Action potential 2 nd part mechanoreceptors

Transient receptor potential (TRP) ion channel
 Respond to temp
Mechanoreceptors - Touch
Mechanoreceptors - Touch
• Examples of touch
receptors:
• Hair follicle receptors
• Meissner corpuscles
• Pacinian corpuscles
• Ruffini corpuscles
• Merkel’s disks
(just know there’s different
types)
Proprioceptors & Baroreceptors ( mechanoreceptors )

 Proprioceptors
o Monitor the position and
movement of the body
o Muscle Tension
 Muscle spindles
 Golgi tendon organs
 Baroreceptors
o Monitor blood pressure
o Blood pressure
 Carotid sinus
 Aortic arch
Sound Detection
 Aquatic vs terrestrial sound
 Aquatic vs Terrestrial Hearing structures
o Fish hearing structures are otoliths
 Denser than water and allows fish to detect sound
o Human ears are Outer, middle, inner ear
 Inner = sound waves
 Outer/middle = convert sound waves into motion of
solid structures and transfer that motion to the liquid of
the inner ear
 Sound waves first strike the tympanic membrane which
transfers the vibrations to the bones of the middle ear
 The last bone vibrates the oval window which transfers
sound into the inner ear

Transduction – The Cochlea
 Pressure waves are converted to pressure waves that travel through
the fluid of the…
 Cochlear duct then strikes the…
 Organ of corti which is made of several structures
o