CH 12: Nervous System III: Senses

Question 1

2 Receptor Types

Answer 1

Chemoreceptors

Pain Recepters

Question 2

Sensors that detect changes in CO2, O2, and pH, and have been classified, based upon anatomical location, as either central or peripheral.

Answer 2

Chemoreceptors

Question 3

Receptor that responds to tissue damage

Answer 3

Pain receptor

Question 4

Nociceptor prefix “nocio” means what?

Answer 4

Obnoxious stimuli. (Something painful)

Question 5

Cranial Nerve I name and sense.

Answer 5

Olfactory (smell)

Question 6

Responds to chemical concentration changes.

Answer 6

Cranial Nerve I Olfactory (Smell)

Question 7

The ability to ignore unimportant stimuli is known as what?

Answer 7

Sensory adaptation

Question 8

Which sense does not adapt?

Answer 8

Pain

Question 9

List the 3 groups of “General Senses”

Answer 9

1. ) Exteroceptive Senses
2. ) Visceroceptive Senses
3. ) Proprioceptive Senses

Question 10

External senses that are associated with body surface, touch pressure, temp, and pain.

Answer 10

Exteroceptive Senses

Question 11

These senses pertain to an organ and are associated with changes in the viscera, such as BP stretching vessels, and ingestion of food.

Answer 11

Visceroceptive Senses

Question 12

Associated with changes in muscles and tendons, such as joints. Awareness of your body in space

Answer 12

Proprioceptive senses

Question 13

What is the function of the Tactile (Meissner’s) Corpuscles?

Answer 13

To detect fine touch; distinguish between 2 points on skin.

Question 14

What is the function of the Lamellated (Pacinian) Corpuscles?

Answer 14

To detect heavy pressure and vibrations.

Question 15

This corpuscle is a mechanoreceptor and contains Alpha Fiber “fast”

Answer 15

Tactile (Meissner’s) Corpuscle

Question 16

This corpuscle is a nociceptor of C-Fibers “slow”

Answer 16

Lamellated (Pacinian) Corpuscle

Question 17

Name the myelinated corpuscle.

Answer 17

Tactile (Meissner’s) Corpuscle

Question 18

Name the unmyelinated corpuscle.

Answer 18

Lamellated (Pacinian) Corpuscle

Question 19

Name 3 thermoreceptors

Answer 19

Warm
Cold
Pain

Question 20

What is the sensitivity to temp for warm thermoreceptors?

Answer 20

Greater than 77F (25C)

Question 21

What is the sensitivity to temp for cold thermoreceptors?

Answer 21

Between 50f and 68F

Question 22

What is the sensitivity to temp for pain thermoreceptors?

Answer 22

Temps below 10C and greater than 45C

Question 23

Describe a nocioceptor.

Answer 23

Pain fiber, c-fibers “slow”, unmylenated.

Question 24

Pain receptors are not well localized, they may feel like they’re coming from another part of the body.

Answer 24

Referred Pain

Question 25

Which organ has the largest referred pain pattern?

Answer 25

Kidneys

Question 26

Describe the kidneys referred pain pattern.

Answer 26

Lower abdomen, lower back, inner and outer thighs.

Question 27

Where might you feel referred pain from your liver and/gallbladder?

Answer 27

Upper right quadrant and/or right side of neck.

Question 28

Which pain fibers are A-Delta, Myelinated, and fast?

Answer 28

Acute Pain Fibers

Question 29

Which pain fibers are C-fibers (nocio), unmyelinated, and slow.

Answer 29

Chronic Pain Fibers

Question 30

What are the 2 main Proprioceptors and where are they found?

Answer 30

Muscle Spindles- in skeletal muscles | Golgi Tendon Organs- in tendons

Question 31

Receptors for these types of senses are found in internal organs.

Answer 31

Visceral Senses

Question 32

Conveys info of fullness, gas pain, and satiety.

Answer 32

Visceral Senses

Question 33

Cranial Nerve I

Answer 33

Olfactory (smell)

Question 34

List the Olfactory Nerve Pathway.

Answer 34

Olfactory Nerve > Olfactory bulbs > Olfactory Tracts > Limbic system for emotions and/or Olfactory Cortex for interpretation.

Question 35

Cranial Nerve that affects the posterior 1/3 of the tongue.

Answer 35

Glossopharyngeal Nerve (IX)

Question 36

Cranial Nerve that affects the anterior 2/3 of the tongue.

Answer 36

Facial Nerve (VII)

Question 37

Taste Receptors associated with the Facial Nerve (VII)

Answer 37

Salty, Sweet, Sour

Question 38

Taste receptors associated with Glossopharyngeal Nerve (IX)

Answer 38

Bitter

Question 39

What is the function of the External Ear?

Answer 39

Collect sound waves and guide them to the tympanic membrane

Question 40

What does the Auricle do?

Answer 40

Collects the sound waves. Its made of elastic cartlidge.

Question 41

What does the External Auditory Meatus do?

Answer 41

Carries the soundwaves to the tympanic membrane

Question 42

What does the Tympanic membrane do?

Answer 42

The eardrum. It vibrates in response to sound waves.

Question 43

What is the function of the Middle Ear?

Answer 43

To carry sound from outer ear to the inner ear.

Question 44

This equalizes pressure and connects the mid-ear to the throat.

Answer 44

Auditory/Eustachian Tube

Question 45

The function of the Inner Ear.

Answer 45

Where the process begins in hearing and balance control.

Question 46

What does the Cochlea do?

Answer 46

Helps with equilibrium and aides in hearing

Question 47

Other 2 things that aid in only equilibrium.

Answer 47

Semicircular canal and vestibules.

Question 48

Muscles that rotate the eye up and medially.

Answer 48

Superior Rectus

Question 49

Muscles that rotate the eye down and medially.

Answer 49

Inferior Rectus

Question 50

Rotates eye medially and laterally.

Answer 50

Medial Rectus

Question 51

You're being chased by a lion! Which ANS response is activated and how does it affect your pupils?

Answer 51

Sympathetic, pupils will dilate.

Question 52

Which ANS response will cause pupils to constrict?

Answer 52

Parasympathetic

Question 53

What color is the retina?

Answer 53

Yellow

Question 54

Produces sharp vision

Answer 54

Fovea centralis

Question 55

Blind spot in the eye

Answer 55

Optic Disk

Question 56

Gel that holds the retina in place against choroid coat.

Answer 56

Vitreous Humor

Question 57

Innermost Tunic of the eye

Answer 57

Retina

Question 58

Middle layer tunic of the eye

Answer 58

Vascular Tunic, contains choroid, ciliary body, and iris

Question 59

Outermost layer tunic of the eye

Answer 59

Fibrous Tunic, cornea and sclera

Question 60

Describe photoreceptors with rods.

Answer 60

Colorless, long/thin, mores sensitive than cones, vision in dim

Question 61

Describe photoreceptors with cones

Answer 61

Receptors that see color, short/blunt, vision in bright, sharp image.