MCQs Biology F.Sc. Part 2 ( 2nd Year )
Chapter No.16
Support and Movements
Total MCQs = 165
62. Skeletal muscle is described by all of the following except:
(A) Striated
(B) Voluntary
(C) Cardiac
(D) Autorhythmic
Answer:
(D) Autorhythmic
63. The walls of digestive tract and blood vessels are made up of this muscle tissue:
(A) Striated
(B) Skeletal
(C) Cardiac
(D) Smooth
Answer:
(D) Smooth
64. The smallest contractile unit of skeletal muscle is a:
(A) Sarcomere
(B) Motor unit
(C) Synapse
(D) Thin filament
Answer:
(A) Sarcomere
65. The major regulatory proteins in muscle tissue are:
(A) Myosin and tropomyocin
(B) Myosin and actin
(C) Actin and troponin
(D) Troponin and tropomyocin
Answer:
(D) Troponin and tropomyocin
66. Muscles that straighten two bones at joints are called extensors. What is the name for muscles that cause two bones to bend at joints?
(A) Protractors
(B) Flexors
(C) Adductors
(D) Abductors
Answer:
(B) Flexors
67. Which of the following is the best description of cardiac muscle?
(A) Non-striated — Involuntary
(B) Non-striated — Voluntary
(C) Striated — Involuntary
(D) Striated — Voluntary
Answer:
(C) Striated — Involuntary
68. The loss of bone density which can cause bones to become light, brittle and easily broken is called:
(A) Spondylosis
(B) Arthritis
(C) Sciatica
(D) Osteoporosis
Answer:
(D) Osteoporosis
69. Inflammation of the joint is known as:
(A) Bursitis
(B) Arthritis
(C) Both A and B
(D) Nephritis
Answer:
(B) Arthritis
70. A single somatic motor neuron and the group of muscle fibers innervated by it is:
(A) Somatic unit
(B) Motor unit
(C) Associative
(D) None of these
Answer:
(B) Motor unit
