Lecture Outline #18: General Sense/receptors

Question 1

fast pain

Answer 1

acute injury, involved injury, sensory cortex

Question 2

slow pain

Answer 2

vague, soreness, often ignoreable

Question 3

referred pain

Answer 3

indirect pain, viscera can’t directly tell brain what is happening because information is on rami communicantes which is on the ventral rami - same axon.

Question 4

tactile receptors

Answer 4

skin - touch, pressure, vibration (Merkel, Meissner’s Pacinian corpuscles, free nerve endings, and Ruffini’s corpuscles

Question 5

merkel cells

Answer 5

general touch

Question 6

meisnner’s/tactile corpuscles

Answer 6

highly branched and specific, fine touch and localized pressure. Lips and fingertips

Question 7

pacinian/laminated corpuscles

Answer 7

heavy pressure & deep vibration
controls rolling when you sleep

Question 8

free nerve endings

Answer 8

initial traction, located everywhere

Question 9

ruffini’s corpuscles

Answer 9

stretch receptors in dermis

Question 10

barorecptors

Answer 10

BV’s, GI, UG & resp - senses pressure & volume within tubes

Question 11

proprioceptors & golgi tendon organ

Answer 11

safety mechanism, senses stretch & position of muscles & joints
golgi - measure tension in tendons

Question 12

thermoreceptors

Answer 12

change in temp & report to brain
does not detect extreme changes

Question 13

chemoreceptors

Answer 13

chemical - CO2, O2, ph concentration & levels
allow for gustation & olfaction
carotid (CN IX) and aortic (CN X) bodies

Question 14

what happens to co2 production when running

Answer 14

legs produce more co2 so brain increase heart rate to get rid of the co2 as quick as possible

Question 15

CN I

Answer 15

hard-wired - linked to memory
olfaction - chemical

Question 16

CN VII, IX, X

Answer 16

hard-wired - linked to memory
taste - chemical

Question 17

CN II

Answer 17

vision - electromagnetic

Question 18

CN VIII

Answer 18

equilibrium - inertia of fluids
hearing - vibration of air & fluids

Question 19

olfaction flow

Answer 19

olfactory stimulus - olfactory epithelium - olfactory n. - olfactory bulb - olfactory tract - olfactory cortex - hypothalamus - limbic system for emotional/memory association & processing

Question 20

floor of nasal cavity

Answer 20

anterior - hard palate (maxilla & palatine bones)
posterior - soft palate (muscular flap)

Question 21

walls of nasal cavity

Answer 21

maxilla & palatine bones

Question 22

nasal septum

Answer 22

anterior - septal cartilage
posterior - perpendicular plate of ethmoid & vomer

Question 23

rood of nasal cavity

Answer 23

ethmoid bone covered in olfactory epithelium

Question 24

nasal conchae

Answer 24

turbinate, warm & humidify air
superior - olfactory epithelium
middle - respiratory epithelium
inferior - respiratory epithelium

Question 25

papillae

Answer 25

around 10000 cover tongue surface
most support/protect taste buds

Question 26

papillae - filiform

Answer 26

no taste buds, fill in the space

Question 27

papillae - fungiform

Answer 27

5-10 taste buds per 1
mushroom shaped

Question 28

papillae - circumvallate

Answer 28

100 taste buds per 1
@ back wall, create an arrow in which way food goes
separates the anterior 2/3 and posterior 1/3

Question 29

papillae - foliate

Answer 29

100 taste buds per 1
@ back/sides of tongue
look like folds

Question 30

taste bud basic function

Answer 30

act as wiring in papillae

Question 31

motor control of tongue

Answer 31

CN XII

Question 32

chemical burns, temperature, and pain

Answer 32

CN V3