Name: ______________________________________
Date: ______________
Teacher: ____________________________________
Section: ____________
The Nervous System
LG: ____________________________________________________________________________________________
Regulation-any activity that helps the body maintain ______________________________. –Controls and
____________________________ life ____________________________. Includes ___________________________&
_______________________________ systems. Nervous System- system of specialized cells to _____________________
______________________ throughout the body. Impulses are sent by ____________________to and from the CNS
(_____________________________________________). Main Organs 1-Brain 2-Spinal Cord. Stimuli  Receptors  Responses:
Stimuli= anything (internal/external) that causes _____________________. Ex: ________________________
Receptors= Structures on the ___________________________ that detect __________________________. Ex:
_____________________________________. Shapes matters! Enzymes are very specific and only work with
_________________________________________________________.
Neurons: Specialized cells that carry _____________________________________ impulses. You are born with most of the neurons
________________________________. They are not replaced when they die!!
Neuron Structure: 3 Main Parts-1)Cell Body (_________________) Contains nucleus and _____________________. Metabolism
such as ________________________________________. 2)Dendrites: Short branch extensions receives
_______________________ from other _________________ or _______________________. Send them ____________________
the cell body. 3) Axon: Long fiber sends impulses __________________ from the cell body to
__________________________________. Myelin Sheaths- insulating layers form ______________________________ Function:
Allow impulses to ______________________________. Schwann Cells-________________________________
Node of Ranvier (__________)Gaps between adjacent Schwann cells. Function: Allow nerve impulses to move along the
_____________________ efficiently.
Types of Neurons
1)Sensory or Afferent Neuron (Organs  _____________) Moving away from a central organ or point.
__________________________________ from receptors to the brain or _______________________________. 2) Motor or Efferent
Neuron(Brain  muscle) Moving toward a _____________________________or point. Relays messages from the
________________________________ to the ______________________________________. 3)Interneuron: Relay message from
______________________________ to motor neuron. Make up ____________________________________________.
Neuron Communication- Synapse: the space between __________________________. One end of a neuron secretes
________________________________________________that travel across this space thus carrying ________________ from cell to
cell. Neurotransmitters (NTs)- Chemical ___________________________________
The process represented in the diagram best illustrates
(1) cellular communication
(2) muscle contraction
(3) extraction of energy from nutrients
(4) waste disposal
Drugs & Poisons
Stimulants-Speed up __________________________and __________________ of ___________________________
Caffeine-increases ____________________________________________________. Causes _____________________ and
_________________________________. Depressants-Block formation of _____________________________. Barbiturates produce
____________________________________. Ex: _______________________________________
Brain has 2 Hemispheres-Each side of the brain is _______________________________. Each hemisphere contains 4 different
___________________.
Frontal Lobe Functions & Actions-Memory formation, ____________________, decision making/reasoning,
_________________________. Critical Regions of the F.L.-Primary Motor Cortex (_______________________________)-involved
with controlling ___________________________ of the body. Broca’s Area- Controls facial neurons, ________________ and
___________________ comprehension. Located on ________ ______________________________. Olfactory Bulb
(___________________)-Cranial Nerve 1, responsible for __________________________________. Parietal Lobe FunctionsSenses, spatial awareness and perception. Primary Gustatory Cortex=the sensation of _____________. Occipital Lobe- The
processing, ________________________, interpretation of vision and ________________________________. Temporal Lobehearing, language comprehension, memory ___________________/_____________________. Cortical Regions: Primary Auditory
Cortex-responsible for ____________________________. Primary Olfactory Cortex-interprets the
__________________________________ once it reaches the ________________ via the
___________________________________________. Wernicke’s Area-Language comprehension. Located
__________________________________.
Meningitis-Viral or bacterial disease that infects fluid surrounding brain and spinal cord. Symptoms__________________________________________________________________________________________________
Cerebral Palsy
Causes
Treatment