Proprioception

Question 1

Meissner’s corpuscles

Answer 1

glabrous skin
touch, dynamic pressure
rapid adaptation

Question 2

Pacinian corpuscles

Answer 2

subcut. tissue, interosseus membranes, viscera
deep pressure, vibration
rapid adapt.

Question 3

Merkel’s Discs

Answer 3

All skin, hair follicles
touch, pressure
slow adaptation

Question 4

Ruffini’s corpuscles

Answer 4

all skin,
stretching
slow adapt

Question 5

Ascending tracts to cortex

Answer 5

fasciculus gracilis -> pelvic limbs and trunk caudal to T6
fasciculus cuneatus -> thoracic limbs and trunk cranial to T6
Trigeminal -> face

Question 6

Mechnoreceptors

Answer 6

Muscle spindles: muslces, length change, rapid and slow adapt
GTO: tendons, muscle tension, slow rate of adapt
joint receptors: joints, joint position, rapid rate of adapt

Question 7

Ascending tracts to cerebellum

Answer 7

DVST and VSCT: input spindles, GTO and joint receptors, influence is ipsilateral
CUNEOCEREBELLAR tract: thoracic limbs to cerebellum

Question 8

Proprioceptive deficits

Answer 8

ataxia, base-wide stance, knuckling or toe-dragging