Grade 8 human reproduction

42 important questions on Grade 8 human reproduction

What happens in the follicular phase of the menstrual cycle?

  • Matured egg follicle releases an egg
  • Uterus preparation begins
  • Starts another pregnancy preparation

What event begins the menstrual cycle in females?

  • Begins with puberty
  • Continues until late 40s
  • Menopause may occur

What occurs during the ovulatory phase?

  • Mid-cycle phase
  • Ovulation takes place (days 13-17)
  • End of follicular phase defines fertilization period
  • Higher grades + faster learning
  • Never study anything twice
  • 100% sure, 100% understanding
Discover Study Smart

What is an egg cell?

  • A female gamete.
  • Contains nucleus, cytoplasm.
  • Surrounded by cell membrane.
  • Has follicle cells and zone pellucida.

How long does each menstrual cycle last?

  • Approximately 28 days
  • Starts with uterine lining shedding

Describe the luteal phase in the menstrual cycle.

  • Post-ovulation phase
  • Fate of corpus luteum decided
  • Fertilization: pregnancy starts; otherwise, cycle restarts

What are the main functions of the female reproductive system?

  • Make egg cells (ova)
  • Allow fertilization
  • Provide embryo nourishment

What is a sperm cell?

  • A male gamete.
  • Contains nucleus, acrosome.
  • Has mitochondria.
  • Tail/flagellum for movement.

What happens during the menstrual phase?

  • Uterus lining prepared for implantation sheds
  • Lasts 3 to 5 days

What is the pathway of sperm from the testes to outside the penis?

  • Starts at the testes.
  • Moves through the sperm duct.
  • Passes into the urethra.
  • Exits via the penis.

What is the function of the vagina?

  • Canal joining the cervix to the body’s exterior

How many male sperm cells are involved in reproduction?

  • Millions are released.

What occurs if the egg is not fertilized?

  • Uterus lining and unfertilized ovum shed
  • Begins the menstrual cycle

What are key characteristics of the ova?

  • Largest cells in the body
  • Ova number predetermined at birth
  • Released monthly from puberty

What is the size comparison of male sperm in the human body?

  • Sperm are the smallest cells.
  • Meant for fertilization.

What role does the cervix play?

  • Connects the vagina and uterus
  • Produces mucus

How many female egg cells are involved in reproduction?

  • Only one egg.

What controls the menstrual cycle processes?

  • Controlled by various hormones
  • Prepares body for childbirth and motherhood

How often do ovaries release an ovum?

  • Once a month on day 14 of the cycle
  • Alternate production each month

What is the role of the male reproductive system?

  • Make sperm cells
  • Deliver to female body
  • Facilitate fertilization

What are the main parts of a sperm cell?

  • Head: Acrosome & nucleus
  • Middle piece: Mitochondria
  • Tail: Flagellum

Describe the uterus and its functions.

  • Hollow, pear-shaped organ
  • Expands during fetal development
  • Endometrial lining for menstruation

What is the size comparison between sperm and egg cells?

  • Sperm: 5μm, very small.
  • Egg: Very large.

What happens during days 1-7 of the menstrual cycle?

  • Menstruation occurs
  • Uterus lining breaks down

What is the function of the penis in the male reproductive system?

  • Male sex organ
  • Transfers sperm to female

What is the function of the acrosome in sperm?

  • Contains digestive enzymes for fertilization.

What is the function of the fallopian tube?

  • Tube for ova travel from ovaries to uterus

How many mitochondria are in sperm cells?

  • Sperm: 100-200,000 mitochondria.

What is the role of the uterine lining during the cycle?

  • Thickens to receive and nourish embryo
  • Prepares for pregnancy

What is the scrotum and its function?

  • A sac or pouch of skin
  • Holds the testes externally

How are millions of sperm produced daily?

  • Puberty triggers production in testes.
  • 500 million every 24 hours.

Describe the function of the ovary.

  • Secretes hormones (oestrogen, progesterone)
  • Produces egg cells (ova)

How many mitochondria are in egg cells?

  • Egg: 75-100 mitochondria.

Describe the stages between days 8-11 of the cycle.

  • Womb lining thickens
  • Prepares for the egg

What is produced in the testes?

  • Testosterone
  • Sperm cells

Why is sperm highly sensitive?

  • Sensitive to temperature and pH.
  • Requires ideal conditions to fertilize.

What is a special feature of sperm cells?

  • Outer jelly coat for protection.

Describe the function of the vas deferens.

  • Tube for transporting sperm
  • Sperm moves to the urethra

Why do testes hang outside the body in the scrotum?

  • To keep sperm at optimum temperature for viability.

What is a special feature of egg cells?

  • Tail for propulsion.

Describe the stage from days 18-25 of the cycle.

  • If no implantation, the womb lining fades away

What is the role of the urethra in the male reproductive system?

  • Tube for sperm ejaculation
  • Transports urine and sperm

The question on the page originate from the summary of the following study material:

  • A unique study and practice tool
  • Never study anything twice again
  • Get the grades you hope for
  • 100% sure, 100% understanding
Remember faster, study better. Scientifically proven.
Trustpilot Logo