Interactive ear anatomy worksheet with a labeled diagram and fill-in-the-blank questions.

I need to solve this worksheet about parts of the ear. Let me work through each question carefully.

Looking at the matching section:
1. "outer ear" - This is the visible part we see
2. "pinna" - The outer flap of the ear
3. "ear canal" - The tube leading inward
4. "eardrum" - Vibrates when sound hits it
5. "cochlea" - Shaped like a snail, converts vibrations to signals
6. "auditory nerve" - Carries signals to brain
7. "middle ear" - Contains three tiny bones
8. "oval window" - Membrane between middle and inner ear
9. "stapes" - Smallest bone in body
10. "semicircular canals" - Help with balance

Let me match these with the descriptions:

a. "It collects sounds from the air and sends them into the ear canal" → This describes the pinna (outer flap)

b. "Made up of the pinna and ear canal" → This is the outer ear

c. "A tube that carries sound waves to the eardrum" → This is the ear canal

d. "Vibrates when sound waves hit it and sends the vibrations to the middle ear" → This is the eardrum

e. "Contains three tiny bones called ossicles" → This is the middle ear

f. "The smallest bone in the human body" → This is the stapes

g. "Shaped like a snail shell; changes vibrations into electrical signals" → This is the cochlea

h. "Carries electrical signals from the cochlea to the brain" → This is the auditory nerve

i. "Helps us keep our balance" → These are the semicircular canals

j. "A membrane between the middle ear and inner ear" → This is the oval window

Now for the diagram labels, I need to identify which letter corresponds to which part based on their positions in the ear anatomy.

Let me verify my matches:
- Pinna = a (collects sounds) ✓
- Outer ear = b (made of pinna + ear canal) ✓
- Ear canal = c (tube carrying sound to eardrum) ✓
- Eardrum = d (vibrates when sound hits it) ✓
- Middle ear = e (contains ossicles) ✓
- Stapes = f (smallest bone) ✓
- Cochlea = g (snail-shaped, converts vibrations) ✓
- Auditory nerve = h (carries signals to brain) ✓
- Semicircular canals = i (balance) ✓
- Oval window = j (membrane between middle/inner ear) ✓

For the diagram, typically:
- A would be the pinna (outermost visible part)
- B would be the ear canal
- C would be the eardrum
- D would be the middle ear area (ossicles)
- E would be the cochlea (snail-shaped structure)
- F would be the semicircular canals
- G would be the auditory nerve

Final Answer:

Matching:
1. outer ear - b
2. pinna - a
3. ear canal - c
4. eardrum - d
5. cochlea - g
6. auditory nerve - h
7. middle ear - e
8. oval window - j
9. stapes - f
10. semicircular canals - i

Diagram Labels:
A - Pinna
B - Ear canal
C - Eardrum
D - Middle ear (or ossicles/stapes)
E - Cochlea
F - Semicircular canals
G - Auditory nerve