CBSE Questions for Class 11 Medical Biology Locomotion And Movement Quiz 1 - MCQExams.com

Chordae tendinae are the cord like structures that originate from papillary muscles of the inner border of the ventricles and are attached to free edges of the cuspid valves. What would happen if there is breakdown of chordae tendinae of bicuspid valves?
  • There will be regurgitation of blood into right atrium during ventricular systole
  • The bicuspid valves will not close
  • The blood may flow back into the left atrium during ventricular systole
  • There may be regurgitation of blood into both the atria during ventricular systole
Fill in the blanks with the correct combination of terms;
The joints in the body are the places where two ___a___ are joined together. The ends of bones are covered with soft ___b___. At the joints, the bones are held together strong, stretchy bands called ___ c__.
  • a-Bones; b-Cartilage; c-Tendons
  • a-Bones; b-Ligaments; c-Tendons
  • a-Bones; b-Cartilage; c-Ligaments
  • a-Cartilage; b-Ligaments; c-Tendons
What do skeletons drop?
  • Brains
  • Food
  • Bones
  • Leather
Bowling an imaginary cricket ball involves the movement of 
  • Legs
  • Shoulder
  • Knee
  • Hip
Which among the following are joints?
  • Neck
  • Elbow
  • Shoulder
  • All of the above
The bending of arm to touch the shoulder with the fingers is due to the action of _____.
  • Shoulder
  • Elbow
  • Wrist
  • Arm 
Ram kicks a football. This is due to the action of
  • Hip
  • Toes
  • Knees
  • None of these
Legs for movement are absent in which of the following animals? 
  • Dogs
  • Crows
  • Snakes
  • Cows
How do snakes move?
  • They have legs
  • They use the whole body to slither
  • Both A and B
  • None of these
Joint between bones of human skull is
  • Hinge joint
  • Synovial joint
  • Cartilaginous joint
  • Fibrous joint
The cartilage making up the lower jaw is known a

  • Dentary
  • Metapophysis
  • Anapophysis
  • Post-zygapophysis
Which one of the following is the correct description of a certain part of a normal human skeleton

  • Parietal bone and the temporal bone of the skull are joined by fibrous joint
  • First vertebra is axis which articulates with the occipital condyles
  • The 9th and both pairs of ribs are called the floating ribs
  • Glenoid cavity is a depression to which the thigh bone

    articulates
Muscles responsible for the movement of food in the stomach are

  • Unstriated
  • Striated
  • Cardiac
  • None of the above
The joint between scapula and humerus is:
  • Shoulder joint
  • Ball and socket joint
  • Hinge joint
  • Pivot joint
How many legs of cockroach move at the time of walking ?
  • 6
  • 3
  • 2
  • 4
  • Answer required
Which of the following parts of the body are not capable of movement?
  • Toes
  • Elbow
  • Neck
  • None of the above
An example of synovial joint is found between

  • Two vertebrae
  • Two skull bones
  • Humerus and ulna
  • Tail vertebrae
Olecranon process is found in

  • Proximal end of ulna
  • Distal end of ulna
  • Proximal end of tibia
  • Proximal end of humerus
If the collagen fibres hold the bones firmly together such that they cannot change the position relative to each other, the joint is
  • Immovable joint.
  • Slightly movable joint.
  • Freely movable joint.
  • Sliding joint.
The H-zone in the skeletal muscle fibre is due to
  • The absence of myofibrils in the central portion of A-band.
  • The central gap between myosin filaments in the A-band.
  • The central gap between actin filaments extending through myosin filament in the A-band.
  • Extension of mysoin filaments in the central portion of the A-band.
Which of the following joints would allow no movement?
  • Ball and socket joint
  • Fibrous joint
  • Cartilaginous joint
  • Synovial joint
Which one of the following is the the correct description of a certain part of a normal human skeleton?
  • Glenoid cavity is a depression to which the thigh bone articulates.
  • Parietal bone and the temporal bone of the skull are joined by fibrous joint.
  • First vertebra is axis, which articulates with the occipital condyles.
  • The 9$$^{th}$$ and 10$$^{th}$$ pairs of ribs are called the floating ribs.
Myosin head separates from actin when?
  • ATP hydrolysis
  • When ATP attached to myosin head
  • When ATP releases from myosin head
  • When ATP releases from Actin
Skeletal muscles appear striated due to presence of two characteristic proteins in alternating dark and light bands. Which of the following is a correct match of the protein with its light refractive property and colour?
  • Protein : Myosin, Colour : Light, Property : Anisotropic
  • Protein : Actin, Colour : Dark, Property : Anisotropic
  • Protein : Myosin, Colour : Dark, Property : Isotropic
  • Protein : Actin, Colour : Light, Property : Isotropic
ATPase activity in muscle fibre lies with
  • Light meromyosin
  • Head of heavy meromyosin
  • Troponin
  • Short arm of heavy meromyosin
The place where two bones meet is called a __________.
  • skull
  • joint
  • ligament
  • tendon
In resting stage, binding sites for myosin on actin filaments are masked by
  • Troponin
  • Light meromyosin
  • Heavy meromyosin
  • Calcium ions
Sprain involves
  • Overstretching of ligament
  • Overstretching of tendon
  • Dislodging of bone
  • Both A and B
Which of the following is not a function of skeletal system?
  • Production of eythrocytes
  • Storage of minerals
  • Production of body heat
  • Locomotion
Thick filaments in muscles are polymerised proteins of
  • Meromyosin
  • Actin
  • Troponin
  • Tropomyosin
  • Keratin
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