Development And Histology Of The Ear (Msq Drill 272)
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- 1.
Do the three parts of the ear develop together or separately?
- A.
Together
- B.
Separately
Correct Answer
B. Separately -
- 2.
What layer does the ear develop from?
- A.
Mesoderm
- B.
Endoderm
- C.
Ectoderm
- D.
Neuroderm
Correct Answer
C. Ectoderm -
- 3.
What is the name of the structure that the inner ear develops from?
- A.
Bony labyrinth
- B.
Otic vesicle
- C.
Mesoderm
- D.
Utricle
- E.
Vestibule
Correct Answer
B. Otic vesicle -
- 4.
The nerve to the inner ear develps from the neural crest cells: true or false
- A.
False
- B.
True
Correct Answer
A. FalseExplanation
It is thought to develop from ectoderm.Rate this question:
-
- 5.
The inner ear starts to develop at day
- A.
18
- B.
20
- C.
22
- D.
24
- E.
26
Correct Answer
D. 24 -
- 6.
As the otic vesicle is occuring where is the ear migrating to?
- A.
The PNS
- B.
The rostral part of the face
- C.
The lateral part of the face
- D.
The CNS
Correct Answer
D. The CNS -
- 7.
During which week does the otic vesicle separate into the endolymphatic sac, utricular and saccular portions?
- A.
3rd week
- B.
4th week
- C.
7th week
- D.
8th week
- E.
5th week
Correct Answer
E. 5th week -
- 8.
The ventral protion of the tube known as the saccula develops a _______ outgrowth
- A.
Rectangulat
- B.
Circular
- C.
Tubular
- D.
Oval
Correct Answer
C. Tubular -
- 9.
The tubular protion spirals around to form the
- A.
Utricle
- B.
Cocchlea
- C.
Stapes
- D.
Malleolus
Correct Answer
B. Cocchlea -
- 10.
What is the inner ear structure for hearing
- A.
Utricle
- B.
Vestibule
- C.
Cocchlea
- D.
Tympanic membrane
Correct Answer
C. Cocchlea -
- 11.
What is the thin attachement between the cocchlea duct and the saccule?
- A.
Ductus reunicas
- B.
Ductus longus
- C.
Ductus femoris
- D.
Ducuts vermiculus
Correct Answer
A. Ductus reunicas -
- 12.
Part of the otic vesicle is absorbed by the_______ during the 5th week.
- A.
Ectoderm
- B.
Mesoderm
- C.
Endoderm
- D.
Neuroderm
Correct Answer
B. Mesoderm -
- 13.
The adsorption focus take on the shape of the
- A.
Eustachian tube
- B.
Round windows
- C.
Oval window
- D.
Semicircular canals
Correct Answer
D. Semicircular canals -
- 14.
The bulging area below the semicircular canal is the
- A.
The oval window
- B.
Vestibule
- C.
Utricle
- D.
The round window
Correct Answer
C. Utricle -
- 15.
What surrounds the whole structure of the ear that eventually becomes the bony structure of the ear?
- A.
Ectoderm
- B.
Endoderm
- C.
Neuroderm
- D.
Neuroectoderm
- E.
Mesoderm
Correct Answer
E. Mesoderm -
- 16.
Within the cochlea the entire lining of the derivatives is made up of
- A.
Cuboidal epithelium
- B.
Statified squamous epithelium
- C.
Squamous epithelium
- D.
Pseudostratified epithelium
Correct Answer
C. Squamous epithelium -
- 17.
The lining on the inside of the cochlea and vestibular system is derived from the
- A.
Otic vesicle
- B.
Mesoderm
- C.
Neuronal crest cells
- D.
Pharyngeal pouch 1
Correct Answer
A. Otic vesicle -
- 18.
The space between the product of the otic vesicle and the bony wall is filled with
- A.
Endolymph
- B.
Peri lymph
- C.
Para lymph
- D.
CSF
Correct Answer
B. Peri lympH -
- 19.
All the derivatives of the otic vesicle are filled with
- A.
Peri lymph
- B.
Endolymph
- C.
Hila lymph
- D.
CSF
Correct Answer
B. EndolympH -
- 20.
Neurons in the ear developed from the ectoderm, they are located in the spongy bony area called the
- A.
Labyrinth
- B.
Modiolus
- C.
Vestibule
- D.
Cocchlea
Correct Answer
B. Modiolus -
- 21.
The spiral ligament and bony canal are of __________ origin
- A.
Endodermal
- B.
Ectodermal
- C.
Mesodermal
- D.
Neuroectodermal
Correct Answer
C. Mesodermal -
- 22.
The spiral ligament that starts at the end of the modiolus is of _______ placode origin.
- A.
Ectodermal
- B.
Endodermal
- C.
Neural
- D.
Mesodermal
Correct Answer
C. Neural -
- 23.
The cocchlea duct is also known as the
- A.
Utricle
- B.
Vestibule
- C.
Scala media
- D.
Ancus
Correct Answer
C. Scala media -
- 24.
The neurons that are found in the modiolus are also known as
- A.
Auditory crest cells
- B.
Astroglial cells
- C.
Auditory microglial cells
- D.
Spiral ganglia
Correct Answer
D. Spiral ganglia -
- 25.
Where do the middle and external ear develop from?
- A.
Posterior medulla
- B.
Rostral medulla
- C.
Pharyngeal area
- D.
Notochord
Correct Answer
C. pHaryngeal area -
- 26.
The external ear comes from branchial arches 1 and 2. 1 gives rise to the anterior helix and 2 gives rise to the
- A.
Middle ear
- B.
Stapes
- C.
Antitragus and posterior helix
- D.
Ancus
Correct Answer
C. Antitragus and posterior helix -
- 27.
Where do the external auditory meatus and canal come from?
- A.
5th pharyngela arch
- B.
2nd branchial groove
- C.
2nd pharyngeal arch
- D.
1st pharyngeal arch
- E.
1st branchial groove
Correct Answer
E. 1st branchial groove -
- 28.
The middle ear is derived from the
- A.
2nd pharyngeal pouch
- B.
1st pharyngeal pouch
- C.
1st branchial groove
- D.
2nd branchial groove
Correct Answer
B. 1st pHaryngeal pouch -
- 29.
The malleus and the incus are from the
- A.
1st pharyngeal arch
- B.
2nd pharyngeal arch
- C.
1st branchial groove
- D.
2nd brnachial groove
Correct Answer
A. 1st pHaryngeal arch -
- 30.
The second pharyngeal arch has cranial nerve _____ . The stapes is also from of this arch.
- A.
5
- B.
6
- C.
7
- D.
8
- E.
9
Correct Answer
C. 7 -
- 31.
The external auditory canal forms from the
- A.
1st pharyngeal groove
- B.
2nd pharyngeal groove
- C.
3rd pharyngeal groove
- D.
3rd pharyngeal groove
Correct Answer
A. 1st pHaryngeal groove -
- 32.
The eustachian tube is formed from the
- A.
1st pharyngeal pouch
- B.
2nd pharyngeal pouch
- C.
3rd pharyngeal groove
- D.
1st branchial arch
Correct Answer
A. 1st pHaryngeal pouch -
- 33.
The second arch cartillage is going to give rise to the
- A.
Malleolus
- B.
Ancus
- C.
Tympanic membrane
- D.
Eustachian tube
- E.
Stapes
Correct Answer
E. Stapes -
- 34.
What envelopes all the oscicles and has a connection to the pharynx via the future eustachian tube?
- A.
Pharyngeal pouch
- B.
Mesoderm
- C.
Pharyngeal groove
- D.
Branchial groove
Correct Answer
A. pHaryngeal pouch -
- 35.
The tympanic membrane has an outer layer of statified squamous epithelium outside and simple squamous inside due the presense of ectoderm outside and ____ inside
- A.
Endoderm
- B.
Mesoderm
- C.
Ectoderm
- D.
Neuroderm
Correct Answer
A. Endoderm -
- 36.
The eustachian tube was the
- A.
First branchial pouch
- B.
First branchial groove
- C.
First pharyngeal pouch
- D.
2nd pharyngeal pouch
Correct Answer
C. First pHaryngeal pouch -
- 37.
The structure between the stapes and the opening into the otic capsule is the ______ window.
- A.
Round window
- B.
Tympanc membrane
- C.
Oval window
- D.
Eustachian tube
Correct Answer
C. Oval windowExplanation
2 layer of epithelium and 1 layer of ectodermRate this question:
-
- 38.
_____ surround inner ear structures
- A.
Hilar lymph
- B.
Endolymph
- C.
Perilymph
Correct Answer
C. PerilympH -
- 39.
The rest of the ear is filled with
- A.
Endolymph
- B.
Perilymph
- C.
CSF
Correct Answer
A. EndolympH -
- 40.
How many communications exist between the inner ear and outer ear?
- A.
1
- B.
2
- C.
3
- D.
4
- E.
5
Correct Answer
B. 2Explanation
pressure to the oval window is equalized by pressure of the round windowRate this question:
-
- 41.
At the end of the external ear canal there is a plug of ______ during development.
- A.
Crest cells
- B.
Mucous
- C.
Bone
- D.
Tissue
Correct Answer
D. TissueExplanation
As the fetus develops the tissue dissapears and the mesoderm in the top of the tympanic cavity also dissapearsRate this question:
-
- 42.
The typmanic membrane is from: Check all that apply.
- A.
Neuroderm
- B.
Endoderm
- C.
Mesdoderm
- D.
Ectoderm
Correct Answer(s)
B. Endoderm
C. Mesdoderm
D. Ectoderm -
- 43.
The tympanic cavity is _______ filled
- A.
Water
- B.
Air
- C.
Perilymph
- D.
Endolymph
Correct Answer
B. Air -
- 44.
What is the fluid that is initially displaced by the stapes & which pushes back on the round window?
- A.
There s no fluid, it is air displacement
- B.
Endolymph
- C.
Perilymph
- D.
Water
- E.
CSF
Correct Answer
C. PerilympH -
- 45.
The membranous labyrinth is from the
- A.
Utricle
- B.
Otic vesicle
- C.
Mesoderm
- D.
Endoderm
Correct Answer
B. Otic vesicle -
- 46.
What transmits proprioceptive information to the brain via the vestibular division of the cranial nerve 8 regarding the position and movement of the head - i.e. equilibrium.
- A.
Middle ear
- B.
Outer ear
- C.
Eustachian tube
- D.
Internal ear
- E.
Tympanic membrane
Correct Answer
D. Internal ear -
- 47.
Is transmission of auditory information to the brain via the cochlear division another function of the internal ear or middle ear
- A.
Middle ear
- B.
Internal ear
- C.
Both
Correct Answer
B. Internal ear -
- 48.
Are the cells for auditory and balance senses similar?
- A.
No
- B.
Yes
Correct Answer
B. Yes -
- 49.
The internal ear is derived from the
- A.
Mesoderm
- B.
Labyrinth
- C.
Otic vesicle
- D.
Neuroendoderm
Correct Answer
C. Otic vesicle -
- 50.
Stratified squamous epithelium lines the outisde of this structure.
- A.
Oval window
- B.
Tympanic membrane
- C.
Round window
- D.
Eustachian tube
Correct Answer
B. Tympanic membrane -
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