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Tissues Test - 41

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Tissues Test - 41
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  • Question 1
    1 / -0
    Which of the following tissue belongs to the category of loose connective tissue?
    Solution

    • Cartilage has widely spaced cells interspersed in the matrix made of proteins and sugars. It covers the ends of bones at joints and provides for easy movement. The main functions of white fibrous tissue involve supporting and protecting the surrounding structures. 
    • Areolar connective tissue is a type of loose connective tissue, which is found in between the skin and the muscles, around blood vessels, nerves. It is also found in the bone marrow. 
    • In this way, it fills the space inside the organ, supports the internal organ and also helps in tissue repair. Yellow fibrous tissue enables organs and parts of organs to stretch (and contract). This is important when the function of the organ involves movement like expansion and contraction of membranes e.g. of lung tissue. 
    • So, the correct answer is option B.

  • Question 2
    1 / -0
    Which tissue does lack blood supply and heals slowly?
    Solution
    • Nervous tissue is well supplied with blood vessels. 
    • Muscle tissue has an abundant blood supply. 
    • Bone cells are embedded in a hard matrix that is made up of salts of calcium and phosphate. Bone is supplied with blood vessels through the haversian canal. 
    • Cartilage has widely spaced cells that are embedded in the matrix made of proteins and sugars. Cartilage has limited repair capabilities because chondrocytes are bound in lacunae and hence they cannot migrate to damaged areas. Therefore, cartilage damage is difficult to heal. Also, because hyaline cartilage does not have a blood supply, the deposition of the new matrix is slow. 

    Therefore, option C is correct. 


  • Question 3
    1 / -0
    Cartilage and bone are types of
    Solution
    • Cartilage has widely spaced cells and interspersed in the matrix made of proteins and sugars. It covers the ends of bones at the joint. 
    • Bone is made of cells that are embedded in a hard, rigid, compact matrix. It forms the framework of the body. 
    • Connective tissue is composed of fibers, ground substance, and cells. Bone and cartilage are examples of connective tissue that provides mechanical support and framework to the body.
    So, the correct option is C.
  • Question 4
    1 / -0
    Which of the following muscles act involuntarily?
    Solution
    The involuntary muscles perform the activity on its own. The movement of these muscles cannot be controlled willingly. The smooth muscles are present in the lining of the tubular organs of the digestive system. These muscles are involuntary and perform the function of peristalsis. Cardiac muscle is the muscle found in the wall of the heart. It is an important type of muscular tissue which works automatically (involuntary) and thus, called as involuntary muscles. 
    Thus, the correct answer is option D.
  • Question 5
    1 / -0
    A characteristic of skeletal muscle is_______________.
    Solution
    Skeletal muscle is a form of striated muscle tissue which is under the control of the somatic nervous system; that is to say, it is voluntarily controlled. 
    Striated muscle gets tired after strenuous exercise after creatine phosphate stores are exhausted. During normal process, creatine phosphate is converted to creatine and phosphate is released to make one ATP from ADP.  But when creatine stores are exhausted after strenuous exercise, then glucose undergoes glycolysis to form pyruvic acid which is then converted to lactic acid which gives rise to ATP and muscle need is fulfilled. But eventually lactic acid builds up in muscle and pH drops and muscle get fatigue.
    Therefore, option D is correct.  
  • Question 6
    1 / -0
    Haemoglobin is involved in _____________.
    Solution
    • Haemoglobin is a conjugated protein molecule present in the red blood cell. It has a globin part and a heme part, containing iron. It carries oxygen from the lungs to body tissues and returns the carbon dioxide from tissues back to the lungs. 
    • Hemoglobin transports oxygen by forming oxyhemoglobin complex and carbon dioxide by forming carbaminohemoglobin. It is not involved in the transport of hormones.
    Hence, the correct option is D.
  • Question 7
    1 / -0
    The spindle-shaped, uninucleate, unbranched and involuntary cells are present in
    Solution
    Striated muscles are cylindrical, unbranched, multinucleate and voluntary. 
    Cardiac muscle cells are cylindrical, branched, uninucleate and involuntary. 
    Smooth muscles are spindle-shaped, uninucleate, unbranched and involuntary. Therefore, option B is correct.

  • Question 8
    1 / -0
    Which of the following muscles do act involuntarily?
    Solution
    Striated muscles are cylindrical, unbranched, multinucleate and voluntary. These muscles are attached to bones hence, called as skeletal muscles. These muscles are under control of the conscious will.
    Smooth muscles are spindle-shaped, uninucleate, unbranched and involuntary. These muscles are not under control of the conscious will. 
    Cardiac muscle cells are cylindrical, branched, uninucleate and involuntary. These muscles are not under control of the conscious will. 
  • Question 9
    1 / -0
    Select the incorrect sentence.
    Solution
    • Blood is a type of connective tissue in which red blood cells, white blood cells and platelets are suspended in a fluid matrix containing proteins, salts and hormones. 
    • The ligament is a fibrous connective tissue, which connects bone to another bone.
    • Cartilage is a type of connective tissue having widely spaced cells, which are interspersed in the matrix made of proteins and sugars. 
    • Tendon is a tough, fibrous connective tissue, which connects muscle to bone. Tendons have great strength. 
    So, the correct answer is option C.
  • Question 10
    1 / -0
    Contractile proteins are not found in_____________.
    Solution
    Muscle cells are composed of muscle fibers or myocytes. They contain specific proteins called contractile proteins that help in muscle contraction.
    Bone cells are embedded in the hard matrix, which is made up of salts of calcium and phosphate. Bones do not perform contraction as a function. Therefore, contractile proteins are not present in bone. 
    Blood is a type of connective tissue in which red blood cells, white blood cells, and platelets are suspended in the fluid matrix containing proteins, salts, and hormones. As it does not perform contractile function, contractile proteins are absent. 
    Cartilage is a type of connective tissue having widely spaced cells, which are interspersed in a matrix made of proteins and sugars. At some places like ear pinna, cartilage can fold but it does not contract and relax. Hence, such proteins are absent in cartilage. 
    Hence the correct option is D.
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