Sensory Systems: Vestibular System
- 1.What is the main purpose of the vesibular system?
- A.
Provides input for body orientation & movement
- B.
Assists in one's sense of hearing
- C.
Convey's info about the body's position/location
- D.
Assists with fine motor movement
- 2.What type of gelantinous material are hair cells of vestibular system in?
- A.
Tectorial membrane
- B.
Cupula
- C.
Otolithic membrane
- D.
A and b
- E.
B and c
- 3.What makes the gelationous material of vestibular system special?
- A.
Low specific gravity
- B.
More weight
- C.
Less viscous
- D.
Higher density
- 4.How much head tilt can the utricle and saccule detect?
- A.
0.1 deg
- B.
0.5 deg
- C.
1 deg
- D.
10 deg
- 5.___________ is sensitive to head tilt from sideways position. _____________ is sensitive to head tilt from the upright position.
- A.
Saccule; utricle
- B.
Saccule; semi circular canals
- C.
Utricle; saccule
- D.
Semicircular canals; ampulla
- 6.When the head is perfectly upright, the utricle is:
- A.
At a 90 deg angle to the head
- B.
At a 30 deg angle to the head
- C.
Perfectly upright
- D.
60 deg angle to the head
- 7.What does the vestibular system detect?
- A.
Static Equilibrium
- B.
Upright Posture
- C.
Linear Acceleration
- D.
All of the above
- E.
2 of the above
- 8.How many functional units do the SSCs (semicircular canals) make?
- A.
1
- B.
3
- C.
6
- 9.The Right Anterior SSC and the Left Anterior SSC make one functional unit
- A.
True
- B.
False
- 10.The Right Lateral SCC and the Left Lateral SCC make one functional unit
- A.
True
- B.
False
- 11.When the hair cells are bent TOWARD the kinocilium the nerve endings:
- A.
Hyperpolarize
- B.
Depolarize
- C.
Reach tonic level dischange
- D.
Reduce the number of action potentials
- 12.What are the SSCs in vestibular system most sensitive to?
- A.
Linear acceleration
- B.
Angular acceleration & rotation
- C.
Sound
- D.
Gravity
- 13.During the beginning of a rotation, the endolymph in the SSC goes in the __________ direction as the rotation, resuting in __________ of hair cells.
- A.
Same; excitation
- B.
Opposite; inhibition
- C.
Same; inhibition
- D.
Opposite; excitation
- 14.The gel-material of the hair cells in the SCCs for the vestibular system is called:
- A.
Tectorial membrane
- B.
Otolithic membrane
- C.
Basilar membrane
- D.
Cupula
- 15.How many nuclei are in the vestibular nuclear complex?
- A.
2
- B.
4
- C.
5
- D.
6
- 16.Where is vestibular sensation transmitted to in the brain?
- A.
VPM of thalamus
- B.
Medial Longitudinal Fasiculus
- C.
VPL of thalamus
- D.
Vestibular Nuclear Complex
- 17.What does the Lateral Vestibulospinal Tract control (reflex)?
- A.
Director of ocular movements
- B.
Interacts with cerebellum for overall motor control
- C.
Postural control
- 18.What does the vestibulo-ocular do and what what tract does it utilize?
- A.
Smooth, horizontal, conjugate eye movements; Medial Lemniscus
- B.
Smooth, vertical, conjugate eye movements; Medial Lemniscus
- C.
Smooth, horizontal, conjugate eye movements; Medial Longitudianl Fasiculus
- D.
Smooth, vertical, conjugate eye movements; Medial Longitudianl Fasiculus
- 19.If you start dozing off in class and your head bobs down and then jerks back up, what reflex is occuring?
- A.
Medial Vestibulospinal Tract
- B.
Medial Longitudinal Fasiculus
- C.
Vestibulocerebellar Reflex
- D.
Lateral Vestibulospinal Tract
- 20.What Brodmann's areas of the post central gyrus does vestibulat sensation information go to?
- A.
3,1,2
- B.
18,19
- C.
6,8
- D.
3
- 21.If there is damage to the vestibulo-cerebellar reflex tract that controls eye movements, what will occur?
- A.
Constant divergence
- B.
Inability to accommodate
- C.
Nystagmus
- D.
Vertical phoria
Questions: 7 | Attempts: 1794 | Last updated: Mar 21, 2022
-
Sample QuestionFrom the answer choicesbelow, which one is NOT afunction of the vestibular system?
Questions: 24 | Attempts: 119 | Last updated: Mar 20, 2022
-
Sample QuestionWhat is the process of extracting of defining the various frequency components of a signal?
Questions: 15 | Attempts: 67775 | Last updated: Mar 22, 2022
-
Sample QuestionThis is the job of the nervous system:
Back to top