Chapter 18 General Senses/Receptors Flashcards
Fast pain
acute injury, involves reflexes, sensory cortex
Slow pain
vague, soreness, often ignore-able
referred pain
perception of pain isn’t source of the pain
Tactile receptors (skin)
touch, pressure, vibration
Merkel cells
general touch (general distribution)
Meissner’s corpuscles
fine touch, localized
Pacinian corpuscles
heavy pressure, vibration
Ruffini’s corpuscles
stretch receptors
Baroreceptors
pressure within tubes (BV’s, GI, UG)
Proprioceptors
muscle/joint: stretch
Golgi tendon organs
measure tension in tendons
Chemoreceptors
- chemical
- carotid & aortic bodies: CO2, O2 concentrations
CN II
Vision (electromagnetic)
CN VIII
Equilibrium (inertia of fluids)
CN VIII
Hearing (vibration of air & fluids)
hard palate of floor of nasal passage
anterior: maxilla, palatine bones
soft palate of floor of nasal cavity
posterior: muscular flap
Nasal Septum
septal cartilage, perpendicular plate, vomer
Nasal conchae
warm & humidify air
inferior conchae
largest, easily broken, respiratory epithelium
Olfactory nerve (CN I)
olfactory cortex > hypothalamus > limbic system
ie emotional/behavioral response to smells
Tongue cranial nerves
CN VII, IX, X, XII, V3
Papillae
support/protect taste buds
Filiform
small, “filament-shaped” (friction), no taste buds
Fungiform
medium, “mushroom-shaped”
Circumvallate
large, @ back wall of tongue
Foliate
leaf-shaped @ back/sides of tongue (gill-like)
Chemoreceptors
chemical stimuli
Limbic system redux
links conscious though w/ ANS of brainstem = thirst, hunger, sex
learning and the storage/recall of long-term memory
