The diagram shows the bones of the human arm - Leaving Cert Biology - Question b - 2010
Question b
The diagram shows the bones of the human arm.
(i) Name the parts labelled A, B and C.
(ii) What structures attach a muscle to a bone?
(iii) Which upper arm muscl... show full transcript
Worked Solution & Example Answer:The diagram shows the bones of the human arm - Leaving Cert Biology - Question b - 2010
Step 1
Name the parts labelled A, B and C.
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Answer
A = Shoulder blade; B = Humerus; C = Ulna.
Step 2
What structures attach a muscle to a bone?
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Answer
Tendons attach muscles to bones.
Step 3
Which upper arm muscle contracts to raise the lower arm?
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Answer
The Biceps muscle contracts to raise the lower arm.
Step 4
What is meant by the term antagonistic pair in reference to muscles?
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Answer
Antagonistic pairs refer to two muscles that work in opposition to each other.
Step 5
Name the type of joint at the elbow.
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Answer
The elbow joint is a hinge or synovial joint.
Step 6
Apart from movement, give one other function of the skeleton.
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Answer
The skeleton provides protection, body support, or is involved in blood cell production and muscle attachment.
Step 7
Suggest one reason why the bones of birds are almost hollow.
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Answer
Birds have hollow bones to be light or to allow flight.
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