Available Answers

1. 1.

   Choose the most appropriate answer.

   1. The reaction of an organism to a stimulus is called a 
      1. response
      2. reflex
      3. shock
      4. none of these
   2. It nourishes the brain and absorbs shocks.
      1. cerebrospinal fluid
      2. skull
      3. pericardial fluid
      4. spinal cord
   3. The vertebral column protects the
      1. spinal cord
      2. cerebellum
      3. cerebrum
      4. liver
   4. It controls heartbeat, breathing and other involuntary movements.
      1. cerebellum
      2. cerebrum
      3. medulla
      4. none of these
   5. This is the uppermost part of the brain
      1. cerebellum
      2. cerebrum
      3. medulla
      4. none of these
2. 2.

   Fill in the blanks.

   1. Many short fibres called dendrons arise from the cell body and further divide to form _______________________
   2. A __________________ is a junction where communication between two neurons occurs.
   3. Nerve cells when joined end to end form a _____________________
   4. The ___________________ is the continuation of the medulla oblongata of the brain.
   5. ____________________ carry impulses from the brain and spinal cord to the muscles and glands.
3. 3.

   Define Sensory nerves.
4. 4.

   Define Mixed nerves.

5. 5.

   Define Synapse.
6. 6.

   Define Meninges.