Multiple Choice Quiz on Muscular system

This quiz is designed to assess your basic knowledge in ‘muscular system'. Questions come under ‘medium’ category. Choose the best answer from the four options given. When you've finished answering as many of the questions as you can, scroll down to the bottom of the page and check your answers by clicking 'Score'. Percentage score will be displayed along with right answers.
muscular system
1. The functional unit of contractile system in striated muscle is
sarcomere
Z band
myofibril
cross bridges
2. Which of the following is the contractile protein of a muscle
myosin
tubulin
tropomyosin
all of these
3. Which statement is correct for muscle contraction?
length of A band remains constant
length of I band increases
length of two Z line incresases
All of these
4. The contractile protein of skeletal muscle involving ATPase activity is
myosin
alpha amanitin
troponin
tropomyosin
5. The sliding filament theory of muscle contraction was proposed by
A. Pullman and B. Pullman
B. Pullman and A.F. Huxley
A.F.Huxley and H.E. Huxley
A.F.Huxley and A. Pullman
6. Red muscles are rich in
myoglobin and cytochrome
lactic acid and acetic acid
hemoglobin and glucose
only myosin
7. The contraction of one of the muscles rotates to turn the palm down ward or backward. Identify the muscle from the following
Pronator
Flexor
Adductor
Extensor
8. Sarcolemma is the membrane which covers
nerve fibre
muscle fibre
visceral fibre
spinal cord
9. When a muscle bend one part upon the other, it is called
abductor
regulator
extremor
flexor
10. Intercostal muscles occur in
ribs
thigh
diaphragm
abdomen
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