Fsc Part 2 Online Preparation for Biology Chapter 17 (Coordination and Control)

Online Short Questions For Chapter 3 "12th Class Biology Chapter 17 Short Questions Preparation "

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Biology - 12th Class Biology Chapter 17 Short Questions Preparation

Question # 1

What is neurogila?Give its role.

  • Ans 1: In higher animals half of the nervous system consists of neurogila cells.It plays a vital role in the nutrition of neurons and their protection by myelin sheath.
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Prepare Complete Set Wise Questions For Chapter 3 "12th Class Biology Chapter 17 Short Questions Preparation "

12th Class Biology Chapter 17 Short Questions Preparation - Set 1

Question # 1

What is neurogila?Give its role.

  • Ans 1: In higher animals half of the nervous system consists of neurogila cells.It plays a vital role in the nutrition of neurons and their protection by myelin sheath.
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12th Class Biology Chapter 17 Short Questions Preparation - Set 2

Question # 1

Mention the relative abundance and distribution of receptors in human skin.

  • Ans 1: The relative abundance of various types of receptors differs greatly for example pain receptors are nearly 27 times more abundant than cold receptors.The cold receptors are nearly 10 times more abundant than heat or temperature receptors.
  • Ans 2: The receptors are not distributed evenly over the entire surface of the body.For example touch receptors are much more numerous in the finger than in the skin of the back.
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12th Class Biology Chapter 17 Short Questions Preparation - Set 3

Question # 1

Mention the relative abundance and distribution of receptors in human skin.

  • Ans 1: The relative abundance of various types of receptors differs greatly for example pain receptors are nearly 27 times more abundant than cold receptors.The cold receptors are nearly 10 times more abundant than heat or temperature receptors.
  • Ans 2: The receptors are not distributed evenly over the entire surface of the body.For example touch receptors are much more numerous in the finger than in the skin of the back.
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12th Class Biology Chapter 17 Short Questions Preparation - Set 4

Question # 1

Give the role of insulin and glucagon.

  • Ans 1: Insulin controls the blood sugar level by different ways.It may be as
  • Ans 2: By converting glucose in to glycogen
  • Ans 3: By converting glucose in to proteins or fats
  • Ans 4: By increasing its utilization in the cell
  • Ans 5: By inhibiting the conversion of glycogen in to glucose
    Glucagon increases the blood sugar level. This is done by converting stored glycogen in to glucose.
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12th Class Biology Chapter 17 Short Questions Preparation - Set 5

Question # 1

Define synapse.

  • Ans 1: There are the microscopic gaps between the two neurons where neurotransmitters are secreted and nerve impluse is transferred from one neuron to next neuron.
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12th Class Biology Chapter 17 Short Questions Preparation - Set 6

Question # 1

Compare sympathetic nervous system with parasympthetic nervous system.

  • Ans 1: Parasympathetic nervous system A few cranial nerves including the vagus nerve together with the fibre from bottom portion of spinal cord from PNS.it promotes all the internal responses which are associated with the relaxed state i.e,contraction of pupil,promotes food digestion and retards heart beat.
  • Ans 2: Sympthethic nervous system Most ganglion fibers of the sympathetic nervous system arise from the middle portion of the spinal cord and almost terminate in ganglia that lie near the cord.This system is important during emergency situation and associated with fight or flight.This system accelerates the heart beat and dilates the pupil and inhibits the digestion of food etc.
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12th Class Biology Chapter 17 Short Questions Preparation - Set 7

Question # 1

Give effects of nicotine on blood vascular system and digestive system in man.

  • Ans 1: It increases the heart beat rate,blood pressure and digestive tract mobility Nicotine may induce vomiting and diarrhoea and even may cause water retention relation by kidneys.
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12th Class Biology Chapter 17 Short Questions

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