10th class Biology, Chapter 5: Coordination MCQs

1. Schwann cells are the supporting cells for neurons. They make:

1. (A) Cell body
2. (B) Axon
3. (C) Myelin sheath ✓
4. (D) Dendrites

2. Which part of the brain controls balance while riding a bicycle?

1. (A) Cerebrum
2. (B) Medulla
3. (C) Cerebellum ✓
4. (D) Spinal cord

3. Which part is responsible for sensations of temperature, hunger, thirst, and sleep?

1. (A) Hypothalamus ✓
2. (B) Thalamus
3. (C) Pons
4. (D) Cerebellum

4. If a patient cannot remember things, which part of their brain may be affected?

1. (A) Cerebrum ✓
2. (B) Cerebellum
3. (C) Medulla
4. (D) Spinal cord

5. During danger, which system activates quickly?

1. (A) Parasympathetic
2. (B) Skeletal
3. (C) Endocrine
4. (D) Sympathetic ✓

6. Why are reflex actions faster than normal actions?

1. (A) Brain processes them quickly
2. (B) Brain is not involved ✓
3. (C) Signals move slower
4. (D) They need thinking

7. Which of these acts as exocrine as well as endocrine gland?

1. (A) Pituitary
2. (B) Thyroid
3. (C) Adrenal
4. (D) Pancreas ✓

8. The chemical messengers of the endocrine system are called:

1. (A) Neurotransmitters
2. (B) Hormones ✓
3. (C) Neurons
4. (D) Enzymes

9. What could happen if hormone of parathyroid gland were missing?

1. (A) Low calcium levels ✓
2. (B) High blood sugar
3. (C) Weak muscles
4. (D) Poor digestion

10. Which endocrine gland prepares the body for "fight or flight" response?

1. (A) Thyroid
2. (B) Pituitary
3. (C) Adrenal ✓
4. (D) Pancreas

11. The function of glucagon is to:

1. (A) stimulate release of glucose from liver ✓
2. (B) accelerate protein synthesis within cells
3. (C) decrease release of glucose from liver
4. (D) slow down glucose formation from lactic acid

12. In nervous coordination, the coordinators are the:

1. (A) muscles and glands
2. (B) endocrine glands
3. (C) receptors
4. (D) brain and spinal cord ✓

13. In nervous coordination, the effectors are:

1. (A) brain and spinal cord
2. (B) ears and eyes
3. (C) neurons
4. (D) muscles and glands ✓

14. A wave of electrochemical change that travels across the membrane of a neuron is a:

1. (A) nerve impulse ✓
2. (B) hormone
3. (C) synapse
4. (D) reflex

15. The small gaps in the myelin sheath are called:

1. (A) nodes of Ranvier ✓
2. (B) synapses
3. (C) ganglia
4. (D) dendrites

16. Which of the following is a neurotransmitter?

1. (A) Acetylcholine ✓
2. (B) Insulin
3. (C) Thyroxin
4. (D) Haemoglobin

17. Groups of cell bodies of neurons enveloped by membranes are called:

1. (A) ganglia ✓
2. (B) nerves
3. (C) synapses
4. (D) meninges

18. Nerves that contain the axons of both sensory and motor neurons are:

1. (A) mixed nerves ✓
2. (B) sensory nerves
3. (C) motor nerves
4. (D) cranial nerves only

19. The three layers of membranes that cover the brain are collectively called:

1. (A) cranium
2. (B) meninges ✓
3. (C) pleura
4. (D) pericardium

20. The average adult human brain weighs about:

1. (A) 1.4 kg ✓
2. (B) 0.5 kg
3. (C) 3 kg
4. (D) 5 kg