Lab 5 Flashcards
Developmental period is split into
Why is it vulnerable
3 trimesters : 3 month periods
Development of organs
Vulnerable to pathogenic carcinogens
Types of contraceptive methods
Barrier: physically prevent sperm
Hormonal: alter natural hormone levels during different periods of hormonal cycle
Theoretical use failure rate
Actual use failure rate
(Define what they are )
Percentage of women who experience accidental pregnancy during first year
Failure rate when used correctly every time
Typical use over first year
What is effective at preventing STI and what are types of STI
Condoms
Bacterial: antibiotics
Viral: replicate within cells so harder
Reproductive system evolved in conjunction with
Hormone producing endocrine system
Gametogensis
Production of gametes
Two forms of gametogenesis
Spermatogenesis: takes place in tested four sperm from one spermatocyte
Oogenesis: 1 egg and three polar bodies from one oocyte
Difference in number of egg and sperm is due to what?
Size of gametes
Neurotic division is even in spermatogenesis
Uneven division one large egg receives most volume
After ovulation egg must be fertilized within
24 hours
If successful fertilization each gamete contributes
Half of genetic information
Sex determined immediately upon fertilization
If has X then female if Y then male
