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by BlastRoom
The structures of the human reproductive system and the stages of development from fertilization to birth.
#biology
20 questions
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Which structure produces sperm cells and secretes the hormone testosterone?
An embryo implants in a thick, blood-rich lining, and the offspring grows there for the rest of the pregnancy. Which organ is this?
The testes hang in the scrotum, outside the main body cavity. What does this arrangement do for sperm production?
Which structure carries sperm from the epididymis toward the urethra?
The cervix is the narrow lower opening of the uterus, and it widens during labor so the baby can pass into the vagina.
Both the epididymis and the vas deferens handle sperm after the testis makes them. What does the epididymis do that the vas deferens does not?
The flow chart shows events from an ovary to implantation, with the first step missing. Which event belongs in the blank?
One cell entering meiosis produces gametes. How many usable gametes come from one such cell in a male, and how many in a female?
A human body cell has 46 chromosomes, but a human sperm and a human egg each have 23. Why are gametes made this way?
An ovary releases a mature egg, and sperm are already present in the female reproductive tract. Where does a sperm normally fuse with that egg?
The flow chart traces one cell through its first week. Which stage belongs in the blank at the start?
The timeline is missing the event about a week after fertilization. Which event fills that gap?
A student built the flow chart below but left one stage out. Which term belongs in the blank?
Put these events in the order they happen: 1) the egg is swept into an oviduct; 2) a follicle in the ovary matures; 3) a ball of cells implants in the uterine lining; 4) a sperm fuses with the egg.
A fetus takes in oxygen and nutrients from its mother, yet the mother's blood never enters the fetus's blood vessels. How is that possible?
What does the amniotic fluid held inside the amnion do for the developing offspring?
Which structure carries blood between the developing fetus and the placenta?
The timeline of a pregnancy is missing the milestone at about week 20. Which event belongs there?
The flow chart of labor and birth is missing its final step. What happens after the baby has been delivered?
Doctors warn most strongly against alcohol and certain medicines during the first trimester. What about that period makes it the most dangerous time?
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Plant Organs and Tissues
40 questions
