10 Flashcards
What is the speed of sound in air?
235 m/s
What is the largest cell in the human body?
Ovum
How much larger is the ovum compared to a sperm cell?
20x bigger
What does the cell membrane control?
Entry and exit of substances
What happens during fertilization?
The sperm and ovum nucleus fuse to form a zygote
What are the female reproductive organs involved in fertilization?
- Ovaries
- Fallopian tubes
- Uterus
- Cervix
- Vagina
What is the lifespan of an ovum after ovulation?
24 hours
How long can sperm survive in the female body?
3-5 days
Where does fertilization occur?
In the fallopian tube
What are hormones?
Chemicals produced by males and females
What does FSH stand for?
Follicle Stimulating Hormone
What does LH stand for?
Luteinizing Hormone
What effect does estrogen have on the uterus?
Causes lining to thicken
What is a zygote?
Fertilized egg traveling towards the uterus
What is the blastocyst?
The fertilized zygote begins to divide to form a ball of cells
What connects the embryo to the uterus wall?
Placenta
At what stage does the embryo become a fetus?
At 11 weeks
Fill in the blank: Fertilization is the fusion of ovum and sperm cells’ _______.
nucleus
True or False: Fertilization can occur before ovulation.
False
