Ch.10 Part B Flashcards
2) Why are there three semicircular canals.
2) The 3 planes Coronal sagittal and transverse
3) What common visual defect would use a convex lens to correct it?
3) Hyperopia.
4)why do we have a blind spot
4) There are no photoreceptors on the optic disc
5)what special sense helps with orientation
5) Vision
6)how do the semicircular canals generate action potentials
6) Fluid Moves when the cupola bends hair cells sending a signal
7)what is the gravity sensor in the head
7) Otolith organ.
8) what mechanoreceptor sense positions of joints/appendages
8) Proprioceptors.
9)what is the difference between the optic dics the fovea centralists and the macula of the eye?
9) Optic disc- blind spot region where optic nerve and blood vessel leave the eye
fovea- region of sharpest vision
macula-the center of the visual field
10)what is the function of accommodation ?
10) its the process by which the eye adjust the shape of the lens to keep object in focus
11)what common visual defect is also known as farsightness
11) Hyperopia
13)why do nocturnal animals need to have a tapedum
13) Increase reflection.
14)what vestibular structures would tell you theater or not your head is upright
14) Otolith organ.
15)what is the name of the hole in the middle of the iris ?
15) pupil
16) what is the effect of tilting your head to the side on the structure within the otolith organs
16) The otoliths move due to gravity
17)what structure provides information about movement and position in space
17)otolith
18)what do sensory neurons produce when stimulated by hair cells
18) Action potential.
19)which sensory cells would be most active at night and why
19) Rods.
20)what is an area that has the highest concentration of cones for facial recognition and reading
20)fovea/macula.
21)why do the crystals of the otolith organs move to the bottom of their chamber
21)due to gravity/ Heavy density.
22)what common visual defect would use a concave lens to correct it?
22) Myopia
23) mechanoreceptor included in equilibrium are incited in what three types of body information
23)Body balance position and movement
24)what brain structure is a pathway for all incoming signals from the body
24)medulla
25)what structures in the semicirculr canals move as the endolymph flows past them
25)cupula
26)what structure do nocturnal animals have behind their retinas that reflect light
26)tapetum lucinium
27)what structure associated with both hearing and equilibrium generate signals that are interpreted by sensory neurons as a stimulus
27) Hair cells.
28)What vestibular structure contain fluid that does not move when you move your head ?
28)Semicircular canal
29)what common visual defect is also known as near sightedness
29)myopia
30)what do the semicircular canals sense
30) Rotation or equilibrium.
31)which sensory cells are used to detect color and details
31) cones
32)what is the function of the pupil
32) pupil limits light lens focuses light
33)what Is the function of rods and cones in the retina
33) Rods- night vision shades of grey only
Cones- color and detail used for reading, facial recognition
35)what is the difference between a convex and concave lens in terms of reasons for use and function
35) Convex- Ligament that shrivels in that produces the fat shape.
Concave- Ligaments stretch out, allowing light to go in.
36)what common visual defect occurs when the focal point falls in front of the retina
36)myopia
37)what brain structure contains behavior patterns like how to play a piano
37) Cerebellum.
39)what brain structure is involved in making design based on sensory information
39) Cerebral Cortex
40)what is the name of the action of the eye adjusting the shape of the lens?
40) convex lens
41)what two actions cause the lens to flatten or thicken for accommodation
41) ciliary muscle contraction, ligament
42)what common visual defect overs when the focal point falls behind the retina
42)hyperopia
43)how are images projected onto the retina
43) image is upside down
44)what are theme of the two types of sensory cells of the retina
44) rods and cones
45)what result from a defect in one or more of the three types of cone
45)color blindness
46)what is the primary visual pigment in the visual cells
46)opsin / rhodopsin
47)how is the stimulus in vision so different the that for all other sensory cell
47) the more light that is being seen the less ACh is being released
48)which sensory cells are used to detect shades of light dark and grey only
48) Rods
49)which sensory cells would be most active during the day and why
49) cone cells there used for reading and facial recognition
50) Which sensory cells would be most affected if you had all recessive genes for color blindness.
50) Cones
51) What is the function of the melanin granules on the posterior surface of the retina.
51) Absorbs light. / Prevents reflection
