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12th Grade > Biology

LOCOMOTION AND MOVEMENT MCQs

Total Questions : 68 | Page 6 of 7 pages
Question 51. The kind of tissue that forms the supportive structure in our pinna (external ear) is also found in
  1.    Tip of the nose
  2.    Vertebrae
  3.    Nails
  4.    Ear ossicles
 Discuss Question
Answer: Option A. -> Tip of the nose
:
A
Pinna is made up of elastic cartilage. It is also found at the tip of nose.
Question 52. Paget’s disease is caused by
  1.    Prolonged deficiency of vitamin D in adults
  2.    Abnormal  bone resorption
  3.    Excess of alkaline phosphatase
  4.    Excess production and abnormal segregation of collagen
 Discuss Question
Answer: Option B. -> Abnormal  bone resorption
:
B
Paget's disease is caused by the excessive breakdown and formation of bone, followed by disorganized bone remodeling. This causes affected bone to weaken, resulting in pain, misshapen bones, fractures and arthritis in the joints near the affected bones.Paget’s Disease Is Caused By
Question 53. Two halves of pelvic girdle are joined by
  1.    A mere fissure
  2.    Ischioiliac symphysis
  3.    Ischiopubic symphysis
  4.    Pubic symphysis
 Discuss Question
Answer: Option D. -> Pubic symphysis
:
D
The pubic symphysis is a secondary cartilaginous joint (a joint made of hyaline cartilage and fibrocartilage) located between the left and right pubic bones near the midline of the body.
Two Halves Of Pelvic Girdle Are Joined ByTwo Halves Of Pelvic Girdle Are Joined By
Question 54. Cardiac muscles are straited muscles with fibres being
  1.    Multinucleated and voluntary
  2.    Multinucleated and involuntary
  3.    Nucleated and  voluntary
  4.    Nucleated and involuntary
 Discuss Question
Answer: Option D. -> Nucleated and involuntary
:
D
Cardiac muscles contain a single nucleus and are involuntary in function.
Question 55. The vertebra which bears the whole weight of the skull is
  1.    Axis
  2.    Sacrum
  3.    Atlas
  4.    Clavicle
 Discuss Question
Answer: Option C. -> Atlas
:
C
The atlas is one of the two upper cervical vertebrae, also known as C1, which is the topmost vertebra of the spinal column. It is the vertebra that is in contact with the occipital bone, a flat bone located at the back portion of the head.This first cervical bone is named after the mythical Greek god who carried the world on his shoulders, as its function is to support the globe of the head. Together with the second vertebra, the axis, it is responsible for the wide range of motion of the head.
Question 56. Number of bones present in human cranium is
  1.    8
  2.    10
  3.    12
  4.    16
 Discuss Question
Answer: Option A. -> 8
:
A
The neurocranium is comprised of eight bones:
one occipital, two temporal bones, two parietal bones, one sphenoid, one ethmoid and the frontal bone.
Question 57. Which bone or bones does not/do not belong to the axial skeleton?
  1.    Skull
  2.    Hip bone
  3.    Ribs
  4.    Spinal column
 Discuss Question
Answer: Option B. -> Hip bone
:
B
The axial skeleton is the part of the skeleton that consists of the bones of the head and trunk of a vertebrate. In the human skeleton, it consists of 80 bones and is composed of six parts; the skull bones, the ossicles of the middle ear,the rib cage, sternum and the vertebral column.
The appendicular skeleton is the portion of the skeleton of vertebrates consisting of the bones or cartilage that support the appendages. The appendicular skeleton consists of the girdles and the skeleton of the limbs. The upper (anterior) limbs are attached to the pectoral (shoulder) girdle and the lower (posterior) limbs are attached to the pelvic (hip) girdle.
Question 58. Joints are lubricated by:
  1.    Synovial fluid
  2.    Peritoneal fluid
  3.    Pleural fluid
  4.    Lymphatic fluid
 Discuss Question
Answer: Option A. -> Synovial fluid
:
A
Synovial fluid is a viscous fluid found in the cavities of synovial joints. With its egg white–like consistency, the principal role of synovial fluid is to reduce friction between the articular surfaces of synovial joints during movement.
Pleural fluid -Pleural fluidis thefluidthat is found between the layers of thepleura, the membranes that line the thoracic cavity and surround the lungs.
Lymphatic fluid - contains infection-fighting white blood cells, which circulates throughout the body.
Peritoneal Fluid - is a liquid made in the abdominal cavity which lubricates the surface of tissue that lines the abdominal wall and pelvic cavity.
Question 59. The periheral nervous system stimulates
  1.    Skeletal muscles
  2.    Cardiac muscles
  3.    Smooth muscles
  4.    None of the above
 Discuss Question
Answer: Option A. -> Skeletal muscles
:
A
The peripheral nervous system(PNS) is under your voluntarycontrol- thenervesthat carry instructions from your brain to your limbs, for example. As well as controlling your muscles and joints, it sends all the information from your senses back to your brain.The autonomic nervous system(ANS) is a division of the peripheralnervous systemthat influences the function of internal organs such as the heart, stomach and intestines.
Question 60. Muscles are red because of the presence of
  1.    Myoglobin
  2.    Haemoglobin
  3.    Globulin
  4.    Phycoerythrin
 Discuss Question
Answer: Option A. -> Myoglobin
:
A
Red muscles musclefibres are darkredwhich isdue to the presence of redhaemoprotein called myoglobin.
Hemoglobinin its deoxygenated state has a low affinity for oxygen compared to myoglobin(it is present only in muscles)
Globulins, albumin, and fibrinogen are the major blood proteins.
Phycoerythrin(PE) is a red protein-pigment complex from the light-harvesting phycobiliprotein family, present in red algae and cryptophytes

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