Sl 9

Question 1

Sensation

Answer 1

Sensory info brought t our conscious awareness

Question 2

Perception

Answer 2

Understanding of said sensation

Question 3

Sensory transduction

Answer 3

Sensory stimulus is transformed into electrical response

Question 4

A larger stimulus causes

Answer 4

Increased firing rate and greater NT release

Question 5

Adaptation of receptors

Answer 5

Can be fast or slow adapting, sensors will changein sensitivity

Question 6

Tonic receptors

Answer 6

Slow decay of receptor potential, - places that need constant monitoring

Question 7

Phase receptors

Answer 7

Quickly cease response to continued stimuli

Question 8

Primary sensory coding

Answer 8

Conversion of stimulus energy into a signal that can be precived by CNS

Question 9

Sensory unit

Answer 9

Single efferent neuron, and all its receptor endings

Question 10

Receptive field

Answer 10

When stimulated all receptor endings lead to activity

Question 11

Three ways sensory coding is achieved

Answer 11

Stimulus type, strength, location

Question 12

Receptors ore only sensitive to one modality

Answer 12

Adequate stimulus

Question 13

Ascending pathways

Answer 13

Carry info up to the brain

Question 14

Visual cortex corresponds to what lobe

Answer 14

Occipital

Question 15

Auditory cortex is connected to what lobe

Answer 15

Temporal

Question 16

Somatosensory complex lobe

Answer 16

Parietal

Question 17

Propriception

Answer 17

Provide info about are bodies position in space

Question 18

Golgi tendon organs and muscle spinal stretch receptors are what

Answer 18

Mechanoreceptors

Question 19

Golgi tendon organs

Answer 19

Activated by stretch

Question 20

Muscle spindle stretch receptors

Answer 20

Monitor rate of change in muscle length

Question 21

Thermo receptors

Answer 21

originate in issue as free nerve endings

Question 22

TRP proteins

Answer 22

Transient receptor potential proteins that act as temp sensing ion channels

Question 23

What do opioids do

Answer 23

Inhibit neurotransmitter release

Question 24

Why does refereed pain occur

Answer 24

Visceral and somatic affronts coverage on same neurons in spinal cord

Question 25

Sclera of eye

Answer 25

White part of eye

Question 26

Choroid

Answer 26

Posterior = absorbs light, anterior = iris and ciliary muscle

Question 27

Iris

Answer 27

Determines pupil size

Question 28

Retina

Answer 28

Extension of CNS, contains many neurons and photoreceptors

Question 29

Aqueous humor

Answer 29

Anterior chamber filled with viscous fluidI between lens and retina

Question 30

Myopia

Answer 30

Length of eyeball causes light to converge anterior to retina. Can be corrected with concave lens

Question 31

Hyperopia

Answer 31

Light coverages posterior to retina.can be corrected with convex lens Farsightedness

Question 32

Rods

Answer 32

Low level of light, out number cones

Question 33

Cones

Answer 33

' Bright light

Question 34

Photopigments consist of

Answer 34

Opsin protein + chromophonemolecule

Question 35

Photo receptors are

Answer 35

Depolarize at rest and hyper polarized in light

Question 36

In the dark intracellular C GMP is

Answer 36

High + ligand gated channels open

Question 37

In the eye action potentials occur at =, and graded potentials occur at =

Answer 37

Ganglion cells. photoreceptors

Question 38

Middle of ear consists of

Answer 38

Malleuls S incus, stapes

Question 39

Cochlea consists of

Answer 39

Cochlear duct, scala vestibule and tympani. And oval round windows

Question 40

Stereo cilia in ear

Answer 40

Extend to endo lymph and move in response to fluid movement to generate actionpotentials

Question 41

Vestibular system of ear

Answer 41

Contains semicircular canals and utricle and saccule

Question 42

Utricle

Answer 42

Horizontal movement / linear acceleration

Question 43

Saccule

Answer 43

Linear acceleration in vertical plane

Question 44

Semicircular movement

Answer 44

Angular / rotational head movement

Question 45

Tips of stereo cilia responsible for

Answer 45

Depolarization, ap