|What nerve pairs make up the peripheral nervous system?
|What are the two subdivisions of the autonomic nervous system?
|How many pairs of spinal nerves are there?
|How many pairs of cranial nerves are there?
|Efferent nerves are also known as...
|Innermost layer of the brain
|What produces the Cerebrospinal fluid?
|Junction between two nerve cells
|What does the axonal terminal do?
|What does the dendrite do?
|Conducts electrical currents toward the body
|What is does the myelin sheath help with?
|Increase the speed of impulse transmission
|What does the axon do?
|Conducts impulses away from the cell body
|What is the difference between neurotransmitters and impulses?
|Impulses are electrical and neurotransmitters are chemical
|Terminals__ information while dendrites __ information
|Terminals send information while dendrites receive information
|What are other functions of the Cerebrospinal fluid?
|Takes in nutrients Removes waste
|What connects the two hemispheres of the brain?
|What are the two main parts of the diencephalon?
|What are the three main parts of the lower brain stem?
|Midbrain pons medulla oblongata
|What are the three types of neurons?
|Sensory (afferent) Motor (efferent) Interneurons
|What is the function of myelin?
|Provides insulation to prevent short circuiting fibers.
|Outer brain covering
|Choroid plexus a.k.a
|blood brain barrier (with selective permeability)
|What is the biggest part of the brain?
|Deep grooves that divide the brain into left and right
|Divides cerebrum from cerebellum
|What does the frontal lobe control?
|voluntary movements Reasoning Impulse control problem solving
|What does the Broca's area control?
|What is the parietal lobe in charge of?
|receives and interprets nerve impulses from sensory receptors
|What does the occipital lobe control?
|What does the temporal lobe contain?
|What is the Wernicke's area in charge of?
|speech understanding comprehension
|What does the hippocampus control?
|Memory and learning Recognizing new info Recall special relationships
|What does the amygdala influence?
|behavior Associated with emotional reactions,
|What does the Thalamus do?
|Acts as a relay station for incoming and outgoing nerve impulses
|What body system is the hypothalamus linked to?
|What is the hypothalamus known as?
|brain of the brain
|What does the cerebellum do?
|Maintains balance Muscle tone Coordination of muscle mobvement
|What is the function of Pons
|Helps control breathing Connects parts of the brain with each other
|What is the midbrain in charge of?
|What id the medulla oblongata the center for?
|What is the major function of the spinal cord?
|Carries messages from sensory neurons to the brain for interpretation Reflex center
|What do afferent nerves do?
|Sensory Take info from receptors to the Central Nervous System
|What do efferent nerves do?
|Motor neurons Convey info from CNS to the muscles and glands
|What is the sympathetic nervous system for?
|Speeds up activity requires energy
|What does the parasympathetic nervous system do?
|Speed up vegetative activities (such as urination and digestion) and slows down or restores other activities
|What does the parasympathetic nervous system use as a neurotransmitter?
|What type of fibers do the dorsal root contain?
|Sensory nerve fibers
|What type of fibers do the ventral root contain?
|Motor nerve fibers Anterior
|What does the cervical plexus do?
|gives motor movement to muscles of the neck and shoulders receives messages
|Where does the brachial plexus give movement to?
|shoulder wrist Hand gives messages to those areas
|To what area does the Lumbar plexus give movement to?
|Butt anterior legs and thighs
|What area does the sacral plexus give movement to?
|Back/posterior of legs and thighs
|What is the largest nerve of the body?
|What is the simplest type of nerve response?
|Transient Ischemic Attack
|Mini Stroke temporary reduction of blood flow to the brain 2-5 min
|when blood flow to th ebrain is interupted
|What are the two types of a cerebrovascular accident?
|What is the difference between an ischemic and hemorrhagic cerebrovascular accident
|Ischemic -> Blood clot, treated with clot busting drugs Hemorrhagic -> Rupture of a blood vessel Harder to treat and more deadly
|Weakness of one side of the body
|Paralysis of one half of the body
|inability to express or understand speech if the left side of the brain is damaged
|Paralysis of the trunk (usually below the waist) and both legs
|Paralysis of the trunk (usually below the neck) both arms and legs
|More common travel and spread throughout the body a.k.a secondary tumor
|Inflammation of the lining of the brain and lungs (meninges) s/s: headache, fever, and stiff neck
|Inflammation of the brain
|Disturbance in voluntary muscular movement due to brain damage
|Seizure disorder of the brain characterized by a reoccurring and excessive discharge from the neurons
|Grand mal seizure a.k.a
|Tonic clonic seizure loss of consciousness and violent muscle contractions
|Absence or petit mal seizure
|brief or sudden lapse of conscious activity mostly in children
|Post ictal state
|After the seizure Brain recovers from trauma
|Increased volume of CSF in ventricles of the brain
|Autoimmune, inflammatory disease Immune cells attack myelin sheath & the myelin sheath are destroyed Destruction delays or completely blocked transmission of nerve impuses in affected areas
|Progressive disease cant remember recent memories Nerve endings in brain degenerate and block signals Abnormal fibers build p and cause tangles
|For alzheimers disease, what are the areas of degeneration called?
|inflammation of a nerve
|Inflammation of sciatic nerve
|Involves 7th cranial nerve (Facial) One side of their face droops and is numb
|Acute viral infection One sided infection of cutaneous nerve
|Carpal tunnel syndrome
|Affects median nerve and flexor tendons that attach to the carpals
|caused by severe blows to the head results in bran damage and can cause unconsciousness
|What connects the brain to the peripheral nervous system?
|What are the two divisions of the PNS?
|Systematic nervous system
|Subdivision of the peripheral nervous system Controls skeletal sysytem
|Side of the brain responsible for logical thinking
|What are the four main parts of the brain?
|Cerebrum Diencephalon Brain Stem Cerebellum
|what connects the brain to the peripheral nervous system?
|What nerve goes with the cervical plexus?
|The phrenic nerve
|What is the cervical plexus in charge of?