2nd Year Biology Chapter 3 TestHUMAN NERVOUS SYSTEM

Q1. Multiple choice questions (Attempt all · 10 × 1 = 10)

1. Which parts of a neuron receive information from other cells and carry impulses toward the cell body?

   1. Dendrites

   2. Axons

   3. Axon terminals

   4. Nodes of Ranvier

2. The cytoplasm of a neuron's cell body is characterized by the presence of Nissl's granules, which are groups of:

   1. Mitochondria and Golgi bodies

   2. Ribosomes and rough endoplasmic reticulum

   3. Lysosomes and vacuoles

   4. Centrioles and smooth endoplasmic reticulum

3. The pineal gland is located where the two halves of the thalamus join and produces which hormone to control sleep patterns?

   1. Melatonin

   2. Oxytocin

   3. Thyroxine

   4. Adrenaline

4. Which division of the nervous system controls voluntary skeletal muscles?

   1. Autonomic nervous system

   2. Parasympathetic nervous system

   3. Somatic nervous system

   4. Sympathetic nervous system

5. Which root of a spinal nerve contains the axons and dendrites of sensory neurons?

   1. Ventral root

   2. Somatic root

   3. Dorsal root

   4. Autonomic root

6. A nerve impulse is defined as a wave of:

   1. Purely chemical changes

   2. Electrochemical changes

   3. Mechanical vibrations

   4. Magnetic fluctuations

7. Where is the third ventricle of the brain located?

   1. In the cerebrum

   2. Between the cerebellum and the brainstem

   3. Inside the spinal cord

   4. In the diencephalon, between the right and left thalamus

8. The electrical charge difference across a cell membrane is known as:

   1. Kinetic potential

   2. Action threshold

   3. Membrane potential

   4. Metabolic capacity

9. Which neurotransmitter is released by presynaptic neurons in the brain to produce feelings of pleasure and reward?

   1. Adrenaline

   2. Dopamine

   3. Acetylcholine

   4. Melatonin

10. Which of the following is a narcotic drug used for pain relief?

    1. Caffeine

    2. Morphine

    3. Alcohol

    4. Nicotine