Chapter 18 Solutions — Neural Control and Coordination

Exercises

1. 1.
   Briefly describe the structure of the Brain.
2. 2.
   Compare the following:

   • (a) Central neural system (CNS) and Peripheral neural system (PNS)
   • (b) Resting potential and action potential
3. 3.
   Explain the following processes:

   • (a) Polarisation of the membrane of a nerve fibre
   • (b) Depolarisation of the membrane of a nerve fibre
   • (c) Transmission of a nerve impulse across a chemical synapse
4. 4.
   Draw labelled diagrams of the following:

   • (a) Neuron
   • (b) Brain
5. 5.
   Write short notes on the following:

   • (a) Neural coordination
   • (b) Forebrain
   • (c) Midbrain
   • (d) Hindbrain
   • (e) Synapse
6. 6.
   Give a brief account of Mechanism of synaptic transmission.
7. 7.
   Explain the role of Na+ in the generation of action potential.
8. 8.
   Differentiate between:

   • (a) Myelinated and non-myelinated axons
   • (b) Dendrites and axons
   • (c) Thalamus and Hypothalamus
   • (d) Cerebrum and Cerebellum
9. 9.
   Answer the following:

   • (a) Which part of the human brain is the most developed?
   • (b) Which part of our central neural system acts as a master clock?
10. 10.
    Distinguish between:

    • (a) afferent neurons and efferent neurons
    • (b) impulse conduction in a myelinated nerve fibre and unmyelinated nerve fibre
    • (c) cranial nerves and spinal nerves