Joint/Muscle Receptors and Muscle Physiology Flashcards
What are the 5 receptors found within a joint?
Free Nerve Endings Golgi Ligament Endings Golgi-Mazzoni Corpuscles Pacinian Corpuscles Ruffini Endings
What type of sensation are free nerve endings responsible for?
Non-noxious mechanical stimuli
Noxious mechanical or biomechanical stimuli
What type of sensation are Golgi ligament endings responsible for?
Tension or stretch on ligaments
What type of sensation are Golgi Mazzoni corpuscles responsible for?
Compression of the joint capsule
What type of sensation are Pacinian corpuscles responsible for?
High frequency vibration, acceleration, and high velocity changes in joint position
What type of sensation are Ruffini endings responsible for?
Stretching of joint capsule
Amplitude and velocity of joint position
What type of muscle fibers are used for activities such as swimming or running a marathon?
Type I
What type of muscle fibers are used for activities such as sprinting or completing a high jump?
Type II
Describe type I muscle fibers in terms of fatigability, size of fibers, color and twitch, and energy.
Low fatigability Small fibers Red Slow twitch Aerobic Slow-oxidative
Describe type II muscle fibers in terms of fatigability, size of fibers, color and twitch, and energy.
High fatigability Large fibers White Fast twitch Anaerobic Fast-glycolytic
Which muscle fibers are tonic versus phasic?
Type I are tonic
Type II are phasic
What are the 2 types of receptors found in muscle?
Muscle spindle
Golgi Tendon Organ
What is the function of a muscle spindle?
To send information to the nervous system about muscle length and/or rate of change of its length
The muscle spindle is important in the control of ____.
Posture
What is the function of the Golgi tendon organ?
Send information to the nervous system about tension or rate of change of tension within the muscle
