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1. The basic functional unit of the neural system is:
1. Dendrite
2. Axon
3. Neuron
4. Synapse

2. Which of these correctly describes a neuron's resting membrane?
1. Inner surface positive, outer surface negative
2. Inner surface negative, outer surface positive 
3. Both surfaces equally charged
4. No charge difference across membrane

3. The gap between two adjacent myelin sheaths is called:
1. Synaptic cleft
2. Synaptic knob
3. Node of Ranvier
4. Schwann cell junction

4. During nerve impulse transmission, depolarization occurs due to:
1. \(K^+\) ions flowing out
2. \(Na^+\) ions flowing in
3. Both ions flowing simultaneously 
4. No ion movement

5. The outer covering of the brain is called:
1. Pia mater
2. Dura mater
3. Arachnoid
4. Meninges

6. Chemical synapses differ from electrical synapses in:

1.	Speed of transmission
2.	Presence of synaptic cleft
3.	Need for neurotransmitters
4.	All of the above

7. The region of brain responsible for maintaining body balance is:
1. Cerebrum
2. Cerebellum
3. Pons
4. Medulla

8. Which type of neuron has one axon and two or more dendrites?
1. Unipolar
2. Bipolar
3. Multipolar
4. Monopolar

9. The corpus callosum connects:
1. Right and left cerebral hemispheres
2. Cerebrum and cerebellum
3. Midbrain and hindbrain
4. Thalamus and hypothalamus

10. Neurotransmitters are stored in:

1.	Dendrites	2.	Cell body
3.	Synaptic vesicles	4.	Axon membrane

11. The grey matter of cerebral cortex appears grey due to:

1.	Presence of blood vessels
2.	Concentration of nerve cell bodies
3.	Myelin sheaths
4.	Connective tissue

12. Which of the following correctly describes the resting neural membrane?
1. \(Na^+\) concentration is higher inside than outside
2. \(K^+\) concentration is lower inside than outside 
3. \(K^+\) concentration is higher inside than outside
4. Both \(Na^+\) and \(K^+\) concentrations are equal on both sides

13. The transmission of nerve impulse across a chemical synapse involves:

1.	Direct flow of electrical current
2.	Release of neurotransmitters from synaptic vesicles
3.	Gap junctions between neurons
4.	Immediate electrical connection between neurons

14. Nodes of Ranvier are:

1.	Gaps between adjacent Schwann cells in unmyelinated neurons
2.	Gaps between adjacent myelin sheaths in myelinated neurons
3.	Junctions between dendrites and axons
4.	Points where axons branch

15. The autonomic neural system is responsible for:

1.	Voluntary muscle movements
2.	Conscious thought processes
3.	Control of involuntary organs and smooth muscles
4.	Sensory perception

16. Which part of the brain is responsible for maintaining body temperature and hunger control?
1. Cerebrum
2. Cerebellum
3. Hypothalamus
4. Medulla oblongata

17. The grey matter in the cerebral cortex appears grey because it contains:
1. Myelinated axons
2. Neuron cell bodies
3. Synaptic vesicles
4. Glial cells

18. During the generation of action potential, which of the following occurs first?
1. \(K^+\) flows out of the neuron
2. \(Na^+\) flows into the neuron
3. The membrane repolarizes
4. The membrane becomes impermeable to all ions

19. The corpus callosum is:
1. A protective covering of the brain
2. A tract connecting the two cerebral hemispheres
3. Part of the limbic system
4. The outer layer of the cerebrum

20. Which of these is NOT a function of the medulla oblongata?
1. Control of respiration
2. Control of cardiovascular reflexes
3. Control of gastric secretions
4. Control of body temperature

21. The limbic system is involved in:
1. Motor coordination only
2. Sensory processing only
3. Emotional reactions and motivation
4. Maintaining blood pressure

22. A bipolar neuron has:
1. Multiple dendrites and one axon
2. One dendrite and one axon
3. One axon only
4. Multiple axons and one dendrite

23. The sodium-potassium pump in a resting neuron:
1. Pumps \(2~ Na^+\) out for \(3~ K^+\) in
2. Pumps \(3 ~Na^+\) out for \(2~ K^+\) in
3. Pumps equal amounts of \(Na^+\) and \(K^+ \)
4. Only pumps \(Na^+\) out of the cell

24. The cerebral aqueduct is located in the:
1. Forebrain
2. Midbrain
3. Hindbrain
4. Spinal cord

25. Electrical synapses are characterized by:
1. Presence of neurotransmitters
2. Direct flow of current between neurons
3. Wide synaptic cleft
4. Slower transmission than chemical synapses

26. The brain stem consists of:
1. Cerebrum, cerebellum and pons
2. Midbrain, pons and medulla oblongata
3. Thalamus, hypothalamus and midbrain
4. Medulla, pons and cerebellum