ONE EIGHTH CONTEST 2025
Ghana National College - 65 points
Tema Secondary School - 33 points
Effiduase SHCS - 28 points
ONE EIGHTH CONTEST 2025
Mankranso SHS - 43 points
St Paul's SHS, Denu - 23 points
Adonten SHS - 14 points
ONE EIGHTH CONTEST 2025
St. Thomas Aquinas SHS - 51 points
Tamale SHS - 37 points
O'Reilly SHS - 25 points
ROUND 2
SPEED RACE
QUESTION
3. Name the flexible tube-like structure in mammals that connects a developing fetus to the placenta in the womb
ANSWER: Umbilical Cord
PRACTICE QUESTIONS
1. Name the blood vessels found in the umbilical cord.
ANSWER: Two umbilical arteries and one umbilical vein.
2. What kind of blood does the umbilical vein carry?
ANSWER: Oxygenated blood from the placenta to the fetus.
3. State the main function of the placenta.
ANSWER: It is the site of exchange of gases, nutrients and wastes between the mother and the fetus.
4. Which fetal membrane joins with the endometrium to form the placenta?
ANSWER: The chorion.
5. What is the amnion?
ANSWER: A membrane forming a fluid-filled sac around the fetus.
6. State one function of the amniotic fluid.
ANSWER: It cushions the fetus against shock.
7. Does the maternal blood mix with the fetal blood in the placenta?
ANSWER: No, they are separated by the placental membrane.
8. Name two hormones produced by the placenta.
ANSWER: Progesterone and oestrogen (also human chorionic gonadotropin).
9. What is the scar left where the umbilical cord was attached called?
ANSWER: The navel (umbilicus).
10. What is the placenta expelled after birth called?
ANSWER: The afterbirth.
11. How long does a normal human pregnancy last?
ANSWER: About 40 weeks (nine months).
12. Name one harmful substance that can cross the placenta.
ANSWER: Alcohol (also nicotine, some drugs and some viruses).