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The Endocrine and Immune Systems Answers. I. The Endocrine System. Open Sciencesaurus to 097. Define endocrine system. The endocrine system regulates many body activities by producing chemical messengers in glands. I. The Endocrine System. 2. Define hormones.
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I. The Endocrine System Open Sciencesaurus to 097. • Define endocrine system. • The endocrine system regulates many body activities by producing chemical messengers in glands.
I. The Endocrine System 2. Define hormones. Hormones are chemical messengers made in one organ and travel through the blood to a second organ. 3. When do hormones cause major changes in a person’s body? Hormones cause major changes in a person’s body during puberty.
The Endocrine System 4. Define glands. Organs that produce hormones and release them into the circulatory system. 5. Compare where hormones are produced to where they are used. They are produced in 1 organ, but travel through the blood to a second organ, where they are used.
The Endocrine System 7. List the purpose of the following glands: A. Pituitary gland – The “director” of the endocrine system. Many important hormones produced here. B. Hypothalamus – Also very important. Controls release of hormones produced by pituitary gland. C. Pineal gland – important to body rhythms like sleep, body temperature, reproduction and aging. D. Thyroid gland – produces hormones for growth and metabolism.
The Endocrine System 7. List the purpose of the following glands: E. Thymus – helps body fight disease, produces white blood cells. F. Adrenal glands – helps fight allergies and infections, produces adrenaline. G. Pancreas – secretes insulin and glucagon, regulates blood sugar. H. Ovaries and Testes – control sexual development.
The Endocrine System 8. Copy the diagram.
I. The Immune System Open Sciencesaurus to 098. 1. Define Immune system. system that protects the body against disease 2. Define pathogen. disease-causing agents 3. Define antibodies. proteins produced in some white blood cells
I. The Immune System 4. Which body systems are the first line of defense against pathogens? • Integumentary system defense • Respiratory system defense • Digestive system defense
I. The Immune System 5. List the ways the Integumentary, Respiratory, and Digestive System Defenses work. • Integumentary system defense – barrier between body and outside world. • Respiratory system defense – sneezing and coughing. • Digestive system defense – saliva, mucus, stomach acids
I. The Immune System 6. List 4 ways pathogens can enter your body. • Through skin. • Through air you breathe. • Food you eat. • Liquids you drink. • Define white blood cells. Cell carried in the blood that helps fight infectious disease.
I. The Immune System 8. Define antigen. pieces of destroyed pathogens; Antigens alert white blood cells to an invader’s presence.
I. The Immune System 9. Define immunity. body’s resistance to a sickness 10. Compare and contrast passive and active immunity. • Passive immunity – immunity you received from your mother at birth. • Active immunity – immunity your own body has by creating its own antibodies.
I. The Immune System 11. How can diseases be prevented? Diseases can be prevented by vaccines. 12. How can diseases be treated? Diseases can be treated by antibiotics.