Section I: Multiple Choice Questions
Select the correct answer:
1. Reaction to any stimulus is called:
- A) receptor
- B) impulse
- C) responses
- D) effector
2. The unit of structure and function in the nervous system is:
- A) neuron
- B) muscle cell
- C) nephron
- D) cardiac cell
3. Thyroid gland has the ability to store:
- A) iodine
- B) chlorine
- C) fluorine
- D) zinc
4. Endocrine glands pour their secretion directly into:
- A) lymph
- B) blood
- C) organs
- D) muscles
5. Islet of Langerhans are parts of the:
- A) thyroid gland
- B) adrenal gland
- C) pancreas
- D) gonads
6. Nerve impulse is best described as:
- A) chemical
- B) electrical
- C) osmotic
- D) electrochemical
7. When a person is frightened, which substance increases the blood sugar level?
- A) adrenaline
- B) amylase
- C) glycogen
- D) insulin
8. Which part of the brain detects temperature changes in the blood?
- A) cerebellum
- B) cerebral hemispheres
- C) hypothalamus
- D) medulla
10. In contrast to nerve ls, the response produced by hormones takes longer because:
- A) hormones are specific in their action,
- B) hormones are transported through blood.
- C) hormones are produced in small amounts.
- D) the molecules of hormones are small in size.
11. Once released, neurotransmitter molecules typically produce signals in postsynaptic neurons by
- A) entering the postsynaptic neuron
- B) attaching to vesicles
- C) binding to presynaptic receptors
- D) binding to postsynaptic receptors
12. The parts of brain represented by I and II are:
Diagram image pending upload by Admin.
| I | II | |
| A) | cerebellum | pons |
| B) | cerebrum | pons |
| C) | cerebellum | medulla oblongata |
| D) | cerebrum | medulla oblongata |
13. The diagram shows Reflex arc.
Diagram image pending upload by Admin.
The components of this reflex arc are:
| 1 | 2 | 3 | 4 | 5 | |
| A) | Receptor | Sensory neuron | Motor neuron | Interneuron | Effector |
| B) | Sensory neuron | Motor neuron | Interneuron | Receptor | Effector |
| C) | Receptor | Effector | Sensory neuron | Interneuron | Motor neuron |
| D) | Receptor | Sensory neuron | Interneuron | Motor neuron | Effector |
14. Four characters of a specific hormone are listed below i. Increased rate and intensity of heartbeat ii. Increased blood pressure iii. Decreased blood flow to skin & alimentary canal iv. Increased blood flow to limb Which is this hormone?
- A) adrenaline
- B) glucagon
- C) insulin
- D) testosterone
Section II: Short Answer Questions
1. What is nervous system?
2. What is the role of nervous system?
3. Differentiate between central nervous system and peripheral nervous system.
4. Name the parts of human brain.
5. Write two functions of cerebellum.