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Locomotion and Movement Test - 8

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Locomotion and Movement Test - 8
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  • Question 1
    1 / -0
    The cells of human body exhibits type of movement is
    Solution
    Movement is a characteristic feature of living organisms. The different types of movement exhibited by cells of the human body are: 
    • Amoeboid movement: Leucocytes present in the blood show amoeboid movement. 
    • Ciliary movement: Reproductive cells such as sperms and ova show ciliary movement.
    • Muscular movements:  Muscle tissue found inside of the heart, digestive organs, and blood vessels serve to move substances throughout the body. Hence, The cells of the human body exhibit type of movement are Amoeboid, Ciliary, and Muscular.
    So, the correct answer is 'All of the above'.
  • Question 2
    1 / -0
    Fundamental repeating unit of skeletal myofibrils is
    Solution
    All striated muscles are made up of certain basic repeating units. These are called sarcomeres.  It encloses two I bands and one A band. It occurs between 2 Z lines in a muscle fibre. They are made up of 2 actin filaments and a myosin filament. Muscle contraction and relaxation occurs through it.

  • Question 3
    1 / -0

    Which of the following is the form of locomotion?

    Solution
    Locomotion can be seen in  different media. 
    Animals move through, or on, four types of environment: 
    • Aquatic (in or on water), 
    • terrestrial (on the ground or other surfaces, including arboreal, or tree-dwelling),
    •  fossorial (underground), and 
    • aerial (in the air). Hence, Swimming is the form of locomotion.
    So, the correct answer is 'Swimming'.
  • Question 4
    1 / -0
    The place where two bones meet is called a __________.
    Solution
    In the joint there is a fluid which acts as a llubricant. This fluid is called the synovial fluid.
  • Question 5
    1 / -0
    Contractile fibrils of muscles are called
    Solution
    • Each muscle fibre(muscle cell) is lined by the plasma membrane called sarcolemma enclosing the sarcoplasm (cytoplasm of muscle fibre). 
    • The characteristic feature of the muscle fibre(muscle cell) is the presence of a large number of parallelly arranged filaments in the sarcoplasm called myofilaments or myofibrils.
    • Each myofibril is made up of two kinds of proteins. They are actin and myosin.
    • The function of the myofibril is to perform muscle contraction via the sliding filament model. Hence Contractile fibrils of muscles are called myofibrils.
    • So, the correct answer is 'Myofibrils'.
  • Question 6
    1 / -0
    Myofibrils show dark and light bands in
    Solution
    • The striated appearance of skeletal and cardiac muscle tissue is a result of repeating bands of the proteins actin and myosin that are present along the length of the myofibril.
    • The light bands contain actin and are called I-band or Isotropic band, whereas the dark band called ‘A’ or Anisotropic band contains myosin. Hence called striped muscles due to the presence of striations.
    • Hence Myofibrils show dark and light bands in Cardiac muscles and striped muscles.
    • So, the correct answer is 'Both A and C'.
  • Question 7
    1 / -0
    Pelvic girdle consists of
    Solution
    • Pelvic girdle consists of two coxal bones. Each coxal bone is formed by the fusion of three bones i.e each half of pelvic girdle is made up of ilium, ischium, and pubis.
    •  At the point of fusion of the ilium, ischium and pubis bones there is a cavity called acetabulum to which the thigh bone(femur) articulates. 
    • Hence pelvic consists of of Ilium, ischium, and pubis.
    • So,the correct answer is 'Ilium,ischium and pubis'.
  • Question 8
    1 / -0
    Which of the following opening occurs in pair?
    Solution
    • Pelvic girdle consists of two coxal bones. Each coxal bone is formed by the fusion of three bones – ilium, ischium, and pubis. 
    • The large opening formed by the ischium and pubis bones of the pelvis is called the obturator foramen.
    • Nerves and blood vessels pass through the obturator foramen.
    • As each coxal bone consist of ischium and pubis bones. Two obturator foramen are formed one in each pelvic girdle. Hence the opening occurs in the pair is obturator foramen.
    • So, the correct answer is 'Orburator foramen'.
  • Question 9
    1 / -0
    Part of the body having a single pair of bones is
    Solution
    The pelvic girdle consists of a single pair of bones, called hip bones. They are connected at the front by cartilage called the pubic symphysis and they are attached to the sacrum at the back. Each hip bone is made up of three bones which are ilium, ischium and pubis. So, the correct answer is 'Pelvic girdle'.
  • Question 10
    1 / -0

    All movement of human body is coordinated and controlled by

    Solution
    • Your brain sends messages through your spinal cord and the peripheral nervous system to: control the movement of your arms and legs. control the automatic functions of your body, such as the operations of your heart, your organs and your glands. Hence, All movement of the human body is coordinated and controlled by the Nervous system.
    So, the correct answer is 'Nervous system'.
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