BW Circulatory & Nervous System 6-10

What is plasma primarily made of?

• A yellowish fluid

• Platelets

• Red blood cells

• White blood cells

How long does it take for blood to travel through the entire circulatory system?

• 5 minutes

• 30 seconds

• 1 minute

• 20 seconds

What does the nervous system control?

• Only the movement of limbs

• Everything you do

• Only involuntary actions

• Only voluntary actions

What are the two parts of the nervous system?

• The arteries and veins

• The central and peripheral nervous systems

• The heart and the brain

• The atrium and the ventricle

What protects the brain and spinal cord?

• Plasma

• Muscles

• Blood

• Bone