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Tissues Test - 42

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Tissues Test - 42
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Weekly Quiz Competition
  • Question 1
    1 / -0
    Bone matrix is rich in______________.
    Solution
    • Bone is not a uniformly solid material, but is mostly a matrix. The primary tissue of bone, is relatively hard and light-weighted. 
    • Its matrix is mostly made up of a composite material incorporating the inorganic mineral calcium phosphate and organic collagen, an elastic protein, which improves fracture resistance. 
    • Bone is formed by the hardening of this matrix around entrapped cells. 
    Hence the correct option is B.
  • Question 2
    1 / -0
    Skeletal muscle is composed of the repeating structures of .............. and ............... fibers.
    Solution
    Skeletal muscles consist of repeating structures of actin and myosin fibers. They form the thin and thick filaments respectively whose alternative arrangement within the myofibrils give these muscles a striated appearance.
    Hence the correct option is D.
  • Question 3
    1 / -0
    Protection from ultraviolet rays is provided by
    Solution
    Human skin is repeatedly exposed to the ultraviolet radiation that influences the function and survival of many cell types and is regarded as the main causative factor in the induction of skin cancer. Skin pigmentation is considered to be the most important photoreceptive factor as melanin functions not only as a broadband UV absorbent but also has antioxidant and radical scavenging properties.
    Thus, the correct answer is option D.
  • Question 4
    1 / -0
    Which of the following muscles can be voluntarily controlled?
  • Question 5
    1 / -0
    Lymphoid tissue in intestine is
    Solution
    Peyer's patches are also called as aggregated lymphoid nodules. They are organized lymphoid nodules. They are usually found in the lowest portion of the small intestine, the ileum, in humans (and not in duodenum and jejunum). Peyer's patches play an important role in immunity. They trap the foreign particles and destroy them.
    Hence the correct option is C.
  • Question 6
    1 / -0
    Most abundant cells of areolar tissue are:
    Solution

    Areolar connective tissue is a soft tissue surrounding the blood vessels and nerves and forming the layer that flexibly attaches the skin to the muscles. Fibroblasts are the most abundant and common cells in areolar connective tissue.

    So, the correct answer is option A.

  • Question 7
    1 / -0
    Calcium and phosphorous as the major inorganic components are present in:
    Solution
    Bone is made up of :
    A. Organic components, which make up 40% of dry weight.
    B. Inorganic compounds, which make up 60% of dry weight. They mainly include salts of calcium and phosphate embedded in the matrix.
    Thus, the correct answer is option B.
  • Question 8
    1 / -0
    The contraction of which muscle is involuntary, vigorous and rhythmic?
    Solution
    Cardiac muscles are the muscles of the heart. They are self-contracting, autonomically regulated (meaning involuntary) and must continue to contract in a rhythmic fashion for the whole life of the organism.
    Thus, the correct answer is option (B), 'Cardiac muscles'.
  • Question 9
    1 / -0
    Which of the following are simple tissues?
    Solution

    Parenchyma, collenchyma, and sclerenchyma are called simple tissues. They are made up of similar kinds of cells. Vascular tissues are complex tissues as they are heterogeneous in nature with different types of cells. The main elements are the xylem, phloem and pericycle.

    Thus, the correct option is B.

  • Question 10
    1 / -0
    High contents of myoglobin and cytochromes are present in
    Solution
    Red muscle exhibits a fused contraction at a slower frequency of stimulation. The red color of muscles is due partly to myoglobin, which is probably freely dissolved in the sarcoplasm and partly to the cytochrome, which are mainly associated with the particulate components of the cytoplasm.
    Thus, the correct answer is option (A), 'Red muscles'.
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