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Skeletal System. 4 Functions of the Skeletal System 1. Supports the body. The backbone is the main support center for the upper body. It holds your head.

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Presentation on theme: "Skeletal System. 4 Functions of the Skeletal System 1. Supports the body. The backbone is the main support center for the upper body. It holds your head."— Presentation transcript:

1 Skeletal System

2 4 Functions of the Skeletal System 1. Supports the body. The backbone is the main support center for the upper body. It holds your head up and protects your spinal cord. 2. Protects internal organs: The bones of your skull protect your brain. Your ribs protect your lungs and heart from injury Muscle attached to bones!!

3 4 Functions of the Skeletal System 3. Works with Muscles to produce movement: Skeletal system provides points of attachment for muscles. Your legs and arms move when the muscles pull on the bones. 4. Makes Blood: Red and white blood cells are formed by tissue called marrow, which is in the center of the bone.

4 Bone Structure Typical Four Layers: – Periosteum: Covers Bones – Compact Bone: Lies beneath the periosteum – Spongy Bone: Lies beneath the compact bone – Bone Marrow: Fills the gaps between the spongy bone Spongy Bone Compact Bone Bone Marrow /Marrow Cavity

5 Bones of the Cranium Some are thicker than others!!!

6 Cranium Bones Frontal Bone Occipital Bone Temporal Bone Parietal Bone

7 Picture from Cranium

8 Mandible Maxilla ? The mandible is the largest and strongest bone of the face. What else is it called?

9 Picture from Cranium Mandible

10 Clavicle or Collarbone The clavicle, or collar bone, holds the shoulder joint away from the rest of the upper body and is only as thick as your little finger.

11 Picture from Cranium Mandible Clavicle

12 Scapula The scapula is located on the back side of the ribcage and helps provide part of the shoulder joint and movement for the arms.

13 Picture from Cranium Mandible Clavicle Scapula

14 Vertebral column Also known as the spine, or vertebrae. A column usually consisting of 24 articulating vertebrae

15 Picture from Cranium Mandible Clavicle Scapula Vertebrae

16 Coccyx and Sacrum

17 Picture from Cranium Mandible Clavicle Scapula Vertebrae Coccyx Sacrum

18 Humerus (Upper Arm Bone)

19 Picture from Cranium Mandible Clavicle Scapula Vertebrae Coccyx Sacrum Humerus Phalanges

20 Radius and Ulna Radius on Top Ulna on Bottom

21 Picture from Cranium Mandible Clavicle Scapula Vertebrae Coccyx Sacrum Humerus Ulna Radius

22 Carpals or (Wrist Bones)

23 Picture from Cranium Mandible Clavicle Scapula Vertebrae Coccyx Sacrum Humerus Ulna Radius Carpels (Wristbone)

24 Metacarpals (Top of Hands)

25 Picture from Cranium Mandible Clavicle Scapula Vertebrae Coccyx Sacrum Humerus Ulna Radius Metacarpals Carpels (Wristbone)

26 Phalanges (Little Fingers)

27 Picture from Cranium Mandible Clavicle Scapula Vertebrae Coccyx Sacrum Humerus Ulna Radius Metacarpals Phalanges Carpels (Wristbone)

28 Rib Cage

29 Picture from Cranium Mandible Clavicle Scapula Vertebrae Coccyx Sacrum Humerus Ulna Radius Metacarpals Phalanges Rib Cage Carpels (Wristbone)

30 Sternum (Breastbone)

31 Picture from Cranium Mandible Clavicle Scapula Vertebrae Coccyx Sacrum Humerus Ulna Radius Metacarpals Phalanges Rib Cage Sternum (Breastbone) Carpels (Wristbone)

32 Pelvis (Dancing Bone)

33 Picture from Cranium Mandible Clavicle Scapula Vertebrae Coccyx Sacrum Humerus Ulna Radius Metacarpals Phalanges Rib Cage Sternum (Breastbone) Carpels (Wristbone) Pelvis

34 Femur (Largest Bone in the Body)

35 Picture from Cranium Mandible Clavicle Scapula Vertebrae Coccyx Sacrum Humerus Ulna Radius Metacarpals Phalanges Rib Cage Sternum (Breastbone) Carpels (Wristbone) Pelvis Femur

36 The Tibia and Fibula

37 Picture from Cranium Mandible Clavicle Scapula Vertebrae Coccyx Sacrum Humerus Ulna Radius Metacarpals Phalanges Rib Cage Sternum (Breastbone) Carpels (Wristbone) Pelvis Femur Tibia Fibula Patella

38 Tarsals

39 Picture from Cranium Mandible Clavicle Scapula Vertebrae Coccyx Sacrum Humerus Ulna Radius Metacarpals Phalanges Rib Cage Sternum (Breastbone) Carpels (Wristbone) Pelvis Femur Tibia Fibula Patella Tarsales

40 Metatarsals

41 Picture from Cranium Mandible Clavicle Scapula Vertebrae Coccyx Sacrum Humerus Ulna Radius Metacarpals Phalanges Rib Cage Sternum (Breastbone) Carpels (Wristbone) Pelvis Femur Tibia Fibula Patella Tarsales Metatarsales

42 Phalanges

43 Picture from Cranium Mandible Clavicle Scapula Vertebrae Coccyx Sacrum Humerus Ulna Radius Metacarpals Phalanges Rib Cage Sternum (Breastbone) Carpels (Wristbone) Pelvis Femur Tibia Fibula Patella Tarsales Metatarsales Phalanges

44 The Connectors of the Body Ligaments: Connect bone to bone

45 The Connectors of the Body!! Tendon: Attaches muscles to bones

46 The Connectors of the Body Cartilage: It acts as a cushion between bones at a joint and protects the bones.

47 Joints of the Body Ball and Socket Joint: Round end of bone fitting snuggly within another bone. – Ex. Shoulder and Hip

48 Joints of the Body Hinge Joint: Movement at joint in one direction like a door. – Ex. Knee and Elbow

49 Joints of the Body Pivot Joint: one bone rotates in the ring of another bone. – Ex. Neck, Wrist and Ankles

50 Joints of the Body Gliding Joint: Bones glide over another bone. – Ex. Knuckles

51 Problems of the Skeletal System Fracture: Break Dislocation: Out of joint

52 Problems of the Skeletal System Sprain: Swelling in the joint Arthritis: Inflamed and stiff joints

53 Problems of the Skeletal System!! Scoliosis: Curvature of the spine Osteoporosis: Brittle bones


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