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Skeletal System
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The Basics
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Skeletal System The Basics –provides support and shape to the body
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Skeletal System The Basics –provides support and shape to the body –protects delicate internal organs
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Skeletal System The Basics –provides support and shape to the body –protects delicate internal organs –acts as a system of levers on which muscles act to produce movement
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Skeletal System The Basics –provides support and shape to the body –protects delicate internal organs –acts as a system of levers on which muscles act to produce movement –stores minerals
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Skeletal System The Basics –provides support and shape to the body –protects delicate internal organs –acts as a system of levers on which muscles act to produce movement –stores minerals –site of blood cell formation
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Skeletal System The Basics –provides support and shape to the body –protects delicate internal organs –acts as a system of levers on which muscles act to produce movement –stores minerals –site of blood cell formation
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The Structure of Bone
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Periosteum - a tough membrane that covers the bone
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The Structure of Bone Periosteum - a tough membrane that covers the bone Compact bone - dense bone tissue similar to ivory
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The Structure of Bone Periosteum - a tough membrane that covers the bone Compact bone - dense bone tissue similar to ivory Spongy bone - adds strength to bones without adding mass
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The Structure of Bone Periosteum - a tough membrane that covers the bone Compact bone - dense bone tissue similar to ivory Spongy bone - adds strength to bones without adding mass Marrow in center
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The Structure of Bone Periosteum - a tough membrane that covers the bone Compact bone - dense bone tissue similar to ivory Spongy bone - adds strength to bones without adding mass
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How are bones formed?
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Bones are made of living tissue - osteocytes
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How are bones formed? Bones are made of living tissue - osteocytes Ossification - process of osteocytes adding calcium to cartilage
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How are bones formed? Bones are made of living tissue - osteocytes Ossification - process of osteocytes adding calcium to cartilage Osteocytes can either add or remove calcium salts
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How are bones formed? Bones are made of living tissue - osteocytes Ossification - process of osteocytes adding calcium to cartilage Osteocytes can either add or remove calcium salts
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How bones grow!
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Long bones (like those of arms & legs) - have growth plates at either end
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How bones grow! Long bones (like those of arms & legs) - have growth plates at either end The cartilage in the growth plates cause bones to lengthen
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How bones grow! Long bones (like those of arms & legs) - have growth plates at either end The cartilage in the growth plates cause bones to lengthen Cartilage is then ossified becoming bone
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How bones grow! Long bones (like those of arms & legs) - have growth plates at either end The cartilage in the growth plates cause bones to lengthen Cartilage is then ossified becoming bone
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How bones grow! Long bones (like those of arms & legs) - have growth plates at either end The cartilage in the growth plates cause bones to lengthen Cartilage is then ossified becoming bone
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Keeping Bone Tissue Healthy
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Haversian canals are tubes through bone tissue.
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Keeping Bone Tissue Healthy Haversian canals are tubes through bone tissue. Blood vessels and nervous tissue are found in the Haversian canals
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Keeping Bone Tissue Healthy Haversian canals are tubes through bone tissue. Blood vessels and nervous tissue are found in the Haversian canals Osteocytes are nourished by these blood vessels
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Keeping Bone Tissue Healthy Haversian canals (osteons) are tubes through bone tissue. Blood vessels and nervous tissue are found in the Haversian canals Osteocytes are nourished by these blood vessels
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Connecting Bones Together
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While bone is strong structurally it is a soft material that wears easily
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Connecting Bones Together While bone is strong structurally it is a soft material that wears easily Cartilage at ends of bone prevent bone on bone wear
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Connecting Bones Together While bone is strong structurally it is a soft material that wears easily Cartilage at ends of bone prevent bone on bone wear Ligaments hold bones together
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Connecting Bones Together While bone is strong structurally it is a soft material that wears easily Cartilage at ends of bone prevent bone on bone wear Ligaments hold bones together
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Different types of joints.
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Fixed joints - found in skull do not allow movement. These are also called suture joints because of their jagged appearance
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Different types of joints. Fixed joints - found in skull do not allow movement. These are also called suture joints because of their jagged appearance
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Different types of joints. Hinged joints - like those found in the knee provide movement similar to a door hinge
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Different types of joints. Hinged joints - like those found in the knee provide movement similar to a door hinge
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Different types of joints. Hinged joints - like those found in the knee provide movement similar to a door hinge
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Different types of joints. Ball and socket joints - like those found in the shoulder and hips allow for movement in all directions
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Different types of joints. Ball and socket joints - like those found in the shoulder and hips allow for movement in all directions
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Different types of joints. Ball and socket joints - like those found in the shoulder and hips allow for movement in all directions
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Different types of joints. Ball and socket joints - like those found in the shoulder and hips allow for movement in all directions
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Different types of joints. Saddle or Gliding joints - like those found in the back allow small movements between bones
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Different types of joints. Saddle or Gliding joints - like those found in the back allow small movements between bones
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Different types of joints. Saddle or Gliding joints - like those found in the back allow small movements between bones
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Different types of joints. Saddle or Gliding joints - like those found in the back allow small movements between bones
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Different types of joints. Pivot joints - like the one found at the elbow end of the radius arm bone allow rotational movement
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Different types of joints. Pivot joints - like the one found at the elbow end of the radius arm bone allow rotational movement
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Different types of joints. Pivot joints - like the one found at the elbow end of the radius arm bone allow rotational movement
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Different types of joints. Fixed Hinged Ball and Socket Saddle or Gliding Pivot
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How many bones do you have?
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Human adults have 206 bones
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How many bones do you have? Human adults have 206 bones Human infants have more bones, 275 at birth
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How many bones do you have? Human adults have 206 bones Human infants have more bones, 275 at birth As infants age some of their bones fuse together forming the 206 bones of an adult
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How many bones do you have? Human adults have 206 bones Human infants have more bones, 275 at birth As infants age some of their bones fuse together forming the 206 bones of an adult
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How strong are bones?
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Bone has the strength of steel with only one fifth the weight
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How strong are bones? Bone has the strength of steel with only one fifth the weight But bones do break
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How strong are bones? Bone has the strength of steel with only one fifth the weight But bones do break
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How strong are bones? Bone has the strength of steel with only one fifth the weight And your skeleton shape can be changed
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The parts of the skeleton
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The axial skeleton
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The parts of the skeleton The axial skeleton
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The parts of the skeleton The axial skeleton –includes: –1-- skull cranium 8 bones
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The parts of the skeleton The axial skeleton –includes: –1-- skull cranium 8 bones face 14 bones
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The parts of the skeleton The axial skeleton –includes: –1-- skull cranium 8 bones face 14 bones hyoid 1 bone ears 6 bones
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The parts of the skeleton The axial skeleton –includes: –2 -- Vertebral Column spine 24 bones sacrum 1 bone coccyx 1 bone
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The parts of the skeleton The axial skeleton –includes: –3 -- Thorax ribs 24 bones sternum 1 bone
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The parts of the skeleton The appendicular skeleton
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The parts of the skeleton The appendicular skeleton –this is the system of bones that include the limbs and the bones that attach them to the axial skeleton
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The parts of the skeleton The appendicular skeleton –Includes: pectoral girdle 2 scapula, right and left 2 clavicle, right and left
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The parts of the skeleton The appendicular skeleton –Includes: pectoral girdle upper limbs –2 humerus –2 ulna –2 radius –16 carpals –10 metacarpals –28 phalanges
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The parts of the skeleton The appendicular skeleton –Includes: pectoral girdle upper limbs –2 humerus –2 ulna –2 radius –16 carpals –10 metacarpals –28 phalanges
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The parts of the skeleton The appendicular skeleton –Includes: pectoral girdle upper limbs –2 humerus –2 ulna –2 radius –16 carpals –10 metacarpals –28 phalanges
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The parts of the skeleton The appendicular skeleton –Includes: pectoral girdle upper limbs pelvic girdle 2 bones
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The parts of the skeleton The appendicular skeleton –Includes: pectoral girdle upper limbs pelvic girdle 2 bones lower limbs
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The parts of the skeleton The appendicular skeleton –Includes: pectoral girdle upper limbs pelvic girdle 2 bones lower limbs –femur 2 bones
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The parts of the skeleton The appendicular skeleton –Includes: pectoral girdle upper limbs pelvic girdle 2 bones lower limbs –femur 2 bones –patella 2 bones »(knee)
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The parts of the skeleton The appendicular skeleton –Includes: pectoral girdle upper limbs pelvic girdle 2 bones lower limbs –femur 2 bones –patella 2 bones –lower leg »tibia 2 bones »fibula 2 bones
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The parts of the skeleton The appendicular skeleton –Includes: pectoral girdle upper limbs pelvic girdle 2 bones lower limbs –femur 2 bones –patella 2 bones –lower leg –ankle/foot »tarsals 14 bones »metatarsals 10 »phalanges 28 bones
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