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NEET UG Neural Control and Coordination — practice questions

Explore 48 free Neural Control and 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 Coordination questions and exercises with answers

Showing questions 1–30 of 48.

In Hydra, the neural system is composed ofRead the answer and worked solution →Unipolar neurons, with a cell body and one axon only, are usually foundRead the answer and worked solution →In spinal and cranial nerves, the myelin sheath around axons is formed byRead the answer and worked solution →At rest, the axoplasm inside an axon containsRead the answer and worked solution →In each cycle, the sodium-potassium pump of an axon movesRead the answer and worked solution →When a stimulus is applied, the polarised membrane becomes freely permeable toRead the answer and worked solution →Right after rapid Na+ influx at a stimulated site, the outer membrane surface becomesRead the answer and worked solution →What restores the resting potential after Na+ entry at an excited site?Read the answer and worked solution →At an electrical synapse, the pre- and post-synaptic membranes areRead the answer and worked solution →Impulse transmission is always faster across which junction?Read the answer and worked solution →In the human neural system, electrical synapses areRead the answer and worked solution →Released neurotransmitters bind to specific receptors located on theRead the answer and worked solution →Association areas of the cerebral cortex are responsible forRead the answer and worked solution →The amygdala and hippocampus are part of theRead the answer and worked solution →Along with the hypothalamus, the limbic system regulatesRead the answer and worked solution →The midbrain lies between the forebrain's thalamus and the hindbrain'sRead the answer and worked solution →The canal that passes through the midbrain is theRead the answer and worked solution →Which brain region receives and integrates visual, tactile and auditory inputs?Read the answer and worked solution →At the axon hillock of a typical neuron, the resting potential is aroundRead the answer and worked solution →Under the all-or-none principle, a stronger stimulus above threshold gives an action potential that isRead the answer and worked solution →Stimulus intensity in a neuron is reflected mainly by the action potential'sRead the answer and worked solution →The absolute refractory period arises because sodium channels areRead the answer and worked solution →During the relative refractory period, a new action potentialRead the answer and worked solution →The one-way travel of an action potential along an axon is largely due to theRead the answer and worked solution →The jumping of an action potential from node to node is calledRead the answer and worked solution →In the central nervous system, myelin is produced byRead the answer and worked solution →Which disease breaks down myelin and impairs coordinated movement?Read the answer and worked solution →The mean conduction velocity of action potentials ranges from aboutRead the answer and worked solution →Who accurately modelled the voltages and currents of the action potential in 1952?Read the answer and worked solution →Which cells give a classic example of pacemaker potentials?Read the answer and worked solution →

Worked practice questions

In Hydra, the neural system is composed of

  1. A network of neurons
  2. A dorsal nerve cord
  3. A ventral nerve cord
  4. A brain and ganglia
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Correct answer: A. A network of neurons

Hydra has a very simple neural organisation made of a diffuse network of neurons with no brain.

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Unipolar neurons, with a cell body and one axon only, are usually found

  1. In the corpus callosum
  2. In the embryonic stage
  3. In the adult retina
  4. In the cerebral cortex
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Correct answer: B. In the embryonic stage

Neurons with only one axon and no dendrites are typical of the embryonic stage.

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In spinal and cranial nerves, the myelin sheath around axons is formed by

  1. Astrocyte cells
  2. Microglial cells
  3. Schwann cells
  4. Oligodendrocytes
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Correct answer: C. Schwann cells

In peripheral nerves, Schwann cells wrap the axon to form its myelin sheath.

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