Life Science Flashcards
Where is the egg usually fertilized
The oviduct
What is the Union of the sperm and the egg
Fertilization
Where does the embryo develop
The uterus
During what stage of development does the amniotic sac form
Embryo
When do eggs start to develope in the ovaries
Puberty
When does puberty acur
Adolescent
When an egg and a sperm unite a is formed
Zygote
What period does growth stop
Adulthood
Unlike identical twins all of the following can be true of fraternal twins except blank
A single egg was fertilized and split
T f blood vessels in the umbilical cord carry nutrients and oxygen from the mothers blood through the placenta to the embryo
True
T f the endocrine system sends chemical messages in your blood that affects specific tissues called target tissues
True
T f the uterus is called the birth canal because during birth the baby travels through this tube to the outside of the mom
False
Many internal body conditions such as hormone level blood sugar level and body temp level are controlled by negative feedback system t f
True
T f semen leaves the body through the urethra which is the same tube that carries urine
True
T f the menstraul cycle of a female human averages 28 days
True
