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NEET UG Neural Control and Chemical Coordination — practice questions — page 3

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 61–90 of 141.

When the membrane's polarity flips at a stimulated site, it is said to be:Read the answer and worked solution →Junctions through which an impulse passes from one neuron to the next are:Read the answer and worked solution →Which type of synapse is faster but rare in humans?Read the answer and worked solution →The brain is protected inside the skull by three membranes called:Read the answer and worked solution →The two cerebral hemispheres are joined by a fibre tract called the:Read the answer and worked solution →The cerebral cortex looks grey because it is packed with:Read the answer and worked solution →Your body temperature and the urge to eat and drink are set by the:Read the answer and worked solution →The four round swellings on the dorsal midbrain are the:Read the answer and worked solution →Breathing, cardiovascular reflexes and gastric secretion are controlled by the:Read the answer and worked solution →Pulling your hand off a hot pan without thinking is a:Read the answer and worked solution →In a reflex arc the afferent neuron enters the spinal cord through the:Read the answer and worked solution →Smell receptors in the nose are called:Read the answer and worked solution →Catch the forebrain partsRead the answer and worked solution →Pop the neuron partsRead the answer and worked solution →Steer into the neural laneRead the answer and worked solution →Slice the brain wordsRead the answer and worked solution →Forebrain or hindbrainRead the answer and worked solution →Which brain part does itRead the answer and worked solution →One word is wrongRead the answer and worked solution →Neural bingoRead the answer and worked solution →What are the secretions of ductless glands called?Read the answer and worked solution →The hypothalamus is the basal part of which brain region?Read the answer and worked solution →GnRH from the hypothalamus stimulates the pituitary to release which hormones?Read the answer and worked solution →Hypothalamic somatostatin inhibits the release of which pituitary hormone?Read the answer and worked solution →How do hypothalamic hormones reach the anterior pituitary?Read the answer and worked solution →The adenohypophysis consists of which two portions?Read the answer and worked solution →The pars intermedia of the pituitary secretes which single hormone?Read the answer and worked solution →Oxytocin and vasopressin are actually synthesised in which structure?Read the answer and worked solution →What is the main role of prolactin?Read the answer and worked solution →ACTH stimulates the synthesis and secretion of which hormones?Read the answer and worked solution →

Worked practice questions

When the membrane's polarity flips at a stimulated site, it is said to be:

  1. Depolarised
  2. Polarised
  3. Myelinated
  4. Inhibited
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Correct answer: A. Depolarised

1. Sodium rushes in at the stimulated site. 2. Inside turns positive and outside negative. 3. The site is depolarised. _Source: syllabus Biology, Chapter 21, Neural Control and Coordination._

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Junctions through which an impulse passes from one neuron to the next are:

  1. The meninges
  2. The synapses
  3. The nodes
  4. The ganglia
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Correct answer: B. The synapses

1. Neurons do not touch end to end. 2. A special junction links them. 3. It is the synapse. _Source: syllabus Biology, Chapter 21, Neural Control and Coordination._

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Which type of synapse is faster but rare in humans?

  1. Hormonal
  2. Mechanical
  3. Electrical
  4. Chemical
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Correct answer: C. Electrical

1. Current flows directly across an electrical synapse. 2. That makes it faster than a chemical one. 3. But electrical synapses are rare in our body. _Source: syllabus Biology, Chapter 21, Neural Control and Coordination._

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