CH 4 Nervous System

Question 1

Organization of the Nervous system + Neurons in the body (10)

Answer 1

Nervous system

1. Central Nervous system (CNS)

Made of Brain & Spinal Cord

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2. Peripheral Nervous system (PNS)

Made of Somatic Nervous System and Autonomic Nervous System

• Both systems are comprised of Afferent Nerves and Efferent Nerves
• Efferent nerves in ANS comprise of the ** Parasympathetic Nervous System** and Sympathetic Nervous System

Question 2

Central Nervous System (CNS)

Answer 2

Part of nervous system containing the brain and spinal cord that controls the mind and behaviour

Question 3

Peripheral Nervous System (PNS)

Answer 3

Nerves in the body outside pf the CNS

Question 4

Somatic Nervous System

Answer 4

Controls skeletal muscles and voluntary body movement

Question 5

Autonomic Nervous System

Answer 5

Regulates body autonomous processes: glands, blood vessels, internal organs

Question 6

Efferent Nerves

Answer 6

(Outbound) Nerve fibres that carry signals away from the central nervous system (CNS) to muscles, glands, and other organs

Question 7

Afferent Nerves

Answer 7

(Inbound) Bringing sensory information from the outside world into the brain

Question 8

Sympathetic Nervous System

Answer 8

Action, energy output, fight or flight

Question 9

Parasympathetic Nervous System

Answer 9

(Homeostasis) Conserve energy, quiet state

Question 10

Spinal Reflex

Answer 10

An automatic response to a sensory stimulus that involves the spinal cord.

• Simplest form of motor control
• Don’t require conscious input to function