Nervous System By Alexandra Jones
Major Functions of the
Nervous System
Collects sensory input from the body and external environment.
Processes and interprets the sensory input.
Respond appropriately to the sensory input.
Major Divisions and Subdivisions of the Nervous System
Subdivisions
The Central Nervous System (CNS)
Peripheral Nervous System (PNS)
Brain
Spinal Cord
Autonomic NS
Somatic NS
Major Parts of the Brain and Their Functions.
Cerebrum
Brainstem
Cerebellum
Receives information from sensory system, spinal cord, and other parts of the brain which gives motor media.
Interpreting touch, vision and hearing, as well as speech, reasoning, emotions, learning, and fine control of movement.
Flow of messages between the brain and the rest of the body
Names of all the Lobes and Their Functions
Parietal
Temporal
Frontal
Occipital
The visual processing area of the brain.
Process sensory information and derive it into meaningful memories, language, and emotions
Processing sensory information regarding the location of parts of the body as well as interpreting visual information and processing language and mathematics
Controls important cognitive skills in humans, such as emotional expression, problem solving, memory, language, judgment, and sexual behaviors.
The Layers of the Meninges
Arachnoid Mater
Pia Mater
Dura Mater
The outermost layer of the brain and spinal cord.
The second layer which helps protect it for any harm.
The innermost layer which is very delicate and involves into the brain and spinal cord.
Spaces &
Ventricles
Lateral Ventricles
Interventricular Foramen
Third Ventricles
Forth Ventricle
Central Canal
Cerebral Aqueduct
Tissues (structure & function of a neuron)
Cell body (Soma) -
Carries out the cell functions
Axon - Send signal away from the soma
Dendrites -Receives the info
Schwann cell - Makes the Myelin
Myelin sheath - Speeds up electrical signal
Neurolemma - Nucleus inside the cytoplasm
Node of Ranvier - Space between 2 Schwann cells for electrical signal (communication)
Axon terminal- Holds and releases neurotransmitters
Synapse - Communication between two neurons
Classification of neurons
Bipolar Neuron- Have 2 processes separate by the cell body.
Psuedounipolar Nueron - single elongate process with the cell body situates to one side.
Anaxonic Nueron - axons can't be distinguished from dendrites.
Multipolar Nueron - have more than two processes; there is a single axon and multiple dendrites
Major parts and
functions of the spinal cord
Central Canal - Protects neurons with CSF
Ventral Root - Carrie's information from the brain out the body
Dorsal Root - Sends information up to the brain for analysis
Spinal Nerve - Mixed nerves that carry information to the brain
Dorsal Root Ganglion - Afferents; relays information to the brain and spinal cord
White Matter - Carries information up and down the spinal cord.
Gray Matter - Receives and integrates incoming and outgoing information
Anterior Horns - Sends motor signals to spinal cord
Posterior Horns - Receives sensory information from somatic nerves
Action potential - The change in electrical potential potential associated with the passage of an impulse along the membrane of a muscle cell or nerve cell.
Drugs that affect the brain
ALCOHOL
METHAMPHETAMINE
COCAINE
MARIJUANA
LSD
ECSTASY
HERION
This drug interferes with the serotonin, Neuromtransmitters, Receptors Type 1, and Type 2.
This drug interferes with the Dopamine Neurotransmitter, Dopamine Transmitters , and Dopamime Receptors
This drug interferes with the GABA inhibitory Neurotransmitters, GABA receptors, Glutamate Receptors, and Nuertransmitters.
This drug interferes with the Dopamine Transmitters, Dopamine Neurotransmitters, and Dopamine receptors.
This drug interferes with the Inhibitory Neurotransmitter, Dopamine Neurotransmitters, Canabinoid Receptors, and Dopamine Receptors
This drug interferes with the Serotonin Neurotransmitter, Serotonin Receptor, and Serotonin Transmitters
This drug interferes with the Oplate Receptor, Inhibotory Neurotransmitter, Dopamine transmitters , Dopamine Receptors.