Bio c1

1. ...... is highly organized networks of cells that detects changes and controls metabolic processes, mental and physical activities and maintain homeostasis.

2. The nervous system is made up of ....

3. The ability of nervous system is to monitor and respond to changes in the
surrounding both external and internal.

4. The nervous tissue is composed of neurons and .....

5. .... are the working units of the nervous system that generate
and transmit nerve impulses.

6. The neuroglia do not conduct nerve impulse instead they support and protect the
nerve cells.

7. Neuron consists of three main regions:

8. Dendrites receive signals called impulses from the other neurones and conduct
the impulses to the cell body.

9. ..... carries the nerve impulse from the cell body to other neurons and
muscles.

10. Four types which are: an axonic, unipolar, bipolar, and multipolar.

11. ..... are neurons get information from the spinal
cord and convey or transmit commands to the effector organs such as muscles
or glands.

12. The relay neurons are found only in the brain and spinal cord connect one
neuron to another.

13. .... is an electrical charge travelling the length of neuron.

14. Resting potential is a non-conducting nerve fibre is described to be in a resting
potential.

15. .... is a localised change in the resting membrane potential b/w the
inside and outside of the nerve fibre caused by a stimulus.

16. A synapse is a junction b/w dendrites of two adjacent neurones.

17. How many divisions does the nervous system consist of?

18. How many neurons does human’s brain consist of?

19. The mass of the human adult is about ....

20. What is the food of brain cells?

21. The cerebrum is the longest and most complex parts of the brain and constitutes
about 90% of the brain's volume.

22. Parts of the brain stem are three, and they are: the midbrain, pons and medulla oblongata.

23. ..... is situated in front of the cerebellum, below the midbrain and above the
medulla oblongata.

24. ...... is the area of the brain situated b/w the cerebrum above and the
pons below.

25. The medulla oblongata is the most interior region of the brain stem.

26. it is situated behind the pons and immediately below the posterior
portion of the cerebrum.

27. The spinal cord is the elongated almost cylindrical part of the central nervous
system that is protected by the vertebral column and surrounded by the meninges and cerebrospinal fluid those also give the spinal cord a protection.

28. The peripheral nervous system consists of 2, and they are:

29. Cranial nerves are the nerves that arise from the brain and innervate areas in the head and face. Spinal nerves: are the nerves that rise from the spinal cord and.

30. The part that light first enters the eye is called the ...

31. Rods are more sensitive to light. Cones are sensitive to color.

32. .... is the portion of the central nervous system that is located within the
skull.