Lecture 18 Content

Question 1

What are some examples of Fast pain receptors?

Answer 1

Acute injury, involves reflexes, sensory cortex

Question 2

What are some examples of slow pain receptors?

Answer 2

vague, soreness, often ignore-able

Question 3

what is an example of referred pain?

Answer 3

pereption of the pain is always not the source

Question 4

What are mechanoreceptors? types?

Answer 4

Tactical receptors (skin) touch, pressure, vibration
Baroreceptors: pressure within tubes
Propriocepters:stretch Thermoreceptors: changes in temp
Chemoreceptors: chemical

Question 5

Name the diffrent tacticle receptors?

Answer 5

Merkel cells - general touch
Meissners corpuscles - fine touch localized
Pacinian corupuscles - heavy pressure, vibrations

Question 6

What are Baroreceptors?

Answer 6

BV’s GI. UG pressure within tubes

Question 7

What are Baroreceptors?

Answer 7

BV’s GI. UG pressure within tubes

Question 8

What are propriceptors?

Answer 8

Muscles and joints - strech recaptors (SOMATIC)

- golgi tendon organs - measure tension in tendons

Question 9

what are thermoreceptors?

Answer 9

changes in temperature

Question 10

What are chemoreceptors?

Answer 10

Chemical

- caroitid and aortic bodies: CO2, O2 concentrations

Question 11

What CN’s are special senses?

Answer 11

OLFACTION: CN I
TASTE: CN VII, IX , X
VISION: CN II
HEARING: CN VIII = also equilibrium (inertia of fluid)

Question 12

What are the parts that make up the nasal cavity?

Answer 12

1. floor of nasal passage
2. Walls
3. roof: ethmoid bone covered with olfactory epithelium
4. Nasal septum
5. Nasal conchae (Turbinates) warm and humidify air

Question 13

What are the parts that make up the floor of the nasal passage?

Answer 13

anterior : hard palate = maxilla, palatine bones

Posterior : soft palate = muscular flap

Question 14

What makes up the wall of the nasal cavity?

Answer 14

Maxilla and palatine bones (maxillary sinus)

Question 15

What makes up the parts of the nasal septum?

Answer 15

Anterior: septal cartilage
Posterior: perpendicular plate of ethmoid and vomer

Question 16

What makes up the parts of the nasal Conchae?

Answer 16

Warm and humidify air
Superior nasal Conchae - olfactory epithelium
Middle nasal Conchae - respiratory epithelium
Inferior nasal conchae - largest easily broken, respiratory epithelium

Question 17

Describe the Olfactory nerve (CNI)

Answer 17

• olfactory foramina in the cribriform plate of ethmoid
• synapse w/ olfactory bulbs (cerebrum)
• olfactory cortex> hypothalmus > limbic system
  (emotional/behavioral response to smells)

Question 18

What is papillae?

Answer 18

10,000 papillae cover tongue’s surface
- most papilla support/protect taste buds
TASTE BUDS ARE NOT PAPILLAE

Question 19

What are the 4 types of papillae?

Answer 19

Filiform - filament - shape (provides friction) - no taste buds, no nerve endings
Fungiform - mushroom shape (nerve endings)
circumvallate - @ back wall of tongue
Foliate - leaf-shaped @ back sides of tongue

Question 20

What are chemoreceptors? related to taste buds?

Answer 20

Taste buds - chemical stimuli

- CN VII IX X (7,9,10) replay taste from taste buds to the brain

Question 21

What does CN V do for the tongue?

Answer 21

Chemical burns, temperature, pain

Question 22

What does CN XII do for the tongue?

Answer 22

motor control of intrinsic tongue muscles