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1 Human Body Systems and Health Chapter 1 Section 2 The Human Skeletal System.

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Presentation on theme: "1 Human Body Systems and Health Chapter 1 Section 2 The Human Skeletal System."— Presentation transcript:

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2 1 Human Body Systems and Health Chapter 1 Section 2 The Human Skeletal System

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4 3 The Skeletal System— Bones, cartilage, and the connective tissue that holds bones together.

5 4 Bones are hard…but they are made of living tissue! Bones help your body maintain homeostasis by storing minerals and making blood cells for when your body needs them.

6 5 Your Skeleton Has Specific Jobs Protection — for example, ribs protect your heart and lungs Storage— bones store minerals and fat Movement— muscles pull on bones so your body can move Blood Cells—blood Makes cells are made in the center of some bones

7 6 Structure of Bone Cartilage Blood Vessels

8 7 Facts About Bone Structure Bone is a living organ—that’s right, a living organ! Bone is made of connective tissue and minerals Special living cells called osteoblasts (AHS tee oh blasts) deposit (put) the minerals in the bone cells

9 8 More Bone Facts… Compact Bone —very dense Spongy Bone —has air pockets; very strong Marrow —center of bone – Red Marrow — makes red and white blood cells – Yellow Marrow — stores fat for energy

10 9 Which Kind of Bone Tissue is Hard and Compact? Compact Bone Spongy Bone Marrow

11 10 No! The Answer is Compact Bone ! Continue

12 11 Correct!

13 12 Compact Bone Spongy Bone Marrow What Type of Bone Makes Blood Cells and Stores Fat?

14 13 No! The Answer is Marrow ! Continue

15 14 Correct!

16 15 Bones start out soft, as cartilage As babies grow bigger their cartilage turns into bone Our ears and our nose are examples of cartilage tissue –They are both flexible How Do Bones Grow?

17 16 Three Main Kinds of Moving Joints GlidingHinge Ball and Socket

18 17 Some Joints Don’t Move Fortunately!

19 18 Human Joint Animations

20 19 Skeletal Injuries Fracture —a break in a bone Dislocation —a bone forced out of location or place Sprain —abnormal stretching or tearing of a ligament (remember, ligaments hold muscles onto bones)

21 20 Skeletal Injuries and Diseases Fracture —a break in a bone Dislocation —a bone forced out of location or place Sprain —abnormal stretching or tearing of a ligament (remember, ligaments hold muscles onto bones) Fracture

22 21 Skeletal Injuries and Diseases Fracture —a break in a bone Dislocation —a bone forced out of location or place Sprain —abnormal stretching or tearing of a ligament (remember, ligaments hold muscles onto bones) Fracture

23 22 Skeletal Injuries and Diseases Fracture —a break in a bone Dislocation —a bone forced out of location or place Sprain —abnormal stretching or tearing of a ligament (remember, ligaments hold muscles onto bones) Fracture Sprain

24 23 Skeletal Diseases Osteoporosis— bones become less dense and more weak causing bones to break easily Arthritis— swelling and stiffening of joints causing pain and reduced flexibility

25 24 Skeletal Diseases Osteoporosis— bones become less dense and more weak causing bones to break easily Arthritis— swelling and stiffening of joints causing pain and reduced flexibility

26 25 Skeletal Diseases Osteoporosis— bones become less dense and more weak causing bones to break easily Arthritis— swelling and stiffening of joints causing pain and reduced flexibility

27 26 One Of Our Favorite Skeletons

28 27 Section Review Questions 1)Which of the following is NOT an organ of the skeletal system? a)Bone b)Cartilage c)Muscle d)None of the above

29 28 Section Review Questions 2)What are the four functions of bones?

30 29 Section Review Questions 3)What are the three kinds of moveable joints?

31 30 Section Review Questions 4)Describe two diseases that affect the skeletal system

32 31 The End


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