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NEET UG Neural Control and Chemical Coordination — practice questions — page 2

Explore 141 free Neural Control and Chemical Coordination questions in NEET UG Biology. Open each question or exercise to read its content, reference answers and available explanation.

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Neural Control and Chemical Coordination questions and exercises with answers

Showing questions 31–60 of 141.

Which cells of the pancreas secrete glucagon?Read the answer and worked solution →Deficiency of iodine in the diet leads to hypothyroidism and which condition?Read the answer and worked solution →Melatonin plays an important role in regulating a rhythm of what length?Read the answer and worked solution →Hormones from the hypothalamus fall into releasing hormones and which other type?Read the answer and worked solution →Oxytocin and vasopressin are stored and released by which part of the pituitary?Read the answer and worked solution →Over-secretion of growth hormone leads to which condition?Read the answer and worked solution →Excess growth hormone in middle-aged adults results in which condition?Read the answer and worked solution →Glucagon acts mainly on which cells of the body?Read the answer and worked solution →Which thyroid hormone regulates blood calcium by decreasing it?Read the answer and worked solution →Parathyroid hormone is described as which kind of hormone?Read the answer and worked solution →Adrenaline and noradrenaline are known by which name because of when they are released?Read the answer and worked solution →Underproduction of adrenal cortex hormones leads to which named disease?Read the answer and worked solution →Which corticoids regulate the balance of water and electrolytes in the body?Read the answer and worked solution →Which hormone secreted by the atrial wall of the heart decreases blood pressure?Read the answer and worked solution →Which hormone produced by the kidney stimulates the formation of red blood cells?Read the answer and worked solution →Send each hormone homeRead the answer and worked solution →Match the disorder to its causeRead the answer and worked solution →Insulin against glucagonRead the answer and worked solution →Spot the false statementRead the answer and worked solution →Which organ secretes itRead the answer and worked solution →Hydra's nervous system is just a network of neurons. Insects are better organised because they have a:Read the answer and worked solution →The brain and spinal cord together form the:Read the answer and worked solution →A nerve fibre carrying an impulse from your skin to the CNS is:Read the answer and worked solution →Your heart rate and gut movement are controlled without thought by the:Read the answer and worked solution →A neuron has three major parts: cell body, axon and:Read the answer and worked solution →The bulb at the tip of an axon branch holding neurotransmitter vesicles is the:Read the answer and worked solution →The gaps between adjacent myelin sheaths are called:Read the answer and worked solution →At rest, the axon membrane is more permeable to:Read the answer and worked solution →The sodium-potassium pump moves 3 sodium ions out for every ___ potassium ions in.Read the answer and worked solution →The potential difference across a resting neuron membrane is the:Read the answer and worked solution →

Worked practice questions

Which cells of the pancreas secrete glucagon?

  1. The axial cells
  2. The alpha cells
  3. The amber cells
  4. The apex cells
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Correct answer: B. The alpha cells

1. Insulin comes from one of the two islet cell types. 2. Glucagon comes from the other. 3. The alpha cells secrete a hormone called glucagon. 4. So the answer is the alpha cells. _Source: syllabus Biology, Ch 19 'Chemical Coordination and Integration'_

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Deficiency of iodine in the diet leads to hypothyroidism and which condition?

  1. Eczema
  2. Rickets
  3. Goitre
  4. Anaemia
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Correct answer: C. Goitre

1. Thyroid hormones are built around iodine. 2. Without iodine the gland enlarges as it works harder. 3. Deficiency of iodine results in hypothyroidism and enlargement of the thyroid gland, commonly called goitre. 4. So the answer is goitre. _Source: syllabus Biology, Ch 19 'Chemical Coordination and Integration'_

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Melatonin plays an important role in regulating a rhythm of what length?

  1. Twenty-nine hours
  2. Thirty-four minutes
  3. Thirty-nine minutes
  4. Twenty-four hours
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Correct answer: D. Twenty-four hours

1. Melatonin comes from the pineal gland. 2. It governs the daily cycle of sleeping and waking. 3. Melatonin plays a very important role in the regulation of a 24-hour rhythm of our body. 4. So the answer is twenty-four hours. _Source: syllabus Biology, Ch 19 'Chemical Coordination and Integration'_

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