Touch Smell Taste

Question 1

system that provides information about the body senses, including touch, movement, pain, and temperature.

Answer 1

Somatosensory System:

Question 2

sensory system that
provides information about the position and movement of the head.

Answer 2

Vestibular System:

Question 3

Movement receptors

Answer 3

• otolith organ
• semicircular canal
• saccule
• linear acceleration
• otolith

Question 4

structure in the inner ear vestibular system that provides information
about the angle of the head relative to the
ground and about linear acceleration.

Answer 4

Otolith Organ:

Question 5

one of three looping chambers found in inner ear that provide information regarding the rotation of the head.

Answer 5

Semicircular Canal

Question 6

one of structures of otolith organs.

Answer 6

Saccule

Question 7

: one of the structures of the otolith
organs.

Answer 7

Utricle

Question 8

: force perceived when our rate of movement changes.

Answer 8

Linear Acceleration

Question 9

: stone made of calcium carbonate that is attached to the hair cells in the otolith
organs

Answer 9

Otolith

Question 10

Central pathways

Answer 10

• Ventral posterior (VP) Nucleus
• primary somatosensory cortex
• Glabrous Skin
• epidermis
• dermis
• subcutaneous Tissue

Question 11

nucleus of
the thalamus that receives information regarding pain, touch, and the position and movement of the head.
.

Answer 11

Ventral Posterior (VP) Nucleus:

Question 12

cortex located in the postcentral gyrus of the parietal lobe that is responsible for the initial
cortical processing of somatosensory input.

Answer 12

Primary Somatosensory Cortex:

Question 13

: hairless skin.

Answer 13

Glabrous Skin

Question 14

: outermost layer of the skin.

Answer 14

Epidermis

Question 15

: layer of skin lying below the outermost epidermis.

Answer 15

Dermis

Question 16

layer of tissue lying
below the dermis

Answer 16

Subcutaneous Tissue:

Question 17

Touch Receptors

Answer 17

• mechanoreceptors
• encapsulated receptor
• Meissner’s corpuscle
• Pacinian corpuscle
• Merkel’s disk
• Ruffini’s ending

Question 18

: skin receptor that senses touch, pressure, or vibration.

Answer 18

Mechanoreceptor

Question 19

mechanoreceptor in which the axon fibers are surrounded by a
fluid-filled capsule formed of connective tissue

Answer 19

Encapsulated Receptor:

Question 20

: encapsulated, fast-
adapting mechanoreceptor with small receptive field that responds primarily to pressure.

Answer 20

Meissner’s Corpuscle

Question 21

encapsulated, rapidly
adapting mechanoreceptor with large receptive field that provides information about pressure and vibration.

Answer 21

Pacinian Corpuscle:

Question 22

nonencapsulated, slow-
adapting mechanoreceptor with small receptive field that provides information primarily about pressure.

Answer 22

Merkel’s Disk:

Question 23

non encapsulated, slow-
adapting mechanoreceptor with large
receptive field that provides information
regarding stretch.

Answer 23

Ruffini’s Ending:

Question 24

myelinated fiber that
carries information about cold and sharp pain to the central nervous system.

Answer 24

Aδ (alpha-delta) Fiber

Question 25

small, unmyelinated fiber that carries information about temperature, itch, and dull, aching pain to the central nervous system.

Answer 25

C Fiber:

Question 26

: area of the skin surface served by the dorsal roots of one spinal segment.

Answer 26

Dermatome

Question 27

spinal pathway that carries information about touch and position to the medulla.

Answer 27

Dorsal Column:

Question 28

pathway originating in the dorsal column nuclei and synapsing in the ventral posterior (VP) nucleus of the thalamus that is responsible for carrying information about touch and position.

Answer 28

Medial Lemniscus:

Question 29

nerve that carries Sensation from mechanoreceptors, temperature receptors, and pain receptors in the skin of the face, mouth, tongue, & the dura mater of the brain.

Answer 29

Trigeminal Nerve (cranial nerve V):

Question 30

areas in the parietal lobe adjacent to primary somatosensory cortex that process a wide variety of complex somatosensory inputs.

Answer 30

Secondary Somatosensory Cortex:

Question 31

: nerve ending in the skin that responds to surface temperature.

Answer 31

Thermoreceptor

Question 32

nerve ending in the skin that responds to heat.

Answer 32

Warm Fiber:

Question 33

nerve ending in the skin that responds to cold.

Answer 33

Cold Fiber:

Question 34

: nerve ending that responds to painful stimuli.

Answer 34

Nociceptor

Question 35

a: group of cells in the outer gray matter of the dorsal horn that receive synapses from pain fibers.

Answer 35

Substantia Gelatinos

Question 36

neurotransmitter substance associated with the sense of pain that also serves as a stimulus at some nociceptors.

Answer 36

Substance P:

Question 37

: fibers that carry pain and temperature information from the substantia gelatinosa to the thalamus.

Answer 37

Spinothalamic Pathway

Question 38

nucleus in the brainstem that receives pain and temperature information from the head and neck.

Answer 38

Spinal Trigeminal Nucleus:

Question 39

pathway carrying pain and temperature information from the spinal trigeminal nucleus to the thalamus.

Answer 39

Trigeminal Lemniscus:

Question 40

one of many nuclei in the thalamus that receive some pain and temperature input.

Answer 40

Intralaminar Nucleus:

Question 41

: the sense of smell.

Answer 41

Olfaction

Question 42

layer in the nasal cavity containing olfactory receptors.

Answer 42

Olfactory Epithelium:

Question 43

: structures found within the olfactory bulbs.

Answer 43

Glomeruli

Question 44

fiber pathway connecting the olfactory bulbs to the olfactory cortex.

Answer 44

Olfactory Tract:

Question 45

: cortex in the frontal lobe that responds to the sense of smell.

Answer 45

Olfactory Cortex

Question 46

: one of the five basic taste groups, characteristic of tastes found in seaweed and other “meaty or savory” elements of Asian cuisine.

Answer 46

Umami

Question 47

: bumps on the tongue containing taste buds and taste receptors.

Answer 47

Papillae

Question 48

: small fibers extending from taste receptors.

Answer 48

Microvilli

Question 49

nucleus of the thalamus that receives information regarding taste.

Answer 49

Ventral Posterior Medial (VPM) nucleus of the thalamus: