Question

Which functionality would be most affected if you lost your SA II (Ruffini) touch receptors?

A. Texture perception and pattern/form perception, like for reading Braille
B. The ability to sense cold and warmth of objects touching the skin
C. Sensitivity to finger position and downward skin pressure, as when holding an object
D. The ability to detect stable grasp and whether an object is slipping
E. The ability to feel when an object you are holding contacts another object, or a mosquito landing on your arm

Answer 1

Answer:

C. Sensitivity to finger position and downward skin pressure, as when holding an object

Explanation:

SA II fibers a form of the Ruffini respond particularly to lateral skin stretch and direction of object motion, they terminate in Ruffini endings connected to Aβ nerve endings.

Sensitivity to finger position and downward skin pressure, as when holding an object would be most affected if you lost your SA II (Ruffini) touch receptors.

Answer 2

Answer:

option C

Explanation:

Ruffini corpuscles functions primarily in sensing skin stretching, movement, and finger position.  These Ruffini touch receptors also detect tension deep in the skin. the Merkel nerve ending function in Texture perception and pattern/form perception, like for reading Braille. The ability to detect stable grasp and whether an object is slipping is detected by the Meissner's corpuscles.