2nd Year Biology Chapter 5 Test05. Nervous System of Man

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

1. In the reflex arc, effectors are usually:
   1. Dendrites
   2. Sensory receptors
   3. Muscles or glands
   4. Axons
2. A receptor cell that converts one form of energy into another is called:
   1. Transmitter
   2. Transducer
   3. Effector
   4. Stimulus
3. Opioids relieve pain by binding to:
   1. Dopamine receptors
   2. Muscle receptors
   3. Opioid receptors
   4. Sodium channels
4. Sodium–potassium pump transports ions in the ratio of:
   1. 3 Na⁺ out : 2 K⁺ in
   2. 2 Na⁺ out : 3 K⁺ in
   3. 1 Na⁺ out : 1 K⁺ in
   4. 2 Na⁺ out : 2 K⁺ in
5. The part of a neuron that contains cytoplasm, nucleus, and organelles is:
   1. Dendrite
   2. Axon
   3. Cell body
   4. Schwann cell
6. The machine used in CT scanning has:
   1. Rotating X-ray source and detectors
   2. Magnetic waves only
   3. Electrodes on scalp
   4. Ultrasound probe
7. Which one of the following controls involuntary activities such as coughing and sneezing?
   1. medulla
   2. cerebrum
   3. cerebellum
   4. ponscerebellum
8. Which drug acts as a depressant and slows down nervous communication?
   1. Nicotine
   2. Alcohol
   3. Cannabis
   4. Caffeine
9. Pain receptors in the skin are technically called:
   1. Mechanoreceptors
   2. Thermoreceptors
   3. Nociceptors
   4. Photoreceptors
10. Neurons that carry information from receptors to the CNS are called:
    1. Motor neurons
    2. Interneurons
    3. Sensory neurons
    4. Relay neurons