Draw a large diagram to show the structure of the human ear, labelling each of the following parts:
pinna
semi-circular canals
stirrup
ear drum
cochlea
Eustachian tube
(ii)
1 - Leaving Cert Biology - Question (b) - 2016
Question (b)
Draw a large diagram to show the structure of the human ear, labelling each of the following parts:
pinna
semi-circular canals
stirrup
ear drum
cochlea
Eustachian t... show full transcript
Worked Solution & Example Answer:Draw a large diagram to show the structure of the human ear, labelling each of the following parts:
pinna
semi-circular canals
stirrup
ear drum
cochlea
Eustachian tube
(ii)
1 - Leaving Cert Biology - Question (b) - 2016
Step 1
Draw a large diagram to show the structure of the human ear, labelling each of the following parts:
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Answer
Begin by drawing a large diagram of the human ear. Ensure that each of the following parts is accurately depicted and clearly labelled:
Pinna
Semi-circular canals
Stirrup
Ear drum
Cochlea
Eustachian tube
Make sure the proportions and locations of each part are correct to reflect anatomical accuracy.
Step 2
Briefly outline the function of the pinna.
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Answer
The function of the pinna is to collect sound waves and direct them into the ear canal, where they are then processed by the inner ear.
Step 3
To which part of the body does the Eustachian tube link the ear?
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Answer
The Eustachian tube links the ear to the throat or pharynx.
Step 4
What is the role of the Eustachian tube?
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Answer
The role of the Eustachian tube is to equalise pressure in the ear, or to relieve (or prevent) pressure imbalances between the external environment and the middle ear.
Step 5
Name another part of the ear that has a function similar to that of the stirrup.
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Answer
Another part of the ear that has a function similar to that of the stirrup is the hammer (or malleus).
Step 6
Suggest why there are three semi-circular canals in each ear.
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Answer
The three semi-circular canals are present to control balance in three dimensions or axes, allowing the body to detect rotational movements effectively.
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