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The Endocrine and Reproductive System

The Endocrine and Reproductive System. What is the Endocrine System?. A system of glands that uses hormones to control many parts of your body. Chemical Messengers. Hormones are chemical messengers that send messages to different parts of your body.

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The Endocrine and Reproductive System

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  1. The Endocrine andReproductive System

  2. What is the Endocrine System? • A system of glands that uses hormones to control many parts of your body.

  3. Chemical Messengers • Hormones are chemical messengers that send messages to different parts of your body. • Hormones are made by glands, and then released into the bloodstream. • Once the Hormone finds its ‘Target’, the target tissue will respond.

  4. Glands of the Endocrine System • Pituitary Gland- • Location- Inside the brain. • Function- Makes hormones that affect growth and reproduction.

  5. Glands of the Endocrine System • Pineal Gland- • Location- Inside the brain. • Function- Produces Melatonin- Hormone that controls our sleep cycle.

  6. Glands of the Endocrine System • Thymus- • Location- Upper Chest. • Function- Stimulates the creation of infection-fighting cells.

  7. Glands of the Endocrine System Thyroid Gland- Location- Below the Larynx. Function- Helps to regulate metabolism, and controls how much calcium our bones absorb.

  8. Glands of the Endocrine System • Adrenal Glands- • Location- On top of Kidneys. • Function- Adrenalin controls how you react to stressful situations. • Controls the Fight or Flight response.

  9. Glands of the Endocrine System • Pancreas- Function: • Makes the insulin hormone that controls sugar levels in the blood.

  10. Glands of the Endocrine System • Testes- Function: • Makes Testosterone- Hormone that controls male sex traits. • Also used in sperm production.

  11. Glands of the Endocrine System • Ovaries- Function: • Makes Estrogen and Progesterone- Hormones that control female sex characteristics. • Also regulates the menstrual cycle.

  12. What is Reproduction? • The process that continues life on earth. • Hormones from the endocrine system help control male and female reproduction.

  13. The Male Reproductive System • Penis and Scrotum- The Scrotum contains the two Testes. • Testes- Male sex organs that produces Testosterone and Sperm.

  14. The Male Reproductive System • Sperm- Male reproductive cell. • Has a tail and a head- Within the head is hereditary information (DNA).

  15. The Male Reproductive System • Fluid is added to the sperm by the Seminal Vesicle and the Prostate. • Once fluid is added to the sperm, it is called Semen. • Semen leaves the body through the Urethra.

  16. Female Reproductive System • Ovaries- Female sex organs that produce eggs. • Ovulation- The release of an egg from the ovaries. • Once the egg leaves the ovary, it enters a Fallopian Tube- Tube that connects the Ovary to the Uterus. • Fertilization of the egg occurs in the Fallopian Tube.

  17. Once fertilized, the egg travels to the Uterus- A muscular organ where the egg develops into a baby. The Cervix- The opening into the Uterus. The Cervix leads into the Vagina- The birthing tube that leads to outside the body. Female Reproductive System

  18. Development before Birth • After the sperm enters an egg, the two nuclei fuse into one- This creates a Zygote. • After the Zygote attaches to the wall of the Uterus, it is called an Embryo. • After the first two months of pregnancy, the developing embryo is called a Fetus.

  19. Zygote Embryo Fetus

  20. Ovaries Egg Fallopian Tubes Uterus

  21. Ovaries Egg Fallopian Tubes Fertilization Uterus

  22. Embryo Fetus

  23. The Menstrual Cycle • Before an egg is released, the body prepares to have a baby. • The uterus’s wall thickens with blood in case an egg is fertilized. • If the egg is fertilized, the blood gives nutrients to the egg. • If the egg is not fertilized, the blood and egg are flushed out of the body.

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