Ch. 9 Senses

Question 1

Perception is defined as _____.

Answer 1

The conscious awareness of stimuli perceived by sensory receptors

Question 2

Mechanoreceptor

Answer 2

Response to stimuli, such as the bending, or stretching of receptors

Question 3

Chemoreceptor

Answer 3

Response to order molecules

Question 4

Photoreceptor

Answer 4

Responds to light

Question 5

Thermoreceptor

Answer 5

Responds to temperature changes

Question 6

Nociceptor

Answer 6

Responds to stimuli resulting in pain sensation

Question 7

Receptors typically for free nerve endings?

Answer 7

Painful stimuli
Temperature
Itch
Movement

Question 8

Pain perceived to originate in a region of the body that is not the source of pain is called ____.

Answer 8

Referred pain

Question 9

Vision is a type of _____ sense.

Answer 9

Specialized

Question 10

Sensation is _____.

Answer 10

the process initiated by sensory receptors.

Question 11

The sense of smell occurs in response to _____.

Answer 11

odorants

Question 12

Sensory receptors that respond to light a called _____.

Answer 12

Photoreceptors

Question 13

The most common receptors, which are among the simplest structurally are called _____ endings.

Answer 13

Free Nerve

Question 14

Each olfactory tract terminates in an area of the brain, called the olfactory _____.

Answer 14

cortex 

Question 15

The convergence of deep sensory neurons from an inflamed deep organ and sensory neuron tracts from a superficial region results in pain frequently perceived to be in the superficial region. This pain is called ____ pain.

Answer 15

Referred

Question 16

Very specialized localizes sensory receptors are associated with _____ senses.

Answer 16

special

Question 17

What are the sensory structures that detect a stimuli called?

Answer 17

Taste buds

Question 18

Olfaction is the sense of _____.

Answer 18

Smell

Question 19

Describe the order of structures in the neuronal pathway of taste sensation, beginning with the reception of taste bud, to the cerebral cortex.

(thalamus)
(taste buds)
(cranial nerves VII, IX, and X)
(Brain stem)
(Cerebrum)

Answer 19

1. Taste buds.
2. Cranial nerves VII, IX, and X
3. Brainstem
4. Thalamus
5. Cerebrum

Question 20

A type of receptor the response to bending or stretching, is called a ______.

Answer 20

Mechanoreceptor

Question 21

Blinking involves protecting the eye by closing the _____ as part of a reflex.

Answer 21

Eyelid

Question 22

Where does each olfactory tract terminate?

Answer 22

Olfactory cortex

Question 23

The lenses normally ______.

Answer 23

Transparent

Question 24

Damage to the liver can cause pain in the right shoulder. This is an example of _____.

Answer 24

Referred pain

Question 25

What is the combination of opsin and retinal called?

Answer 25

Rhodopsin

Question 26

Papillae of the tongue are ______.

Answer 26

Enlargements on the surface of the tongue.

Question 27

The cranial nerves involved in taste sensation pathways are _____.

Answer 27

Facial nerve VII Glossopharyngeal nerve IX Vagus nerve X

Question 28

The reflex that involves closing the eyelids to protect the eyes from foreign objects, is the ____ reflex.

Answer 28

Blink

Question 29

The transparent, biconvex disc of the eye is called the ____.

Answer 29

Lense

Question 30

True or false: Light that enters the lens projects to the same side of the retina.

Answer 30

False

Question 31

The photo sensitive pigment in rod cells is called _____.

Answer 31

Rhodospin

Question 32

The sensory structures that detect taste, stimuli are the _____.

Answer 32

Taste buds

Question 33

The function of the eyelid is to _____.

Answer 33

Protect the eye from foreign objects

Question 34

And unblocked opening in the middle ear that opens into the pharynx and enables air pressure to be equalized is called the _____.

Answer 34

Auditory tube/ eustachian tube

Question 35

The nasal visual field projects to the ___ retina, and the temporal visual field projects to the ____ retina.

Answer 35

Temporal, nasal

Question 36

Sound waves will pass through in what order 

Answer 36

1.Auricle 2. External auditory 3. Tympanic membrane 4. Auditory ossicles 5. Oval window 6.Cochlea

Question 37

The tube that can help prevent distortion of the tympanic membrane by equalizing pressure between the middle ear, and the outside environment is called the ____ tube.

Answer 37

Auditory/Eustachian

Question 38

The neurons in the cochlear nucleus project to the brainstem and to the ____ colliculi in the midbrain.

Answer 38

Inferior

Question 39

The two chambers of the vestibule of the inner are are called the _____ and the _____.

Answer 39

Utricle Saccule

Question 40

Initially sound waves are collected by ____ and the are conducted through the external auditory canal toward the ______ membrane in cause it to vibrate. The vibrations cause vibration of 3 auditory _____ of the middle ear.

Answer 40

1. Auricle 2. Tympanic 3. Ossicles

Question 41

Identify the neuronal pathway for hearing from the cochlear nerve to the cerebral cortex. (Cochlear nucleus in the brainstem)(Cochlear nerve)(Auditory cortex of the cerebrum)(Thalamus)(Inferior colliculus)

Answer 41

1. Cochlear nerve 2. Cochlear nucleus in the brainstem 3. Inferior colliculus 4. Thalamus 5.Auditory cortex of the cerebrum

Question 42

Light that enters the lens projects to the ____ side of the retina.

Answer 42

Opposite

Question 43

The utricle and the saccule are the two chambers of this inner ear, organ called the _____.

Answer 43

Vestible

Question 44

What is a condition in which the lenses of the eye lose flexibility with age and impairs ability of the lenses to change shape called?

Answer 44

Presbyopia

Question 45

Identify the structures that are part of the inner ear:

Answer 45

Cochlea Semicircular canals Vestibule 

Question 46

Parts of the external ear (2)

Answer 46

Auricle External auditory canal

Question 47

Parts of the middle ear (3)

Answer 47

Tim panic membrane Auditory ossicles Chorda tympani

Question 48

Parts of the inner ear (8)

Answer 48

Semicircular canals Oval window Vestibulocochlear nerve Cochlear nerve Vestible Cochlea Round window Auditory tube

Question 49

3 Auditory ossicles (M.I.S)

Answer 49

Malleus Incus Stapes