Year 8 Reproductive System - Mr. Hung 2014

Explanation
The testicle is a major male sex organ responsible for producing and storing sperm. It is located in the scrotum and plays a crucial role in the reproductive system. Sperm production occurs within the testicles, which are also responsible for the secretion of testosterone, the primary male sex hormone. The testicles are essential for fertility and the overall reproductive health of males.

Explanation
Testosterone is the correct answer because it is a chemical or hormone produced by the testes that leads to the development of male characteristics during puberty. Testosterone is responsible for the growth of facial and body hair, deepening of the voice, muscle development, and the production of sperm. It plays a crucial role in the development and maintenance of male reproductive tissues and secondary sexual characteristics.

Explanation
The epididymis is a set of coiled tubes that connect to the vas deferens. It is located on the back of each testicle and serves as a storage and maturation site for sperm. Sperm produced in the testes travel through the epididymis where they gain the ability to swim and fertilize an egg. From the epididymis, sperm can then pass into the vas deferens and eventually be released during ejaculation.

Explanation
The vas deferens is a muscular tube that transports sperm-filled semen. It is responsible for carrying sperm from the epididymis to the urethra during ejaculation. The vas deferens plays a crucial role in the male reproductive system by allowing the sperm to be transported and released during sexual activity.

Explanation
The correct answer is sperm. Sperm is a tiny male cell that is capable of fertilizing the female ovum or egg, leading to the formation of a fertilized egg or zygote. Sperm cells are produced in the testes and stored in the scrotum until they are ejaculated during sexual intercourse.

Explanation
Semen is the correct answer because it is a fluid that contains millions of sperm. It is the reproductive fluid produced by males and is ejaculated during sexual intercourse. Semen provides a medium for sperm to travel through the female reproductive system and fertilize an egg.

Explanation
The scrotum is the correct answer because it is the sac that holds the testes. It is a pouch of skin and muscle that hangs outside the body, housing the testicles and helping to regulate their temperature. The scrotum contracts or relaxes to adjust the distance of the testes from the body, ensuring optimal conditions for sperm production.

Explanation
Ejaculation is the process in which sperm-laden semen is released from the male body. This typically occurs during sexual stimulation and orgasm. The sperm in the semen can potentially fertilize an egg during sexual intercourse, leading to pregnancy. Ovulation refers to the release of an egg from the ovary in females, while gestation refers to the period of pregnancy. Fertilization is the fusion of sperm and egg to form a zygote. However, in this context, the most appropriate answer is ejaculation as it specifically describes the process of semen leaving the male body.

Explanation
The penis is the correct answer because it is the male reproductive organ responsible for delivering sperm-filled semen from the male to the female's vagina during sexual intercourse. The penis contains the urethra, which serves as a passage for both urine and semen. It becomes erect during sexual arousal, allowing for penetration and ejaculation.

Explanation
The prostate gland is responsible for producing some of the components of semen. It is a small gland located below the bladder and in front of the rectum in males. The prostate gland produces a fluid that helps nourish and transport sperm during ejaculation. This fluid, along with sperm from the testicles and secretions from other glands, makes up semen. The pancreas is not involved in semen production but plays a role in digestion and hormone regulation. Sweat glands produce sweat to regulate body temperature, and the thyroid gland produces hormones that regulate metabolism.