Sensory Receptors

Question 1

Unencapsulated Sensory nerves

Answer 1

free nerve ending.
Epithelial tactile complexes (Merkel’s disc)- tactile disc in epithelial cell in basal layer of epidermis attached to sensory nerve
hair follicle

Question 2

Encapsulated

Answer 2

tactile (messiner) corpuscle
lamellar( Pacinian)
bulbous (Ruffini endings)
proprioceptors

Question 3

Tactile (messiner) corpuscle

Answer 3

dermal papillae for discriminative touch and low frequency vibration of fingertips, nipples, and external genitalia

Question 4

Lamellar(Pacinian) corpuscle

Answer 4

hypodermis, dermis, tendons, ligaments, joint capsules, and periostea for deep pressure, stretch, and high frequency vibration

Question 5

Bulbous Corpuscles (Ruffini endings)

Answer 5

in deep dermis, hypodermis, and joint capsules to detect pressure and stretch

Question 6

Proprioceptors

Answer 6

monitor stretch of locomotor organs
3 types
muscle spindles
tendon organs
joint kinesthetic receptors

Question 7

muscle spindles

Answer 7

measure changing length of muscles
in perimysium (CT) between fasicles
each on contains several modified skeletal muscle fibers called intrafusal innervated by sensory fibers

Question 8

tendon organs

Answer 8

near muscle tendon junction

monitor tension within tendons

Question 9

joint kinesthetic receptors

Answer 9

sensory nerve endings within the joint capsules