Body Coordination 7.2

Question 1

Nervous System

Answer 1

Communication network that controls all the other systems in the body

Question 2

Central Nervous System (CNS)

Answer 2

comprised of the brain and spinal cord. Receives and processes information before initiating a response

Question 4

Peripheral Nervous System (PNS)

Answer 4

branches out to the rest of the body and carries messages to/from the CNS.

Question 5

Dendrites

Answer 5

receive messages from other nerve cells

Question 6

Axon

Answer 6

sends nerve impulse away from cell body

Question 7

Axon terminals

Answer 7

pass the message on to the next neuron

Question 8

Schwann cells

Answer 8

produce the myelin sheath around neuronal axons

Question 9

myelin sheath

Answer 9

insulates the axon and allow the electrical impulses to travel quickly (just like the rubber around wires)

Question 10

Sensory neurons

Answer 10

carry messages from cells in sense organs (eyes, ears, tongue, skin) to the CNS.

Question 11

Relay connector neurons

Answer 11

transmit messages between neurons in the CNS

Question 12

Motor neurons

Answer 12

carry messages from the CNS to effectors e.g. muscles or glands that translate messages into actions

Question 13

action potential

Answer 13

neuron has been stimulated, a nerve impulse travels down the axon.

Question 14

neurotransmitters

Answer 14

released into the synapse (space between neurons) once the nerve impulse reaches the axon terminal

Question 15

Magnetic Resonance Imaging (MRI)

Answer 15

Where brains are imaged showing different types of tissues

Question 16

Functional Magnetic Resonance Imaging (fMRI)

Answer 16

indicates blood flow in the brain and can be used to diagnose stroke or disease.

Question 17

cerebrum

Answer 17

• Processes sensory information (senses),
• Complex thought processes
• Voluntary movement

Question 18

cerebellum

Answer 18

responsible for coordination and balance.

Question 19

medulla / brainstem

Answer 19

section connecting the brain to the spinal cord.

It is responsible for monitoring vital functions:
- breathing
- blood pressure
- heart rate

Question 20

cranium

Answer 20

The bones that form the head.

Question 21

cerebrospinal fluid (CSF)

Answer 21

help cushion brain and spinal cord from injury and provide nutrients.