Nervous System

Question 1

State the Five Components of the Reflex Arc

Answer 1

1. Receptor
2. Sensory Neurons
3. Integration Centre
4. Motor Neuron
5. Effector

Question 2

Define Receptor

Answer 2

• Detects a stimulus
• e.g., pain, heat and stretch.

Question 3

Define Sensory Neuron

Answer 3

• “Afferent”
• Carries the signal from the receptor to the spinal cord or brain.

Question 4

Define Integration Centre

Answer 4

• Processes the information in the central nervous system, usually the spinal cord.
• May involve interneurons.

Question 5

Define Motor Neuron

Answer 5

Transmits the response signal from the integration centre to the effector.

Question 6

Define Effector

Answer 6

• Muscle or gland that carries out the response.
• e.g., contraction or secretion.

Question 7

What are the 5 Neuroglial Cells of the Nervous System?

Answer 7

1. Astrocytes
2. Microglia
3. Oligodendrocytes
4. Ependymal Cells
5. Schwenn Cells

Question 8

Name the Three Meninges of the Brain and Spinal Cord

Answer 8

1. Dura Mater
2. Arachnoid Thater
3. Pia Mater

Question 9

Name Any Three Neurotransmitter in the Human Body

Answer 9

• Acetylcholine
• Dopamine
• Serotonin