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Unformatted text preview: ), causing sudden
stretching/elongation stretch reﬂex!!!!!
be familiair with this process dude. Spindle within bicep detects
change in length no conscious though ---sends an activating signal to biceo and inhibitory
signal to the antagonist tricep. Afferent signal sent to
spinal cord Mono-synapse with
alpha motor neuron Alpha motor neuron
signals the bicep to
contract (flexion of elbow) Inhibitory interneuron
connects with alpha motor
neuron of antagonist
muscle Triceps (extensors) stay
relaxed Tendon Reflex… tendon reﬂex!!!! the doctor hammer test on your knee!!!! …is an example of the stretch reflex so when they hit it strecthes the muscle ever so slightly--sends a signal to the spinal cord and activates the alpha nueron and
the coorespiding inhibitory neuron..this is a test if the neruosystem is
know the ﬁgure!!!! 11 7/4/12 Proprioception: Golgi tendon organ (GTO) • Located in the myotendinous
• Both passive stretch and active
contraction of the muscle
increases the tension of the
tendon, which activates the GTO.
• MUSCLE TENSION!! GTO in the end of musle and the tendon!!! SENSES MUSCLE TENSION!!!!!!!!--not velocity and position GTO WILL shut down muscle if there is too much force and
it will cause a muscle tear. example of GTO function Golgi tendon organ (GTO) serves as a protective reﬂex • The tendon organ (GTO) appears to be more sensitive to active contraction
than to passive stretching. GTO as a reflex
Excessive load placed on the muscle
causing a sudden increase in tension.
Tension change is detected by the
golgi tendon organ.
Afferent signal sent to spinal cord. Mono-synapse with
connects with alpha motor alpha motor neuron
neuron of agonist muscle Biceps (flexors) are
inhibited (relaxed) Alpha motor neuron
signals the triceps to
contract (extension of
elbow) The GTO is thought to
protects muscle from
excess load 12 7/4/12 Somatosensory System
skin Pacinian, Meissner, Merkel,
Ruffini and Free endings Muscles Muscle spindles and
Golgi tendon organs Joints Type 1, 2, 3 and 4 Proprioception Proprioception: Joint Receptors
Type1 – Ruffini like receptors are slow
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This document was uploaded on 03/28/2014 for the course KNES 385 at Maryland.
- Fall '08