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All Quiz Cards For Semester 2 Final Exams > Anatomy - The Special Senses - The Ear > Flashcards

Anatomy - The Special Senses - The Ear Flashcards

1
Q

What is the external visible part of the ear called?

A

The pinna.

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2
Q

What is membrane that separates the external ear from the middle ear called?

A

The diaphragm.

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3
Q

Can the pinna move?

A

Yes

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4
Q

What is the large, air-filled space in the temporal bone housing the ear structures called?

A

The tympanic bulla.

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5
Q

What is the snail-shaped structure responsible for hearing called?

A

The cochlea.

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6
Q

The bony labrynth contains a fluid called the __________.

A

Perlymph.

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7
Q

The fluid within the membranous labyrinth of the inner ear is called the ________.

A

Endolymph

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8
Q

The nerve responsible for converting sound vibrations into signals is called the _________.

A

The vestibulocochlear nerve (CN VIII)

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9
Q

What are the bones in the middle ear called?

A

The malleus, incus and the stapes.

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10
Q

Where is the tympanic membrane?

A

Between the external auditory canal and the middle ear.

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11
Q

What nerve comes out of the cochlear?

A

Cochlear nerve

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12
Q

What is attached to the oval window?

A

The stapes

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13
Q

What is the tube that comes out of the middle ear and connects with the nasopharynx?

A

Eustachain Tube

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14
Q

What nerve comes out of the semicircular canals?

A

The vestibular nerve

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15
Q

What tube becomes so large in a horse it gets its own name?

A

The Eustachain tube. Called the guttural pouch.

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16
Q

Is the tympanic bulla strong or weak?

A

Strong

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17
Q

Is the sense of hearing or balance more complex?

A

The sense of balance is more complex

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18
Q

What are the things in the semicircular tubes called?

A

Secular ducts, ampulla, utricle, and saccule.

19
Q

Where is the membranous labyrinth?

A

Inside of the bony labyrinth.

20
Q

What is the organ or corti?

A

An organ in the cochlea that amplifies sound.

21
Q

Where is the organ of corti found?

A

In the cross section of the cochlear between the perilymph, endolymph and the perilymph again.

22
Q

What are the parts of the scale media? Top to bottom.

A

Vestibular membrane, tectorial membrane, and the basilar membrane.

23
Q

What is in between the tectorial membrane and the basilar membrane?

A

The sterocillia and the hair cells.

24
Q

Where is the round window?

A

At the bottom of the cochlear.
Caudal to the oval window.

25
Q

The receptor cells for hearing located within the cochlea are part of the _______.

A

Cochlea hair cells

26
Q

What is the structure that receives vibrations from the stapes and transmits them to the cochlea called?

A

The oval window.

27
Q

What is the structure that detects changes in the head position and orientation in the inner ear called?

A

Utricle and the saccule

28
Q

What is the structure that connects the middle rear to the nasopharynx and helps to equilibrium pressure called?

A

The Eustachain tube.

29
Q

Where are the ampulla located?

A

The round things in the “body” between the semicircular tubes and the cochlea. They are on the ends of the membranous labyrinth.

30
Q

What x-ray view is used to see the tympanic bulla?

A

Open-mouth tympanic bulla view

31
Q

How many semicircular canals are there? What is the angle between each of them?

A

3 and 90°

32
Q

What is the thing called that is for balance in the inner ear called?

A

The Crista of Ampulla.

33
Q

What is the structure called that detects linear acceleration and deceleration in the inner ear called?

A

The two otolith sensors, the utricle and the saccule.

34
Q

What happens when the animals do not have a saccule or utricle?

A

Loss of balance occurs

35
Q

What is the bony labyrinth?

A

The bone that surrounds the the semicircular loops.

36
Q

What fluid is inside of the bony labyrinth?

A

Perilymph.

37
Q

What fluid is filled inside of the membranous labyrinth?

A

Endolymph.

38
Q

What fluid is filled inside of the membranous labyrinth?

A

Endolymph.

39
Q

How are nerve impulses created?

A

The fluid waves cause the tectorial membranes and the cilia & hair cells to rub against eachother causing a signal to be sent through to the cochlear nerve.

40
Q

True or false.
Linear acceleration is when the sensors in the utricle and saccule become slanted.

A

True.

41
Q

True or false.
The macula is an area of sensory epithelium in the utricle only.

A

False. The macula is an area of sensory epithelium in the utricle AND the saccule.

42
Q

What are hair cells?

A

Modified neurons.

43
Q

What is contained in the gel in the utricle and saccule?

A

Ca carbonate crystals.

All Quiz Cards For Semester 2 Final Exams (5 decks)

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