Human Reproduction (Part 1 - Male) Flashcards
Gametes
Haploid sex cells that fuse during sexual reproduction
Zygote
Diploid cell formed by the fusion of haploid gametes during sexual reproduction
Testes
Produce sperm, produce the hormone testosterone
Epididymis
Stores and matures sperm until it is released
Vas deferns
carries sperm into the urethra
Prostate gland
Cowper’s gland
Seminal vesicles
contribution to the production of seminal fluid
Penis
Release of sperm into the urethra
Scrotum
Keeps the temperature of the testes slightly lower than body temperature to maintain sperm count
Urethra
Carries semen out of the body
Formation of male gametes
Meiosis to produce haploid sperm cells which are stored in the epididymis until they are released
Sperm structure
Tail (flagellum) - Movement
Neck - Generates energy
Head - Contains haploid nucleus
Acrosome - Dissolves the wall of the egg (Contains digestive enzymes)
Role of hormones in male
LH stimulates the release of testosterone by the testes
FSH stimulates the production of sperm
Testosterone is necessary for the production of sperm
Testosterone is responsible for secondary sex characteristis