7L2 Nervous System : Central vs. Peripheral

The Central Nervous System is made up of

• the cerebellum and cerebrum

• the brain and spinal cord

• the brainstem and spinal cord

• cerebrum and spinal cord

How does the body prevent damage to the fragile brain and spinal cord?

• the brain is kept floating in the skull so it can absorb impacts

• the brain and spinal cord are enclosed in bone (skull and spinal column) to protect it

• the spinal cord is kept safe by being hidden behind other body organs and muscles

• The brain isn't as protected as the spinal cord

PNS stands for

• Parallel Nervous System

• Peripheral Nervous System

• Physical Nervous System

• Pressure Nervous System

The Peripheral Nervous System is made up of

• the brain and spinal cord

• all of the neurons in the body

• the neurons outside of the brain and spinal cord

• the neurons in your arms and legs

What joins the two hemispheres of the brain together?

• corpus callosum

• cerebral cortex

• frontal lobe

• cerebellum

An impulse is travelling along an axon. It reaches a synapse, what happens next?

• The impulse jumps the gap to the dendrite of the next neuron and continues on its way

• Neurotransmitters are released into the synapse, which bind to the next neuron, generating an impulse in that neuron

• Dopamine is released into the synapse, which binds to the next neuron, generating an impulse in that neuron

• The impulse waits while the next neuron prepares itself to receive the signal

What type of Neuron send signals to the brain from a receptor?

• Motor

• Relay

• Sensory

• Inter neuron

What Neuron is used to send signals from your brain to your muscles?

• Relay

• Inter

• Motor

• Sensory

Which ions are involved in the electrical nerve impulse?

• Iodine and Sodium
• Potassium and Sodium
• Iron and Sodium
• Calcium and Iodine

Function of brain

• controls all voluntary actions of the body

• to transmit impulses from the sensory organ through central nervous system to the effector to respond accordingly

• controls the reflex actions