Biology B5a print

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What are the advantages of internal skeletons compared to external skeleton?
its flexibile, its a framework for the body,better movement, bones can grow with the body
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describe the structure of the long bone?
the head covered in cartilage and the shaft with bone marrow
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what effect could a sharp knock cause on a bone ?
although bones are strong they can be easily broken
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explain why elderly people are more prone to fractures ?
the process of osteoporosis which is when bones gradually lose their density and strength making them weaker
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what are the dangers of moving people with fractures ?
the simple fracture can turn into a compound fracture, the cord may get damaged which can lead to paralysation
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describe the types of and range of movement in ball and socket joint and hinge joint ?
a ball and socket joint rotates in various directions but the hinge joint moves only in one direction
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what is ossiofication ?
the process of cartilage being slowly replaced by calcium and phosphorus
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how can you find out a person age using bones?
measure the amount of cartilage left in the bone
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what is a greenstick fracture ?
when a bone is bent but not broken
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what is a simple fracture ?
when a bone is broken within the skin
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what is a compound fracture?
when a broken bone stick outside the skin
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what are the three types of joints ?
fixed joints, hinge joints, ball and socket joints
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how does the bone move ?
bones connected by joints move by a muscle which is attached to by a tendons
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describe the structure of synovial joints and explain the functions.
synovial fluid - absorbs shock. synovial membrane- prevents leakage of the fluid. cartilage- absorbs shock and repairs bones. ligaments - connect the bones
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Card 2

Front

describe the structure of the long bone?

Back

the head covered in cartilage and the shaft with bone marrow

Card 3

Front

what effect could a sharp knock cause on a bone ?

Back

Preview of the front of card 3

Card 4

Front

explain why elderly people are more prone to fractures ?

Back

Preview of the front of card 4

Card 5

Front

what are the dangers of moving people with fractures ?

Back

Preview of the front of card 5
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