1.  What are the three types of muscle?  Which two muscle types are involuntary?  Which is voluntary?

3.  Receives information about what is going on inside and outside of your body  Processes the information and forms a response Receive information Process information Form a response

4.  A neuron is a cell that carries messages, or impulses, from one part of the body to another  Types of neurons ◦ Sensory neuron: gathers information from external and internal environment ◦ Interneuron: located in the brain and spinal cord; pass impulses from one neuron to another ◦ Motor neurons: send nerve impulses to muscles and glands

6.  Dendrites carry nerve impulses toward a neuron’s cell body  The cell body controls the cell’s basic functions

7.  Impulses travel along axons to other cells  Some axons are covered by a myelin sheath that increases the speed of an impulse

8. Cerebrum: makes up 85% of the brain’s weight; controls movement, memory, communication, and reasoning Brain Stem: lies between the cerebrum and spinal cord; consists of the midbrain, pons, and medulla; controls involuntary actions Cerebellum: coordinates body’s movements and helps keep balance

9.  The spinal cord is a thick column of nerve tissue  Links the brain to most of the nerves in the peripheral nervous system  Nerve impulses travel from the brain, through the spinal cord, and out to the rest of the body

10.  Includes the network of nerves that links the rest of your body to your brain and spinal cord ◦ Sensory Division: Carries information about the outside environment from your ears, eyes, and other sense organs ◦ Motor Division: Carries the responses back to your muscles and glands  SNS - Somatic Nervous System: control voluntary actions; skeletal muscles  ANS – Autonomic Nervous System: regulate actions that happen automatically

11.  Concussion: a bruise-like injury in which the brain tissue hits the skull ◦ Lose consciousness, vomit, feel drowsy or confused, a severe nose bleed  Coma: a prolonged period of deep unconsciousness  Paralysis: the loss of the ability to move and feel a part of the body

12.  Anatomy of the Spinal Cord and How it Works Anatomy of the Spinal Cord and How it Works