Special Senses lab

Question 1

4 types of sensory receptors in skin/muscles/tendons

Answer 1

Tactile corpuscles
Lamellated corpuscles
Free nerve endings
Proprioreceptors

Question 2

Ascending pathways of white matter

Answer 2

Brings information from spinal cord up to brain

Question 3

Descending pathways of white matter

Answer 3

Brings information from brain down to spinal cord

Question 4

Sensory neurons

Answer 4

Deliver sensory impulses to the CNS

Question 5

Interneurons

Answer 5

Form links between sensory & motor neurons, act as relay stations for transmission of impulses from one part of brain or spinal cord to another

Question 6

External structures that help protect eye

Answer 6

Eyelash
Eyelid
Lacrimal gland
Nasolacrimal duct

Question 7

Layers of the eye wall

Answer 7

Sclera
Choroid
Retina

Question 8

Structures that light passes through before hitting photoreceptors

Answer 8

Cornea
Iris (w/ pupil)
Lens

Question 9

Retina

Answer 9

Contains photoreceptors, inner layer of the eye wall

Question 10

Rods

Answer 10

Photoreceptors for grey tones

Question 11

Cones

Answer 11

Photoreceptors for color

Question 12

Optic disc

Answer 12

“Exit point” for sensory axons

Question 13

Optic nerve

Answer 13

Bundle of axons from eye to brain

Question 14

Iris w/ pupil

Answer 14

Changes shape to change amount of light entering eye

Question 15

Lens

Answer 15

Changes shape to change focus of eye

Question 16

Sclera

Answer 16

White of the eye, outside layer of eye wall

Question 17

External structures of the ear

Answer 17

Ear canal
Pinna
Eardrum

Question 18

Middle ear (tympanic cavity)

Answer 18

Malleus (hammer)
Incus (anvil)
Stapes (stirrup)
Auditory tube

Question 19

Inner ear

Answer 19

Vestibule
Semicircular canals
Cochlea
Oval window

Question 20

Motor neurons

Answer 20

Deliver motor impulses from CNS to effector organ