BIOL 2457 FINAL EXAM QUESTIONS AND ANSWERS 100% PASS 2026/2027

BIOL 2457 FINAL EXAM QUESTIONS
AND ANSWERS 100% PASS 2026/2027




Sensory Receptor - ANS dendrites of sensory neurons or separate cells



Mechanoreceptor - ANS Mechanical

Exteroceptors/Intetoceptors/propioreceptors



Thermoreceptors - ANS Temperature

Exteroceptors/Intetoceptors



Photoreceptors - ANS Light

Exteroceptors



Chemoreceptors - ANS Chemical

Exteroceptors/Intetoceptors



Nocioreceptors - ANS Pain

Exteroceptors/Intetoceptors




@2026 ALLRIGHTS RESERVED 1

, General vs. Special Senses - ANS General (somatic): All over the body; touch

Special: In the brain/head; smell, sight, sound, taste



How is one stimulus distinguished from another? - ANS *Modality: labeled lines (the way it is
done)

*Quality Discrimination: ability to distinguish diff modalities

*Feature Abstraction: detection of stimulus by sensory neurons

*Location: acuity

*Intensity: frequency



Somatic Senses: Tactile

Light Touch - ANS Rapidly adapting receptors

-Meissner

-Root hair



Somatic Senses: Tactile

Heavy Touch - ANS Slowly adapting receptors

-Merkel discs

-Ruffini endings

*sustained sensations over larger area, deeper



Somatic Senses: Tactile

Vibration - ANS Rapidly adapting receptors

-Meissner: low freq

-Pacinin: high freq



@2026 ALLRIGHTS RESERVED 2