Lecture 18 Content Flashcards
(22 cards)
What are some examples of Fast pain receptors?
Acute injury, involves reflexes, sensory cortex
What are some examples of slow pain receptors?
vague, soreness, often ignore-able
what is an example of referred pain?
pereption of the pain is always not the source
What are mechanoreceptors? types?
Tactical receptors (skin) touch, pressure, vibration
Baroreceptors: pressure within tubes
Propriocepters:stretch Thermoreceptors: changes in temp
Chemoreceptors: chemical
Name the diffrent tacticle receptors?
Merkel cells - general touch
Meissners corpuscles - fine touch localized
Pacinian corupuscles - heavy pressure, vibrations
What are Baroreceptors?
BV’s GI. UG pressure within tubes
What are Baroreceptors?
BV’s GI. UG pressure within tubes
What are propriceptors?
Muscles and joints - strech recaptors (SOMATIC)
- golgi tendon organs - measure tension in tendons
what are thermoreceptors?
changes in temperature
What are chemoreceptors?
Chemical
- caroitid and aortic bodies: CO2, O2 concentrations
What CN’s are special senses?
OLFACTION: CN I
TASTE: CN VII, IX , X
VISION: CN II
HEARING: CN VIII = also equilibrium (inertia of fluid)
What are the parts that make up the nasal cavity?
- floor of nasal passage
- Walls
- roof: ethmoid bone covered with olfactory epithelium
- Nasal septum
- Nasal conchae (Turbinates) warm and humidify air
What are the parts that make up the floor of the nasal passage?
anterior : hard palate = maxilla, palatine bones
Posterior : soft palate = muscular flap
What makes up the wall of the nasal cavity?
Maxilla and palatine bones (maxillary sinus)
What makes up the parts of the nasal septum?
Anterior: septal cartilage
Posterior: perpendicular plate of ethmoid and vomer
What makes up the parts of the nasal Conchae?
Warm and humidify air
Superior nasal Conchae - olfactory epithelium
Middle nasal Conchae - respiratory epithelium
Inferior nasal conchae - largest easily broken, respiratory epithelium
Describe the Olfactory nerve (CNI)
- olfactory foramina in the cribriform plate of ethmoid
- synapse w/ olfactory bulbs (cerebrum)
- olfactory cortex> hypothalmus > limbic system
(emotional/behavioral response to smells)
What is papillae?
10,000 papillae cover tongue’s surface
- most papilla support/protect taste buds
TASTE BUDS ARE NOT PAPILLAE
What are the 4 types of papillae?
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
What are chemoreceptors? related to taste buds?
Taste buds - chemical stimuli
- CN VII IX X (7,9,10) replay taste from taste buds to the brain
What does CN V do for the tongue?
Chemical burns, temperature, pain
What does CN XII do for the tongue?
motor control of intrinsic tongue muscles
