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Tissues Test - 36

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Tissues Test - 36
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  • Question 1
    1 / -0
    Cardiac muscle fibres differ from skeletal muscles because these are:
    Solution
    Cardiac muscles have the property of both the striated muscles (skeletal muscle) and unstriated muscles (smooth muscle). Cardiac muscle is involuntary like smooth muscle and has striations like skeletal muscle. 
    Thus, the correct answer is option A.
  • Question 2
    1 / -0
    Different types of muscle tissues include:
    Solution
    There are three types of muscle tissue - smooth or unstriated, skeletal or striated, and cardiac.
    • Smooth or unstriated muscles line the walls of internal organs like the stomach, intestine, lungs, etc. They are spindle-shaped involuntary muscles.
    • Skeletal or striated muscles are voluntary muscles attached to the skeleton. They help in the movement of bones and the body. 
    • Cardiac muscles are involuntary muscles located in the walls of the heart. They appear striated and are branched. 
    Thus, the correct answer is option D.



  • Question 3
    1 / -0
    Myoglobin is found in
    Solution
    Myoglobin is a protein found in the muscle cells of animals. It functions as an oxygen-storage unit, providing oxygen to the working muscles.
    Thus, the correct answer is option (A), 'Muscles'.
  • Question 4
    1 / -0
    Bone matrix is rich in
    Solution
    The bone matrix contains bone minerals also known as hydroxyapatite, which consists of mainly calcium and phosphorus with trace amounts of sodium, magnesium, and bicarbonate. Fluorides, potassium and phosphorous are not found insignificant amounts in the bone.
    Hence the correct option is B.
  • Question 5
    1 / -0
    Which of the following is not a function of epidermis?
    Solution
    • Epidermis is a single layer of cells found on theouter layers of different parts of a plant -leaves, flowers, roots, stem, etc.  Its functions are as follows:
    • It forms a barrier between the underlying tissues in a plant and the surrounding environment, thereby, protecting it from adverse environmental conditions.
    • The presence of stomata and guard cells in the epidermal tissue helps in the exchange of oxygen, carbon dioxide as well as permit transpiration.

    • Conduction of water and minerals in plants takes place in conducting vessels, located in the core, called xylem. Thus conduction of water is not the function of the epidermis.
    Hence the correct option is C.
  • Question 6
    1 / -0
    While doing work and running, you move your organs like hands, legs etc. Which among the following is correct?
    Solution
    • Smooth muscles are located in the visceral organs of the body. For example, urinary bladder, uterus, respiratory tract, etc. 
    • These muscles are not connected to bones and do not function in movements like walking and running. 
    • In contrast, skeletal muscles attach directly to the skeleton which synchronizes the movement of muscles with bones. 
    • These skeletal muscles are attached to bones with a tough, flexible band of fibrous connective tissue called tendon. 
    • When the skeletal muscles contract, it pulls the tendon attached to the bone, aiding to the movement of bones. 

    Thus, the correct answer is option D - 'Skeletal muscles contract and pull the tendon to move the bones.'
  • Question 7
    1 / -0
    Voluntary muscles are found in___________________.
    Solution
    A voluntary muscle often called as a skeletal muscle, is one of three types of muscle in the body. Most voluntary muscles are used to move bones, though some, such as the muscles in the face, are used to create movements below the skin. Unlike cardiac or smooth muscle, these muscles can be controlled by the conscious mind.
    Alimentary canal, bronchi of lungs and iris in the eye are made up of involuntary muscles. 
    So, the correct answer is option B.
  • Question 8
    1 / -0
    Which of the following helps in repair of tissue and fills up the space inside the organ?
    Solution
    • Areolar tissue helps in the repair of tissue and fills up space inside the organ. 
    • The ground substance of areolar tissue fills all of the spaces between the cells and fibres.
    • It is found in many locations around the body. 
    • The areolar tissue located on the skin binds the outer layers of the skin to the muscles beneath. 
    So, the correct answer is option C.
  • Question 9
    1 / -0
    Nissl granules are absent in
    Solution
    Correct option: A

    Explanation:
    • Nissl granules are absent in Axon. The neuron is made up of a cell body (cyton), dendrites (dendron), axons and axon terminals. Nissl granules are discrete structures, which consist rough endoplasmic reticulum and free ribosomes. It is the main site for synthesize of proteins in neurons.
    • These are found in somata and dentrites region of the neuron, and not in the axon or axon hillock regions. 
    • Thus, Option A is correct.

  • Question 10
    1 / -0
    Shivering, when in cold water is caused by
    Solution
    The muscles are capable of utilizing only about 20% to 40% of energy in their mechanical work, liberated from glucose. The unutilized energy is lost as 'heat' dissipated into the environment. This heat helps in maintenance of body temperature.
    Shivering with colds in winters is caused by a quick involuntary reaction of striated muscles. It yields some heat just to warm the body.
    Thus, the correct answer is option C.
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