science

• Human Reproductive System: Male Reproduction is to produce and transport sperm cells.
• The pituitary gland controls reproductive processes.
• Human Reproductive System: Female Reproduction is to receive sperm, produce egg cells, and is for child bearing.
• Male Reproductive System: Urethra is the tube that passes through the penis to the outside of the body.
• Male Reproductive System:Epididymis stores the sperm for two or four days after they have been produced.
• Penis is a soft, tubular organ that hangs from the body and delivers the sperm to the female body.
• Vas Deferens is a tube that receives the sperm from the epididymis of each testicle.
• Testes are coiled tubules in which are produced and they also produce testosterone for the production of sperm.
• Scrotum is a pouch of skin that hangs from the penis where it protects the sperm by keeping the temperature lower.
• Female Reproductive System: Ovaries secrete hormones called estrogen and progesterone to produce mature egg cells.
• Ovulation is when the ovaries produce and release one ripened egg every 28 days.
• Fallopian/Uterine Tube is to house the egg until fertilization and is the passage way to the uterus.
• Uterus/Womb is where the fertilized egg will develop and grow offspring.
• Cervix is a narrow structure within an inch-long canal connecting the lower end of uterus to upper of vagina.
• Vagina or Birth Canal is the hollow tube leading from the cervix to the outside of the body.
• Vulva is the female external genitalia.
• Testosterone regulates the development of male sex organs while still an embryo and controls sex drive and sex characteristics at puberty.
• Estrogen controls sex drive and regulates the development of the female sex characteristics at puberty.
• Progesterone stimulates the production of milk in the mammary glands.
• Gametogenesis is the formation of gamete (sperm and egg).
• Fertilization/Blastulation is when the sperm penetrates an egg and the fusion of their nucleus takes place.
• Cleavage is when the fertilized egg undergoes a series of mitotic divisions and later becomes an early embryo.
• Gastrulation is to organize cell migration patterns in the embryo to form three germ layers.
• Organogenesis is a process of cell differentiation and formation of all major organs.
• Growth and Tissue Specialization is when the organs acquire their unique structure and chemical properties.
• Umbilical cord is the embryo lifeline, serving as a shock absorber and helping the embryo maintain its temperature.
• Thyroid Gland regulates the rate of metabolism, and help regulate the calcium levels in bloodstreams.
• Thymus enhances the ability of the immune system to function.
• Ovaries and Testes play an important role in developing some of the body’s defenses against infection.
• Adrenal Gland triggers the “fight or flight” response and produces both male and female sex hormones in both sexes.
• Pancreas controls the level of sugar in the blood.
• Pituitary Gland stimulates adrenal and thyroid gland to release specific hormones, the growth of skeletal system, and milk production in the mammary glands.
• Embryo is the initial development stage in humans after fertilization.
• Placenta is the bond that holds the embryo to the wall of uterus.
• Menstruation is a monthly shedding of the lining of the uterus known as the endometrium.
• Gland produces and releases a chemical substance called hormones, which is the smallest living unit of the body (the messenger).
• Implantation is when a blastocyst begins to adhere to the uterine lining.
• Fertilization is the union of a sperm cell from a male and an egg cell from a female.
• Hypothalamus regulates body temperature, blood pressure, use of water, activities of the body, metabolism, and reproduction.
• Endocrine System is made up of a group of organs called endocrine glands, which checks the balances that work to keep the body system healthy.