Sensory Receptors

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1. 
Distinguish among the functions of Pacinian corpuscles, Meissner's corpuscles, and pain receptors in the skin.
 
sense pressure and deep touch; light touch; heat
 
2. 
What is the punctate distribution?
 
uneven distribution of the sense organs
 
3. 
What is a modality?
 
primary types of sensation
 
4. 
What kind of receptors are sensitive to the following modalities?
lighttouchtemperaturesoundsmell
 
light- phototouch- mechanotemperature- thermosound- mechanosmell- chemo
 
5. 
What kind of receptor determines the weight of an object when you pick it up?
 
Proprioreceptor
 
6. 
What nerves transmit the sense of smell to the brain?
 
Olfactory nerve fibers
 
7. 
What nerves transmit the sense of taste to the brain?
 
glossopharyngeal, facial, vagus nerve
 
8. 
Where are the taste buds located?
 
the sides of the tongue
 
9. 
Since the lens is made of protein, what effect might the preserving fluid be used in lave have on the structure of the lens? How would this affect clarity?
 
might cause lens to get cloudy
 
10. 
How does the viterous body differ from the aqueous humor in terms of location and viscosity?
 
Vitreous- jelly like; posteriorAqueous- liquid; anterior
 
11. 
What layer of eye converts visible light into nerve impulses?
 
photo receptors of the retina
 
12. 
What nerve takes the impulse of sight to the brain?
 
optic nerve
 
13. 
THe common name for the sclera?
 
white of the eye
 
14. 
HOw would you define an extrinsic muscle of the eye?
 
they work together to create eye movement;
 
15. 
What gland produces tears?
 
lacrimal gland
 
16. 
What is the name of the transparent layer of the eye in the front anterior chamber?
 
cornea
 
17. 
The iris of the eye has what function?
 
opening and closing pupil
 
18. 
What is the middle tunic of the eye called?
 
pupil
 
19. 
Is the lens anterior or posterior to the iris?
 
posterior
 
20. 
What is at the area of the eye where the blind spot is found?
 
optic disc
 
21. 
What are the three general regions of the ear?
 
outer, middle, inner ear
 
22. 
The ear preforms what two major sensory functions? What are they?
 
hearing and equilibrium
 
23. 
What area is found between the scala vestibuli and the scala tympani?
 
Cochlear duct
 
24. 
What part of the inner ear is involved in perciving static equilibrium?
 
Vestibule
 
25. 
What tube is responsible for the equalization of pressure when you change elevation?
 
eustachian (auditory) tube
 
26. 
What is the name of the space that encloses the ear ossicles?
 
tympanic cavity
 
27. 
Place the ear ossicles in sequence fromt he tympanic membrane to the oval window.
 
malleus, incus, stapes