Download MBBS Physiology Presentations 16 Cns I Sensory Lecture Notes

Download MBBS (Bachelor of Medicine, Bachelor of Surgery) 1st Year, 2nd Year, 3rd Year and Final year Physiology 16 Cns I Sensory PPT-Powerpoint Presentations and lecture notes


CNS I- Sensory


Axonal transport

Neuroglia




? Encapsulated nerve ending ? low threshold

? Free nerve ending ? high threshold

comparatively

? Slow adapting ? continuous (static) sti

? Fast adapting ? dynamic (change) sti

? Intensity discrimination ? at receptors




? Receptive field-


? Mul ers doctrine of specific nerve

energies

? Labelled line principle

? Law of projection

Phantom limb

? Weber Fechner law

? Stevens power law





Plasticity



? NCV
? Evoked Potential (upto 100ms)
? Event Related Potential (100-1000ms)
A generator potential
A. always leads to an action potential.
B. increases in amplitude as a more intense

stimulus is applied.

C. is an all-or-none phenomenon.
D. is unchanged when a given stimulus is applied

repeatedly over time.

E. all of the above.

Sensory systems code for the fol owing attributes of

a stimulus:

A. modality, location, intensity, and duration

B. threshold, receptive field, adaptation, and

discrimination

C. touch, taste, hearing, and smel

D. threshold, laterality, sensation, and duration

E. sensitization, discrimination, energy, and

projection
A 28-year-old male was seen by a neurologist

because he had experienced prolonged episodes

of tingling and numbness in his right arm. He

underwent a neurological exam to evaluate his

sensory nervous system. Which of the fol owing

receptors is correctly paired with the type of

stimulus to which it is most apt to respond?

A. Pacinian corpuscle and motion.

B. Meissner's corpuscle and deep pressure.

C. Merkel cel s and warmth.

D. Ruffini corpuscles and sustained pressure.

E. Muscle spindle and tension.

This post was last modified on 08 April 2022