Gr 9 NATURAL SCIENCES: CH 1.3 Reproductive organs

Male Reproductive Organs

• The male reproductive system produces, maintains, and transports sperm and semen.
• Testes and Scrotum:
  • The testes are two oval-shaped organs located in the scrotum.
  • The scrotum maintains a temperature of around 35°C, essential for healthy sperm production.
  • Testes produce sperm and hormone testosterone, which triggers male secondary sexual characteristics during puberty.
• Sperm Duct (Vas Deferens):
  • It's a muscular tube that transports mature sperm from the epididymis to the urethra.
  • Muscle contractions propel sperm through the duct during ejaculation.
• Penis:
  • The penis is the external male sex organ, composed of spongy tissue that fills with blood to become erect.
  • The head of the penis is often covered by a loose fold of skin called the foreskin.
  • Sperm are delivered through the penis into the female reproductive tract during ejaculation.
• Urethra:
  • It's a tube that carries both urine from the bladder and semen from the reproductive tract, but not at the same time.
  • A valve mechanism ensures urine doesn't mix with semen.

Female Reproductive Organs

• The female reproductive system produces ova, facilitates fertilization, and supports fetal development.
• Vagina:
  • It's a muscular canal connecting the cervix of the uterus to the external genitalia.
  • Functions as a receptacle for the penis during intercourse, pathway for menstrual blood, and birth canal.
• Uterus:
  • It's a hollow, muscular organ housing and nourishing a fertilized egg until birth.
  • The lining (endometrium) thickens each month for potential pregnancy and sheds during menstruation.
• Ovaries:
  • They're two small, almond-shaped organs producing female sex hormones and storing/releasing eggs.
  • One ovary releases a mature egg each month in a process called ovulation.
• Oviducts (Fallopian Tubes):
  • They're narrow tubes connecting ovaries to the uterus.
  • During ovulation, an egg travels through the Fallopian tube, and fertilization typically occurs here.
  • The resulting zygote moves to the uterus for implantation and development.

Male Reproductive Organs

• The male reproductive system produces, maintains, and transports sperm and semen.
• Testes and Scrotum:
  • The testes are two oval-shaped organs located in the scrotum.
  • The scrotum maintains a temperature of around 35°C, essential for healthy sperm production.
  • Testes produce sperm and hormone testosterone, which triggers male secondary sexual characteristics during puberty.
• Sperm Duct (Vas Deferens):
  • It's a muscular tube that transports mature sperm from the epididymis to the urethra.
  • Muscle contractions propel sperm through the duct during ejaculation.
• Penis:
  • The penis is the external male sex organ, composed of spongy tissue that fills with blood to become erect.
  • The head of the penis is often covered by a loose fold of skin called the foreskin.
  • Sperm are delivered through the penis into the female reproductive tract during ejaculation.
• Urethra:
  • It's a tube that carries both urine from the bladder and semen from the reproductive tract, but not at the same time.
  • A valve mechanism ensures urine doesn't mix with semen.

Female Reproductive Organs

• The female reproductive system produces ova, facilitates fertilization, and supports fetal development.
• Vagina:
  • It's a muscular canal connecting the cervix of the uterus to the external genitalia.
  • Functions as a receptacle for the penis during intercourse, pathway for menstrual blood, and birth canal.
• Uterus:
  • It's a hollow, muscular organ housing and nourishing a fertilized egg until birth.
  • The lining (endometrium) thickens each month for potential pregnancy and sheds during menstruation.
• Ovaries:
  • They're two small, almond-shaped organs producing female sex hormones and storing/releasing eggs.
  • One ovary releases a mature egg each month in a process called ovulation.
• Oviducts (Fallopian Tubes):
  • They're narrow tubes connecting ovaries to the uterus.
  • During ovulation, an egg travels through the Fallopian tube, and fertilization typically occurs here.
  • The resulting zygote moves to the uterus for implantation and development.

Male Reproductive Organs

• The male reproductive system produces, maintains, and transports sperm and semen.
• Testes and Scrotum:
  • The testes are two oval-shaped organs located in the scrotum.
  • The scrotum maintains a temperature of around 35°C, essential for healthy sperm production.
  • Testes produce sperm and hormone testosterone, which triggers male secondary sexual characteristics during puberty.
• Sperm Duct (Vas Deferens):
  • It's a muscular tube that transports mature sperm from the epididymis to the urethra.
  • Muscle contractions propel sperm through the duct during ejaculation.
• Penis:
  • The penis is the external male sex organ, composed of spongy tissue that fills with blood to become erect.
  • The head of the penis is often covered by a loose fold of skin called the foreskin.
  • Sperm are delivered through the penis into the female reproductive tract during ejaculation.
• Urethra:
  • It's a tube that carries both urine from the bladder and semen from the reproductive tract, but not at the same time.
  • A valve mechanism ensures urine doesn't mix with semen.

Female Reproductive Organs

• The female reproductive system produces ova, facilitates fertilization, and supports fetal development.
• Vagina:
  • It's a muscular canal connecting the cervix of the uterus to the external genitalia.
  • Functions as a receptacle for the penis during intercourse, pathway for menstrual blood, and birth canal.
• Uterus:
  • It's a hollow, muscular organ housing and nourishing a fertilized egg until birth.
  • The lining (endometrium) thickens each month for potential pregnancy and sheds during menstruation.
• Ovaries:
  • They're two small, almond-shaped organs producing female sex hormones and storing/releasing eggs.
  • One ovary releases a mature egg each month in a process called ovulation.
• Oviducts (Fallopian Tubes):
  • They're narrow tubes connecting ovaries to the uterus.
  • During ovulation, an egg travels through the Fallopian tube, and fertilization typically occurs here.
  • The resulting zygote moves to the uterus for implantation and development.