Nervous System

Which best describes myelin?

• it is a neurotransmitter that triggers muscle contraction

• it is a protein that builds the axon

• it is a fatty covering that speeds the messages along the axon

• it is a fatty covering that helps the neuron "hear" messages

Why is your spinal cord important?

• Because it holds our spine together

• Because all communication travel through the spinal cord, towards and away from the brain.

• Because it interprets and controls our senses

• It speeds up the transmission of nerve impulses

The two parts of the Peripheral Nervous System

• Brain and Spinal Cord

• Somatic and Autonomic

• Systematic and Brain

• Spinal cord and Autonomic

The nervous system is divided into what two major parts

• brain and spinal cord

• central and somatic nervous systems

• sympathetic and parasympathetic systems.

• peripheral and central nervous systems

Which statement about the PNS (peripheral nervous system) is incorrect

• contains the brain and spinal cord

• contains all the nerves of the body

• is divided into the somatic and autonomic systems

• is divided into the sympathetic and parasympathetic divisions

The motor neuron is responsible for

• connecting to a muscle and helping you move

• connecting within the brain to help you make a decision

• sending a message toward your brain from a pain receptor in your skin

• all of these

The branch like figures that receive impulses & conducts them to the cell body

• Dendrite

• Axon

• Cell Body

• Myelin Sheath

How do your nerves work?

• They carry messages back and forth from the brain to the rest of the body

• The send messages only to the spinal cord

• They only receive messages from the spinal cord

• They really don't work. They are lazy and want everything done for them.

Which of the following cells protect the nervous system from infection

• microglial

• astrocyte

• oligodendrocyte

• ependymal cell

Which of the following is regulated by the autonomic nervous system

• Breathing

• Kicking a soccer ball

• Balancing on one foot

• Raising your hand