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Tissues Test - 84

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Tissues Test - 84
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Weekly Quiz Competition
  • Question 1
    1 / -0
    Who discovered the red blood corpuscles?
    Solution
     Jan Swammerdam was a Dutch biologist and microscopist. He was the first to observe and describe RBCs in 1658.
    So, the correct option is C. ( Jan Swammerdam )
  • Question 2
    1 / -0
    Adipose tissue prevents:
    Solution
    There is a fatty layer under the skin which is known as the subcutaneous tissue layer. It is made up of adipose tissue and it acts as a barrier that stops the heat from escaping the body and that helps in keeping us warm.
    So, the correct option is 'Loss of heat from the body.'
  • Question 3
    1 / -0
    Which one of the following muscles is correctly matched with their locations in the body.
    Solution
    Smooth muscles are seen in the walls of organs like the stomach. It contracts during digestion in order to break down the nutrients. In the heart, cardiac muscles are seen. It is an involuntary striated muscle that constitutes the tissues of the wall of the heart. Urinary bladder possesses smooth muscles whereas triceps possess skeletal muscles.
    So the correct pair is 'Stomach and smooth muscles'.
  • Question 4
    1 / -0
    Which among the following is not a type of muscular tissue?
    Solution
    Skeletal muscle, smooth muscle and cardiac muscle are the three different kinds of muscular tissues present around bones of our body, around the alimentary canal and heart wall respectively.
    So, the correct option is 'None of the above'.
  • Question 5
    1 / -0
    Cell organelle(s) not found in mature erythrocytes of many mammals is/are:
    Solution
    Mature erythrocytes are the only cells which lack a nucleus. They are enucleated. Mature erythrocytes do not have cellular organelles like mitochondria, Golgi apparatus, ribosomes and endoplasmic reticulum in order to accommodate maximum space for haemoglobin. They also do not possess DNA and hence cannot synthesize RNA.
    Thus, the correct answer is option D.
  • Question 6
    1 / -0
    Cardiomyocytes are connected by
    Solution
    There are two types of cells within the heart: the cardiomyocytes and the cardiac pacemaker cells. Both cardiac pacemaker cells and cardiomyocytes are connected by porous junctions called intercalated discs which permit sodium, potassium, and calcium to easily diffuse from cell to cell. This makes it easier for depolarization and repolarization in the myocardium. Because of these junctions, the heart muscle is able to act as a single coordinated unit.
    So, the correct answer is 'Intercalated discs'.
  • Question 7
    1 / -0
    The bulbous structure present at the terminal end of an axon is ________.
    Solution

    A. Synaptic vesicle store various neurotransmitters that are released at the synapse.

    B. Synaptic knob are the bulbous structures present at the terminal end of an axon.

    C. Dendrites, also called dendrons, are branched protoplasmic extensions of a nerve cell that propagate the electrochemical stimulation received from other neural cells to the cell body, or soma, of the neuron from which the dendrites project.

    D. Schwann cells, also called neurilemma cells are any of the cells in the peripheral nervous system that produce the myelin sheath around neuronal axons.

    So, the correct option is 'B'.

  • Question 8
    1 / -0
    Most abundant connective tissue is:
    Solution
    Connective tissues link and support various organs of the body.
    A) Areolar tissue is loose connective tissue and is present beneath the skin and works as its framework. It is the most abundant connective tissue.
    B) Tissue rich in bundles of collagen fibres arranged in rows is known as fibrous tissue. Its function is to provide support.
    C) Adipose tissue is mainly located below the skin and stores fat.
    D) Vascular tissue is that which forms walls of blood vessels. 
    So, the answer is 'Areolar'.
  • Question 9
    1 / -0
    Nodes of Ranvier are found in
    Solution

    Correct answer: A

    Explanation:

    The gaps approx. 1 mm wide formed between the two adjacent myelin sheath cells, along the axons are called as the nodes of Ranvier.

    Nodes of Ranvier are the uncovered part of axons.

    Also they are the periodic gaps in axon that propagate the action potential down an axon.

    Hence, the proper answer is 'Axon'.

     

  • Question 10
    1 / -0
    Name the part of neuron through which information travels as an electrical impulse away from the cell body.
    Solution
    An axon is a long, slender projection of a neuron, that typically conducts electrical impulses away from the neuron's cell body in form of a wave of depolarization. The function of the axon is to transmit information to different neurons, muscles and glands.
    So, the correct option is 'Axon'.
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