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Skeletal, Muscular & Reproductive Body Systems BY: BRIANNA SHIELDS DO NOW • Complete the 10 mc questions on the handout QUIZ • It is now time for a quiz • Clear off your desks • You will only have about 10 minutes GOAL • To be able to describe the skeletal, muscular & reproductive systems and how their functioning helps the body to maintain homeostasis REVIEW- Without using notes! • Describe what role peristalsis plays in the digestive system • Peristalsis is the squeezing of food by involuntary muscles- it forces the food through the digestive tract REVIEW- Without using notes! • How can astronauts digest anything in outerspace, when there is no gravity?? • Peristalsis forces the food through the digestive tract REVIEW- Without using notes! • Describe the passage of food through the digestive tract- from beginning to end, what organs/parts does the food pass through? • Mouth--> Esophagus--> Stomach--> Small Intestines--> Large Intestines--> Anus REVIEW- Without using notes! • What types of cellular wastes does the excretory system of the body get rid of? • Water, heat, carbon dioxide, salt, urea REVIEW- Without using notes! • What are the 4 major organs that comprise the excretory system? Which ones are organs of excretion and which ones are organs of elimination? • Lungs, skin, kidneys- excretion • Large Intestine/ anus- elimination REVIEW- Without using notes! • What is the function of the endocrine system? • Glands secrete hormones that regulate the body’s functions (respond to changes inside and outside of the body) SKELETAL SYSTEM VIDEO • What are the 4 major functions of the skeletal system? QuickTime™ and a Sorenson Video 3 decompressor are needed to see this picture. Skeletal System • GOAL • To protect organs, allow movement, make red & white blood cells • Examples of Organ Protection: – brain covered by skull – heart & lungs covered by ribs Skeletal System • Joints • How do bones move? • 3 type of joints – Ball & Socket- allows twisting (hips) – Hinge- move in one direction (elbow) – Slightly moveable- limited movement (vertebra & ribs) Ball & Socket Joint Hinge Joint Skeletal System • Bones • Blood cells made in marrowhave calcium Skeletal System • Cartilage • Softer, flexible bone Skeletal System • Ligaments • Holds bone together at joints Skeletal System • Tendons • Cordlike tissue that attaches muscle to bone Muscular System Video • Describe the 3 types of muscle found in the body and area in which you can find each QuickTime™ and a Sorenson Video 3 decompressor are needed to see this picture. Muscular System Diagram Muscular System • GOAL • Allows the body to move • Muscles only contract (pull)they don’t push Muscular System • Types of muscles • VOLUNTARY (skeletal) – Can control them – Are attached to bones – Work in pairs Muscular System • Types of muscles • INVOLUNTARY (smooth) – Can’t control them – Found in blood vessels, organs, digestive tract Muscular System • Types of muscles • Cardiac (Heart) – Smooth, Involuntary Reproductive System Video • What type of gonads are found in the male & female and which cells does each produce? QuickTime™ and a Sorenson Video decompressor are needed to see this picture. Reproductive System Diagram Reproductive System • GOAL • Sex cells combine to produce young • Ovaries: In females, produce eggs • Testes: In males, produce sperm Reviewing what we’ve learned • What is the job of the skeletal system? • What is the job of the reproductive system? • What is the job of the muscular system? Reviewing what we’ve learned • Distinguish between the 3 types of joints • Distinguish between the 3 types of muscles • What are the major parts of the reproductive system? WEBSITES • Virtual Body: Skeletal system animations • My Body for Kids: Skeletal system animated diagram • My Body for Kids: Muscular system animated diagram • Yucky Body Facts • Interactive body system review • Innerbody.com Assignment- Write in AGENDA • Body System Review Homework • Due next class