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Chemical Coordination and Integration Test 9

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Chemical Coordination and Integration Test 9
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Weekly Quiz Competition
  • Question 1
    1 / -0
    Hassall corpuscles are characteristic of
    Solution
    Hassall's corpuscles also called thymic corpuscles, are structures found in the medulla of the human thymus, formed from eosinophilic type VI epithelial reticular cells, arranged concentrically.
    Thus, the correct answer is option (A), 'Thymus'.
  • Question 2
    1 / -0
    Which one of the following pairs refers to one and the same thing?
    Solution
    Adrenal glands are very important components of the vertebrate endocrine system. They secrete steroids and catecholamines. The adrenals are also called as suprarenal glands. This term reflects their location. These glands are located on top of the kidney.
  • Question 3
    1 / -0
    Which one of the following types of cell in the epidermis interacts with white blood cells, called helper T cells in immune response and are very easily damaged by UV radiations?
    Solution
    Langerhans cells are a special type of dendritic cell, present in the skin. Once activated, they migrate to the lymph nodes, where they interact with the T cells and the B cells to initiate and shape the adaptive immune response.
    Thus, the correct answer is option (B), 'Langerhans cells'.
  • Question 4
    1 / -0
    In our body, calcium and phosphorus ions are controlled by
    Solution
    The parathyroid glands are four tiny glands embedded in the thyroid gland, located in the neck, that control the body's calcium levels. Each gland is about the size of a grain of rice. The parathyroids produce a hormone, called as parathyroid hormone (PTH) or parathormone which regulates the blood calcium level and phosphate level. Its major target cell is in kidney and bone
    So, the correct answer is 'Parathyroid gland'
  • Question 5
    1 / -0
    The hormones responsible for puberty in man are released by
  • Question 6
    1 / -0
    Which hormone should be injected to diabetes mellitus patient for controlling the increased blood sugar?
    Solution

    Insulin is a hormone produced by beta cells of the pancreas which plays a role in the absorption of sugar i. e glucose from the blood. When there is an insufficient insulin produced or when insulin is not produced at all, glucose levels in the blood rise and results in diabetes mellitus. As diabetes mellitus is a metabolic disorder characterized by increased glucose levels in the blood due to lack of insulin or low insulin secretion by the pancreas, the hormone insulin has to be injected in order to bring down the blood glucose to normal levels. So, the correct answer is option A.

  • Question 7
    1 / -0
    Which hormone regulates calcium level in blood?
    Solution
    When blood calcium levels drop, the parathyroid gland secretes parathyroid hormone. This hormone works to raise blood calcium levels by stimulating osteoclasts to break down bone and release calcium into the blood stream. PTH also signals kidneys to conserve calcium by reducing the amount excreted in the urine.The hormone also stimulates kidney production of the active form of vitamin D, which triggers increased calcium absorption from the gut.
  • Question 8
    1 / -0
    One of the constituents of the pancreatic juice, which is released into the duodenum of a man is 
    Solution
    Trypsinogen is an important protein splitting proenzyme present in pancreatic juice. Chymotrypsinogen and procarboxypeptidase are the other protein splitting proenzymes present in pancreatic juice. The trypsinogen is activated by the enzyme enterokinase. The active trypsin in turn activates chymotrypsinogen to chymotrypsin and procarboxypeptidase to carboxypeptidase.
  • Question 9
    1 / -0
    Islets of Langerhans are
    Solution
    Pancreas is a compound gland. In addition to secreting digestive enzymes, the pancreas is an important endocrine gland. Its hormones, insulin and glucagon, are secreted by cells, that occur in little clusters, the islets of Langerhans, throughout the pancreas. About 1 million islets are present in the human pancreas. They consist mainly of beta cells, which secrete insulin, and alpha cells, which secrete glucagon.
  • Question 10
    1 / -0
    Pancreatic juice takes part in digestion of 
    Solution
    Pancreatic fluid or juice contains digestive enzymes, that pass to the small intestine, where they help to further break down the carbohydrates, proteins, and lipids (fats) in the chyme. Pancreatic juice contains a variety of enzymes including trypsinogen, chymotrypsinogen, elastase, carboxypeptidase, pancreatic lipase, nucleases, and amylase. Thus, it helps in digestion of proteins, fats and carbohydrates.
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