ELEMENTARY SCIENCE FACTS & REVIEWERS

  FACTS ABOUT THE HUMAN REPRODUCTIVE SYSTEM   1.        The reproductive system is responsible for producing offspring. 2.        Reproduction is necessary for the continuation of a species. 3.        There are two types of reproduction: sexual and asexual. 4.        Sexual reproduction involves the union of sperm and egg. 5.        Asexual reproduction involves only one parent and produces offspring that are genetically identical to the parent. 6.        In humans, the reproductive system consists of the male and female reproductive systems. 7.        The male reproductive system includes the testes, penis, and accessory glands. 8.        The female reproductive system includes the ovaries, uterus, and vagina. 9.        The testes are responsible for producing sperm. 10.     The penis is the male reproductive organ used for intercourse. 11.     The accessory glands, including the prostate gland and seminal vesicles, produce fluids that mix with sperm to form se

  FACTS ABOUT THE HUMAN EXCRETORY SYSTEM 1.        The excretory system is a system of organs that helps the body get rid of waste. 2.        The main function of the excretory system is to remove waste products from the body and maintain a proper balance of fluids and electrolytes. 3.        The excretory system includes the kidneys, ureters, bladder, and urethra. 4.        The kidneys are the primary organs of the excretory system and filter waste products from the blood. 5.        The ureters are tubes that connect the kidneys to the bladder and transport urine from the kidneys to the bladder. 6.        The bladder is a muscular sac that stores urine until it is expelled from the body through the urethra. 7.        The urethra is a tube that carries urine from the bladder out of the body. 8.        Other organs that play a role in excretion include the skin, lungs, and liver. 9.        The skin helps to remove waste products through sweating. 10.     The lungs he