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Structural Organisation in Animals Test - 33

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Structural Organisation in Animals Test - 33
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  • Question 1
    1 / -0
    Belly of a muscle is
    Solution
    Most of the skeletal muscles are attached to the bone on their ends by tendons. As the muscles contract, a force is exerted on the bones, which helps to support and move our body along with its appendages. Usually, one end of the muscle is fixed in its position, while the other end moves during contraction.
    The "origin" is the attachment site that doesn't move during contraction, while the "insertion" is the attachment site that does move when the muscle contracts. The insertion is usually distal, or further away, while the origin is proximal, or closer to the body, relative to the insertion. "Belly" of muscle is between origin and insertion.
  • Question 2
    1 / -0
    Ligaments connects
    Solution
    A ligament is the fibrous connective tissue that connects bones to other bones. Ligaments are similar to tendons and fasciae as they are all made of connective tissue. Tendons connect muscle to bone and fasciae connect muscles to other muscles. So, the correct answer is option A.
  • Question 3
    1 / -0
    Minimum regeneration power is present in, which of the following tissue?
    Solution
    The minimum power of regeneration is found in nervous tissues. Sometimes, it is also considered that power of regeneration is absent in nervous tissues. There is no cell division observed after maturity in nervous tissues.
    So, the correct answer is option A.
  • Question 4
    1 / -0
    The main function of ligament is
    Solution
    Ligaments are made up of tough, fibrous tissue and are found around the joints of the body. The ligaments connect the bone to bone at the union of the joint. They are elastic in nature, ligaments allow for the controlled movement of joints. 
    So, the correct answer is option A.
  • Question 5
    1 / -0
    ATP-ase activity is found in
    Solution
    Myosin filament is a polymerised protein. Many monomeric proteins, called meromyosin constitute one thick filament. Each meromyosin has two important parts, a globular head with a short arm and a tail, the former being called the heavy meromyosin (HMM) and the latter, the light meromyosin (LMM). The HMM component, i.e., the head and short arm projects outwards at regular distance and angle from each other from the surface of a polymerised myosin filament and are known as the cross arm. The globular head is an active ATPase enzyme and has binding sites for ATP and active sites for actin. Actin is another contractile protein but it lacks ATPase activity.
    Hence the correct option is A.
  • Question 6
    1 / -0
    The type of epithelium found in conjunctiva of eye is
    Solution
    The stratified columnar epithelium is a type of epithelial tissue composed of multiple layers of the group of tall cells arranged in arranged in a pillar form. They are found in the ocular conjunctiva of the eye, in parts of the pharynx, anus, female's uterus, the male urethra and vas deferens. The cells function in secretion and protection. 
    Hence, option B is correct.
  • Question 7
    1 / -0
    Multi unit muscle fibres are found in the:
    Solution
    • Multi-unit smooth cells can be found in the in the trachea, the large elastic arteries, the iris of the eye, in the lungs, erectile tissues of hair follicles ( Arrector pili of the dermis) and the vas deferens in the male genital tract.
    • The response of the whole muscle depends on upon the number of motor units active, the frequency of discharge in the fibers and the relative amount of excitatory and inhibitory input. 
    • Multi-unit smooth muscle activity can be initiated by hormones, but it is not much affected by rapidly stretching the muscle.
    • Hence the correct option is D.
  • Question 8
    1 / -0
    Epimysium of muscles are made up of
    Solution
    Epimysium is the outermost white fibrous connective tissue that completely surrounds and encases skeletal muscle. It is composed of dense irregular connective tissue. The most important biological purposes of this layer are protection from strain and friction. The smoothness of the tissues promotes seamless gliding, and also protect joints and other high-impact areas from rips or tears and promotes smooth movement of the limbs and joints.
    Hence the correct option is A.
  • Question 9
    1 / -0
    Largest muscle is
    Solution
    The gluteus maximus (also known as glutus maximus or, collectively with the gluteus medius and minimus, the glutes) is the largest and most superficial of the three gluteal muscles. It makes up a large portion of the shape and appearance of the hips. It permits a variety of motion and allows us to sit upright.
    Hence the correct option is A.
  • Question 10
    1 / -0
    In camel, number of cervical vertebra is
    Solution
    Like all other mammals, camel also have 7 cervical vertebre. The only exceptions in mammals are the manatee and the 2-toed sloth, which have 6 cervical vertebrae and the 3-toed sloth having 9 cervical vertebrae.
    Hence the correct option is B.
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