Free BHK Bachelor of Kinesiology MCQ Questions and Answers — Questions and Answers
Question 1: What muscle supports the motion of the moving joint and helps the primary mover by stimulating the same joint motion?
- Agonist
- Antagonist
- Synergist (Correct answer)
- Fixator
Correct answer: Synergist
Synergists act on movable joints to assist the prime mover, or the agonist. An antagonist tries to stop the agonist from going the other way. A particular kind of synergist called a fixator retains bones so that tension can be applied to move the agonist.
Question 2: Which muscle is used when flexing the little toe?
- Abductor digiti minimi
- Flexor hallucis brevis
- Extensor hallucis brevis
- Flexor digiti minimi brevis (Correct answer)
Correct answer: Flexor digiti minimi brevis
The little toe is flexed by the flexor digiti minimi brevis. The great toe is extended by the extensor hallucis brevis. Both the great toe and the little toe are flexed by the flexor hallucis brevis and the abductor digiti minimi, respectively.
Question 3: These muscle groups work together effectively because they execute similar tasks.
- Gluteus Medius and Gluteus Maximus
- Latissimus Dorsi and Teres Major (Correct answer)
- Pectoralis Major and Pectoralis Minor
- Supraspinatus and Teres Minor
Correct answer: Latissimus Dorsi and Teres Major
Adduction, extension, and medial rotation of the glenohumeral joint are all functions carried out by the latissimus dorsi and teres major. Both the major and minor pectoralis work on two distinct joints. While the gluteus medius and maximus perform similar tasks, the latter also flexes the coxal joint. The main resemblance between supraspinatus and teres minor's activities is that both keep the glenohumeral head in the glenoid cavity.
Question 4: Which of the following does the opposite of what the vastus lateralis does when it contracts on its own?
- Rectus femoris
- Gracilis
- Biceps femoris short head (Correct answer)
- None of the above
Correct answer: Biceps femoris short head
As opposed to the vastus lateralis, which just extends the knee, the biceps femoris short head conducts knee extension. While two of the quadriceps muscles, the rectus femoris and the vastus lateralis, are responsible for knee extension, the gracilis is responsible for adduction and medial rotation.
Question 5: What kind of stimulus does a muscle spindle respond to the most?
- Alternating shortening and lengthening
- Sudden shortening
- Slow lengthening
- Rapid lengthening (Correct answer)
Correct answer: Rapid lengthening
One of the proprioceptors that uses muscle length to communicate with the brain about where our body is in space is the muscle spindles. When a muscle is rapidly stretched, a stretch reflex occurs. A motor neuron is then innervated by the muscle spindle to cause the stretching muscle to contract concentrically.
Question 6: The "little helper" for this muscle is the teres major because of its synergistic effect.
- Latissimus Dorsi (Correct answer)
- Pectoralis Major
- Rectus Abdominis
- Deltoid
Correct answer: Latissimus Dorsi
The teres major and latissimus dorsi adduct, rotate the arm medially, and extend it. Abduction, flexion, and medial rotation of the arm are motions of the deltoids. Arm flexion, extension, adduction, and medial rotation are all controlled by the pectoralis major. The spinal column flexion and abdominal compression are caused by the rectus abdominis.
Question 7: The target muscle is lengthened until a slight stretch is felt when conducting a post isometric relaxation stretch. The target muscle is then tightened and then let go, allowing it to continue to lengthen. An illustration of innervating this proprioceptor is as follows:
- Muscle spindle
- Golgi tendon organ (Correct answer)
- Meissner corpuscle
- Pacinian corpuscle
Correct answer: Golgi tendon organ
To avoid injury, the golgi tendon organ monitors changes in a muscle's tension. Muscle contraction is inhibited if tension in the muscle is excessive compared to the amount of force it can produce. By using this response, one can stretch farther without the muscle protesting. When triggered, the muscle spindle contracts. The Meissner corpuscle recognizes skin slippage. Additionally, the Pacinian corpuscle senses pressure and a high frequency of vibration in the skin.
Free BHK Bachelor of Kinesiology MCQ Questions and Answers
What muscle supports the motion of the moving joint and helps the primary mover by stimulating the same joint motion?