10 MCQs on Biomechanics (Part-I)

In this article, we will solve 10 MCQs on Biomechanics (Part-I). So let’s get started.

Questions and Answers (Correct answers in bold)

Q1. The resting membrane potential if skeletal muscle fiber is:

  • -90 mV
  • -0.9 mV
  • -0.09 mV
  • -0.009 mV

Q2. Conduction of nerve impulses is faster in myelinated nerve because of:

  • Uninterrupted flow of impulse
  • Saltatory conduction
  • Circular current flow
  • Quick reversal of current flow

Q3. Cardiac muscles ability to regenerate is:

  • Partial
  • None
  • Full and complete
  • Variable

Q4. Presence of muscle fibrillation indicates which of the following:

  • Hyperexcitability of motor unit
  • High neural discharge rate
  • Loss of muscle innervation
  • Upper motor neuron defect

Q5. Which type of contraction occurs when the force of the muscles is less than the resistance:

  • Concentric
  • Eccentric
  • Isometric
  • Isokinetic

Q6. The cross-section of muscle is equal to:

  • Length × width
  • Length × 1/2 thickness
  • 2(thickness) ÷ 2(width)
  • Width × thickness

Q7. During rest the flow of blood to muscle is:

  • 3-4 mL/100 gm/min
  • 3-4 mL/100 gm/sec
  • 3-4 mL/10 gm/30 sec
  • 3-4 mL/1000 gm/min

Q8. One of the function of basal ganglia is to:

  • Increase the muscle tone
  • Produce small jerky movements
  • Inhibit stretch reflex
  • Control auditory function

Q9. A patient who recently sustained a gastronemius strain asks a therapist what factors may have contributed to the muscle strain. Which statement does not accurately describe contributing factors to a muscle strain:

  • The muscle may have been poorly prepared due to inadequate warm-up
  • The muscle may have been weakened by a previous injury
  • The muscle may have been exposed to heat which would cause the muscle to be less contractile than normal
  • The muscle may previously have been extensively injured with resultant scar tissue formation

Q10. A 23-year-old suffered from spinal cord injury while rock-climbing and is independent in transfers with assistive devices most likely spinal cord level involved is:

  • C5
  • C6
  • C7
  • T1

(Note: Correct answers in bold)

Advertisements

Leave a Reply

This site uses Akismet to reduce spam. Learn how your comment data is processed.