QUESTIONS 4-8: Match the term in column A with the appropriate description in co
ID: 3477330 • Letter: Q
Question
QUESTIONS 4-8: Match the term in column A with the appropriate description in column B. 4. Threshold stimulus 5. Motor unit 6. Motor unit recruitment 7. Muscle flexibility 8. Muscle fatigue a. Condition of a muscle characterized by its inability to generate a force b. Minimum stimulus required to initiate a muscle fiber contraction c. Activation of increasing numbers of motor units in a muscle d. Motor nerve fiber and all the muscle fibers it controls e. Range of motion at a joint 9. The following data were collected by measuring the range of motion (ROM) at various joints with a goniometer Measured ROM (mark with "x for visual Left 86° 120 Average ROM Joint Abductionn Adduction Shoulder 127 119 49*Explanation / Answer
1. Threshold Stimulus is the minimum stimulus required for contraction of muscle, which else we can call a muscle twitch (contraction of a single muscle)
2. A motor unit is combination of a motor neuron and the skeletal muscle fibres. Clusters of motor units usually work together to regulate the contractions of a single muscle.
3. Motor unit recruitment mentions about the activation of increasing motor units to complete an increase in contractile strength in a muscle. As we have already discussed on above statement about a motor unit, this we can consider its additional function.
4. Muscle flexibility refers to the range of movement in a joint or a series of joints and muscles that cross the joints to induce a bending movement or motion.
5. Muscle fatigue is inability or weakening of muscle activity to generate action or force which is due to heavy exercise and or sometimes abnormal fatigue due to pathological conditions.
So, the matching can be done as
4. - b
5. - d
6. - c
7. - e
8. - a