Peripheral vestibular

Question 1

the peripheral vestibular system has __ organs total

Answer 1

5

Question 2

2 of the 5 organs in the peripheral vestibular system are called _________ organs

Answer 2

macular

Question 3

the 2 macular organs in the peripheral vestibular system are called macular organs, these organs are responisble for _______

Answer 3

linear acceleration; gravity/ tilt

Question 4

3 of the 5 organs of the peripheral vestibular sytem are called __________ organs

Answer 4

semicircular

Question 5

the 3 semicircular organs in the peripheral vestibular system are called semicircular organs, these organs are responisble for _______

Answer 5

angular accelaration; turning

Question 6

describe the semi- circular canals

Answer 6

organ of balance, 3 canals in 3 diff planes
they are tubes made of membrane filled w/ endolymph

Question 7

T/F: there are no sensory cells in the tubes that make up the semi-circular canals

Answer 7

true

Question 8

what are ampulla

Answer 8

bulges where the canals where the canals attach to the vestibule

Question 9

Each ampulla contain _______ ________

Answer 9

crista ampullaris

Question 10

What are crista ampullaris

Answer 10

each ampulla coins this; it is the end organ for balance

Question 11

crista ampullaris contain ______ _______ cells

Answer 11

ciliated sensory

Question 12

What is cupola

Answer 12

gelatinous mass that embeds cilia

Question 13

what is cupola composed of

Answer 13

crystalized lime

Question 14

Semi circular canals and ampulla are responisble for what?

Answer 14

rotation or angular accelaration

Question 15

T/F: Semi circular canals and ampullas physiology are very different

Answer 15

false we dont know the physiological difference between semi circular canals and ampullas

Question 16

As the head rotates the endolymph with the membranous tube moves in what direction? ( same or opposite)

Answer 16

opposite

Question 17

The stereocilia bending open their canals at the root creating a chemical change within the cell causing a release of a ___________ at the base

Answer 17

neurtransmitter

Question 18

Describe the Utriclosaccular Portion

Answer 18

Located in vestibule; 2 different membranes sacs contain sensory cells and endolymph

Question 19

Ampulla open into what

Answer 19

utricle

Question 20

The saccule in the utriclosaccular portion lie on the ______ wall

Answer 20

medial

Question 21

What are the sensory cells in the utricle and saccule called

Answer 21

maculae

Question 22

In the maculae, The stereocilia are covered by a gelatinous mass made of calcium carbonate
crystals called

Answer 22

otoliths

Question 23

Otoliths are responsible for encoding _______ ___________

Answer 23

linear acceleration

Question 24

The saccule = ________ acceleration ( _____ and ______) and located on the back wall facing ________

Answer 24

vertical; up and down; forward

Question 25

The utricle= __________ acceleration (______ and _______) and base of ampulla facing _____

Answer 25

horizontal; back and forth; up

Question 26

The cilia at the top of the cells move as the ______ moves

Answer 26

fluid

Question 27

the cilia at the top of the cells are anchored in the _________ or _________

Answer 27

otoliths or cupola

Question 28

The hair cells changes the __________ energy of the cilia to ___________ energy of a graded potential

Answer 28

mechanical; electrochemical

Question 29

carried by the vestibular portion of the VIIIth nerve??????