Order the steps involved in the activity of a muscle spindle:Muscle spindle is stretched.Reflex action occurs.Contraction of muscle fibers adjoining the muscle spindle.Nerve signals are generated.The muscle relaxes.The muscle's length increases.Multiple Choice1,6,2,4,5,32,3,1,4,5,65,6,1,4,2,32,1,6,3,4,55,1,2,4,3,6

What happens to activity levels in muscle spindle afferents versus Golgi tendon organ afferents when a muscle contracts? When a muscle is passively stretched?

The muscles of the back contract to straighten so that you sit at a more erect posture and subsequently the muscles are suddenly stretched as you nod off. Which of the following best represents the sequence of events when you start to nod off? (1) Muscles of the back are stretched.(2) The muscle spindle is stretched.(3) Action potentials in sensory neurons of the muscle spindles increase.(4) Action potentials in alpha motor neurons of skeletal muscle fibers increase.(5) Skeletal muscle of the back contract.Multiple Choice1, 2, 3, 4, 51, 5, 2, 3, 41, 5, 3, 2, 45, 2, 3, 4, 14, 5, 3, 2, 1

Muscle contractions are initiated by the binding of __________ to __________.

Group 1a primary afferent neurons (sensory neurons) from muscle spindles primarily encode which type of information?Group of answer choicesthe angle of the associated limb, relative to its motor inputthe tension of the muscle, relative to its motor inputthe absolute tension developed by the musclethe absolute length of the musclethe length of the muscle, relative to its motor input PreviousNext

The sequence of events that converts action potentials in a muscle fibre to a contraction is known as