Lecture (3/26) Week 10 Tuesday

Question 1

semi circular canals are an organ of…

Answer 1

balance

Question 2

are their sensory cells in the tubes of the semicircular canals?

Answer 2

no

Question 3

what is it called where the canals attach to the vestibule

Answer 3

ampulla

Question 4

each ampulla contain…

Answer 4

crista ampullaris

Question 5

do crista ampullaris contain ciliated sensory cells?

Answer 5

yes

Question 6

are the cilia linked?

Answer 6

no

Question 7

what are the cilia of the crista ampullaris embedded in?

Answer 7

cupola

Question 8

semi circular canals and ampulla are responsible for…

Answer 8

rotation and angular acceleration

Question 9

as the head rotates, the endolymph in the tube moves in the _____ direction

Answer 9

opposite

Question 10

the stereocilia bending open channels at their root creating a chemical change within the cell and causing a ______

Answer 10

release of neurotransmitter at the base

Question 11

ampulla are the ___ ____ of ____

Answer 11

end organ of balance

Question 12

Where is the utriclosaccular potion located

Answer 12

Located in vestibule
Contains 2 diff membranes

Question 13

Utricle

Answer 13

Into which the ampulla open

Question 14

Saccule lies in

Answer 14

Medial wall

Question 15

Utroclosaccular portion is responsible for

Answer 15

Encoding linear acceleration

Question 16

Otoliths function

Answer 16

Organs detect static head position and linear acceleration

Question 17

Saccule

Answer 17

Vertical acceleration up-and-down, located on back wall facing forward

Question 18

Utricle

Answer 18

Horizontal acceleration, back-and-forth base of ampulla facing up

Question 19

Encoding balance information

Answer 19

Hair cell changes, the mechanical energy of the Celia to electrochemical energy of a graded potential

Question 20

What nerve carries balance information?

Answer 20

8th nerve

Question 21

Striola

Answer 21

Change an orientation of the stereocilia

Question 22

Where do neural projections go?

Answer 22

Vestibular nuclei in medulla

Question 23

Where do neural projection sit?

Answer 23

fourth ventricle

Question 24

The major attracts from the medial lateral and inferior nuclei go where

Answer 24

The cerebellum

Question 25

Info from the superior vestibular nucleus is sent where

Answer 25

Medial longitudinal fasciculus

Question 26

What is the medial longitudinal fasciculus?

Answer 26

a fiber track that runs midline through the medulla ponds and midbrain

Question 27

The superior vestibular nuclei allows for…

Answer 27

Coordination of eye, movement and head neck movement