Objective Questions

Question. Match the following column

Column – I	Column – II
A. Cranium	I. 29
B. Skull	II. 8
C. Face	III. 14
D. Hind limb	IV. 12 pairs
E. Ribs	V. 30

Options :
(a) A – II, B – II, C – III, D – V, E – IV
(b) A – II, B – I, C – III, D – V, E – IV
(c) A – I, B – II, C – III, D – IV, E – V
(d) A – V, B – IV, C – III, D – II, A – I

Question. Which of the following is not a disorder of bone?
(a) Arthritis
(b) Osteoporosis
(c) Rickets
(d) Atherosclerosis

Question. Human cranium has small protuberance at the posterior end called____and _____ in number that articulates with first vertebra (atlas vetrbra)
(a) Occipital condyle,6
(b) Occipital condyle,2
(c) Occipital condyle, 4
(d) Occipital condyle, 3

Question. Which of the following statement about human vertebral column is false?
(a) Vertebral column contains 26 vertebrae
(b) It is ventrally placed
(c) It extends from the base of skull and constitutes the main framework of the trunk
(d) Neural canal in vertebra is the passage for spinal cord

Question. Which of the following is not a function of vertebral column?
(a) Protects spinal cord and supports the head
(b) Serves as the point of attachment for ribs and musculature of the back
(c) Both (a) and (b)
(d) Support tarsals and metacarpals

Question. Each typical rib is a thin flat bone connected____to the ventral column and_____to the sternum
(a) Dorsally, ventrally
(b) Ventrally, dorsally
(c) Dorsally, dorsally
(d) Ventrally, ventrally

Question. Match the following

Column – I	Column – II
A. True ribs	I. 3 pairs
B. False ribs	II. 2 pairs
C. Floating ribs	III. 7 pairs

Options :
(a) A – I, B – II, C – III
(b) A – III, B – I, C – II
(c) A – III, B – II, C – I
(d) A – II, B – I, C – III

Question. Identify the ribs

Column – I	Column – II
A. Ribs are attached to the sternum ventrally and to the vertebrae dorsally	I. True ribs
B. Ribs are attached to the sternum through costal hyaline cartilage of 7th rib	II. False ribs
C. Ribs are not attached to sternum	III. Floating ribs

Options :
(a) A – I, B – II, C – III
(b) A –I, B – III, C – II
(c) A – II, B – I, C – III
(d) A – III, B – II, C – I

Question. Each lumbar consists of how many bones
(a) 30
(b) 60
(c) 101
(d) 8

Question. Number of bones in each upper limb is
(a) 1,1,1
(b) 8,5,14
(c) 2,2,2,16,10,28
(d) 1,1,1,8,5,14

Question. The given diagram is related with myosin monomer (meromyosin) identify A to C

(a) A-head, B-cross arm, C-GTP binding sites
(b) A-head, B-cross arm, C-Ca⁺² binding sites
(c) A-head, B-cross arm, C-ATP binding sites
(d) A-cross arm, B-head, C-ATP binding sites

Question. The action potential that triggers a muscle contraction travels deep within the muscle cell by means of
(a) Sarcoplasmic retuculum
(b) Transverse tubules
(c) Synapse
(d) Motor end plate

Question. A motor unit is best described as
(a) All the nerve fibres and muscle fibres in a single muscle bundle
(b) One muscle fibre and its single nerve fibre
(c) A single motor neuron and all the muscle fibres that it innervates
(d) It is the neuron which carries the message from muscle to CNS

Question. Electrical excitation in a muscle fibre most directly causes
(a) Movement of tropomyosin
(b) Attachment of cross bridge to actin
(c) Release of Ca⁺² from sarcoplasmic reticulum
(d) Splitting of ATP

Question. According to the sliding filament theory
(a) Actin moves past myosin
(b) Myosin moves past actin
(c) Both myosin and actin move past each other
(d) None of these is correct

Question. When a skeletal muscle shortens during contraction, which of the following statement is false?
(a) The I-band shortens
(b) The A-bands shortens
(c) The H-bands becomes narrower
(d) The sarcomeres shorten

Question. Which of the following statements is correct?
(a) During muscle contraction chemical energy changes into mechanical energy
(b) Muscle fatigue is due to lactic acid formation due to anaerobic respiration
(c) The reaction time of the fibres can vary in different muscles
(d) All

Question. Identify traits as characteristic of A and B types of muscles

Column – I	Column – II
A. Red muscles	I. Number of mitochondria less
B. White muscles	II. Number of mitochondria more
	III. Sarsoplasmic reticulum is abundant
	IV. Myoglobin content is high
	V. Sarcopasmic reticulum moderate
	VI. Aerobic muscles
	VII. Depend on anaerobic respiration for energy
	VIII. Less myoglobin content

Options :
(a) A–I,III,VI,VIII; B–II,IV,V,VI
(b) A–II,IV,V,VI; B–I,III,VII,VIII
(c) A–I,III,IV,VII; B–II,V,VI,VIII
(d) A–II,V,VI,VIII; B–I,III,IV,VII

Question. Bone has a very hard matrix due to presence of
(a) NaCl
(b) Ca-salts
(c) K-salts
(d) Fe-salts

Question. Knee joint and elbow joint are examples of
(a) Saddle joint
(b) Ball and socket joint
(c) Pivot joint
(d) Hinge joint

Question. The macrophages in human body exhibit
(a) ciliary movement
(b) amoeboid movement
(c) no movement
(d) movement with the blood flow only

Question. Smooth muscle is
(a) found in walls of heart only.
(b) found in the walls of all the hollow organs except heart.
(c) attached to the bones only.
(d) found only in the walls of alimentary canal.

Question. Striations in the striated muscles are due to
(a) absence of myofilaments.
(b) presence of myofilaments.
(c) specialized arrangement of myofilaments.
(d) projections of myosin.

Question. Actin protein occurs in which of the following two forms ?
(a) Polymeric F- actin and monomeric G- actin
(b) Monomeric F- actin and polymeric G-actin
(c) The tail and a head
(d) F-actin and G- actin, but both globular.

Question. A-band of the myofibril contains
(a) only thick filaments
(b) only thin filaments
(c) both thick and thin filaments
(d) no filaments

Question. During muscle contraction in humans the
(a) actin filaments shorten.
(b) sarcomere does not shorten.
(c) A-band remain same.
(d) A, H and I bands shorten.

Question. Which muscle protein acts as ATPase?
(a) Actin
(b) Troponin
(c) Myosin
(d) Tropomyosin

Question. Which of the following is the store house of calcium in muscles?
(a) Sarcosome
(b) Sarcoplasmic reticulum
(c) Creatine phosphate
(d) Sarcomere

Question. During fatigue
(a) muscles cannot relax.
(b) muscles fail to be stimulated.
(c) blood supply to muscles stops.
(d) nerve supply to muscles become inactive.

Question. In mammals the lower jaw is made of
(a) maxilla
(b) dentary
(c) mandible
(d) ethmoid

Critical Thinking Type Questions

Question. Which of the following represents the correct order of vertebral regions from superior to inferior?
I. Sacrum
II. Thoracic
III. Cervical
IV. Lumbar
V. Coccyx
(a) I – II – III – IV – V
(b) II – IV – I – III – V
(c) IV – I – II – V – I
(d) III – II – IV – I – V

Question. The intercalated discs of________ muscle________.
(a) smooth; provide strong mechanical adhesion and rapid electrical communication
(b) skeletal; are the basis for all voluntary muscle action
(c) skeletal; make possible both fast twitches and slow twitches
(d) cardiac; provide strong mechanical adhesion and rapid electrical communication

Question. All or None law is associated with
(a) skeletal muscle fibre
(b) neuron
(c) cardiac muscle fibres
(d) all of the above

Question. Which of the following is not exclusively supplied with involuntary muscles?
(a) Muscles of iris
(b) Muscles of the ducts of gland
(c) Muscles of urethra
(d) Muscular coats of blood vessel

Question. Muscle A and muscle B are of the same size, but muscle A is capable of much finer control than muscle B. Which one of the following is likely to be true for muscle A?
(a) It contains fewer motor units than muscle B.
(b) It has larger sarcomeres than muscle B.
(c) It is controlled by more neurons than muscle B.
(d) It is controlled by fewer neurons than muscle B.

Question. The H-zone in the skeletal muscle fibre is due to
(a) The central gap between myosin filaments in the A-band.
(b) The central gap between actin filaments extending through myosin filaments in the A-band.
(c) Extension of myosin filaments in the central portion of the A-band.
(d) The absence of myofibrils in the central portion of A-band.

Question. Which of the following structures is correctly organized from large to small?
(a) Muscle, Muscle cell, Myofibril, Sarcomeres, Filaments.
(b) Muscle, Muscle fibres, Sarcomeres, Filaments, Myofibrils.
(c) Muscle, Sarcolemma, Myofibrils, Actin filaments, Myosin filaments.
(d) Muscle cells, Myofibrils, Filaments, Sarcoplasm.

Question. The joint between _____(i)____ and _____(ii)_____ forms ball and socket joint.
(a) (i) – Humerus, (ii) – Ulna
(b) (i) – Humerus, (ii) – Scapula
(c) (i) – Ulna, (ii) – Radius
(d) (i) – Ulna, (ii) – Scapula

Question. The striations that give skeletal muscle its characteristic striped appearance are produced by
(a) the T tubules.
(b) sarcoplasmic reticulum.
(c) arrangements of myofilaments.
(d) a difference in the thickness of sarcolemma.

Question. Lubrication occurs at hinge joints which need to be able to move without friction. Which one of the following substances aids lubrication?
(a) Cartilage
(b) Ligament
(c) Synovial fluid
(d) Connective tissue

Question. “X” is a large triangular flat bone situated in the dorsal part of the thorax between the “Y” and the seventh ribs. Identify “X” and “Y”.
(a) X – Patella ; Y – Third
(b) X – Clavicle ; Y -Eight
(c) X – Scapula ; Y – Sixth
(d) X – Scapula ; Y – Second

Question. A student was given sample of two muscles marked as 1 and 2. When he compared the muscles he found that muscle 1 contains large amount of myoglobin and utilize large amount of stored oxygen for ATP production whereas muscle 2 contains few myoglobin, mitochondria and high sarcoplasmic reticulum. Identify the correct conclusion regarding the muscle 1 and 2 from the option given below.
(a) Both the muscles are called aerobic muscles.
(b) Both the muscles are called red fibers and depend on aerobic process for energy.
(c) Muscle 1 is called white fibers and whereas muscle 2 depends on aerobic process for energy.
(d) Muscle 1 is called red fibers and aerobic muscles whereas muscle 2 is called white fibers and depend
on anaerobic process for energy.

Diagram Type Questions

Question. The given diagram shows a human skeleton. Which of the following correctly identifies the bones marked as I, II, III & IV?

I	II	III	IV
(a) Tibia	Fibula	Radius	Ulna
(b) Radius	Ulna	Tibia	Fibula
(c) Ulna	Radius	Tibia	Fibula
(d) Fibula	Tibia	Radius	Ulna

Question. The given figure represents the cross bridge cycle in skeletal muscle. What does the step B in the figure represents?

(a) Attachment of myosin head to actin forming cross bridge.
(b) Release of phosphate. Myosin changes shape to pull actin.
(c) Attachment of new ATP to myosin head. The cross bridge detaches.
(d) Splitting of ATP into ADP and Pi. Myosin cocks into its high energy conformation.

Question. The given figure shows right pectoral girdle and upper arm. Few parts are marked as 1, 2, 3 and 4.

Which of the following options shows the correct labelling of marked parts?

	1	2	3	4
(a)	Clavicle	Scapula	Humerus	Radius
(b)	Scapula	Clavicle	Radius	Humerus
(c)	Sacrum	Scapula	Ulna	Tibia
(d)	Radius	Clavicle	Scapula	Humerus