm
Female reproductive system - structure
Ovaries: produce egg cells + produce hormone
Fallopian tube: carry egg from ovaries to uterus
Uterus: for baby, allow sperm to reach ovaries
Endometrium: allow placenta to form
Myometrium: muscle surround uterus
Cervix: connect vagina + uterus
Vagina: sex
Male reproductive organ diagram
https://resource.download.wjec.co.uk/vtc/2020-21/el20-21_1-1/images/eng/4.1_human_reproduction_image_1.png
Female reproductive organ diagram
https://resource.download.wjec.co.uk/vtc/2020-21/el20-21_1-1/images/eng/4.1_human_reproduction_image_2.png
Hormone secreted for male + female puberty
GnRH by anterior pituitary gland
Leydig cell + Sertoli cell
Both in testes
Leydig - secrete testosterone, when GnRH released
Sertoli - provide nutrient to nourish cell
Role of erector muscle
Easier pathway for sperm to enter uterus
-contract to push semen out
What causes male to not release as much sperm
Sacral sac not dropped down due to feral development
Damages to testes
