The Nervous System

Question 1

What is the nervous system?

Answer 1

Consists of the central nervous system and the peripheral nervous system

Question 2

What is the central nervous system?

Answer 2

Made of brain and the spinal cord, where all complex commands and decisions made. It passes messages to and from the brain and connects nerves to the PNS

Question 3

What is the brain?

Answer 3

Centre of all conscious awareness, divided into two hemispheres

Question 4

What is the spinal cord?

Answer 4

An extension of the brain and it is responsible for reflex actions

Question 5

What is the peripheral nervous system?

Answer 5

Sends information to the CNS from the outside world and transmits messages from the CNS to muscles and glands in the body via neurons and is divided into the ANS and SNS

Question 6

What is the peripheral nervous system?

Answer 6

Sends information to the CNS from the outside world and transmits messages from the CNS to muscles and glands in the body via neurons and is divided into the ANS and SNS

Question 7

What is the somatic nervous system?

Answer 7

• Transmits information from receptor cells in the sense organs to the CNS
• Receives information from the CNS that direct muscles to contract
• Controls muscle movement and receives information from sensory receptors

Question 8

What is the autonomic nervous system?

Answer 8

• Transmits information to and from internal bodily organs
• Operates involuntarily
• 2 main divisions: sympathetic and parasympathetic nervous systems
• Governs vital functions of the body

Question 9

What is the parasympathetic nervous system?

Answer 9

Controls the relaxed state (rest and digest), conserving resources and promoting digestion and metabolism (slows down organs)

Question 10

What is the sympathetic nervous system?

Answer 10

Activates internal organs for vigorous activities and emergencies (speeds organs up)