Chapter 8 Questions Flashcards
Excitatory neurotransmitter found in distinct regions on the CNS and is involved in cognition, motor, and neuroendocrine functions
Dopamine
Primary cholinergic neurotransmitter
Acetylcholine
Excitatory neurotransmitter that plays a major role in generating and maintaining mood states
Norepinephrine
Neurotransmitter that plays a role in emotions, cognition, sensory perceptions, and essential biologic functions
Serotonin
Primary cholinergic neurotransmitter found in greatest concentration in the peripheral nervous system
Acetylcholine
Sympathetic response on the lungs
Relaxation of bronchial muscles
Parasympathetic response on the lungs
Bronchoconstruction and secretion from bronchial glands
What does serotonin play a role in
Emotions, cognition, sensory perceptions, and essential body functions like sleep and appetite
Part of the brain that regulates postural balance and positioning
Cerebellum
Function of hypothalamus
Temperature regulation
Functions as a regulatory structure to relay all sensory information, except smell, sent to the CNS from the PNS
Thalamus
Involved in storing information, especially the emotions attached to memories
Hippocampus
Where is the Broca’s area
Frontal lobe
What controls the motor function of speech
Broca’s area
What does the damage to the Broca’s area produce
Expressive aphasia or difficulty with the motor movements of speech
Primarily responsible for receptive speech
Wernicke’s area
Basic emotions, needs, drives, and instinct begin and are modulated in the ______
Limbic system
The ________ are involved with motor functions and association in both learning and the programming of behavior or activities that are repetitive and, done over time, become automatic
Basal ganglia
Which neurotransmitter is decreased in those with Parkinson’s disease
Dopamine
A decrease in what neurotransmitter has been implicated in seizure disorders
GABA
Does the extrapyramidal motor system control memory and vision?
No
What is controlled by the extrapyramidal motor system
Muscle tone, common reflexes, and automatic voluntary motor functioning like waking
What neuropeptide suppresses pain and modulates mood and stress
Endorphins
Primary inhibitory neurotransmitter in the CNS
GABA
What is the space where the electrical intercellular signal becomes a chemical extra cellular signal?
Synaptic cleft
Which neurotransmitters reduce the membrane potential and enhance the transmission of signal between neurons
Excitatory neurotransmitters
Which neurotransmitters slow down never impulses
Inhibitory neurotransmitters
Decreased norepinephrine has been associated with ________ and excessive norepinephrine has been associated with _________.
Decreased- depression
Excessive- manic symptoms
Arousal is main function also deals with attention
Reticular formation
Components of hindbrain
Medulla, pons, reticular formation, cerebellum
Components of midbrain
Mostly tectum
Components of brain stem
Cranial nerves
Components of forebrain
Limbic system, thalamus, hypothalamus, cerebrum
Sensory relay system
Thalamus
What is the Circle of Willis
Insurance policy. If one pathway gets blocked then blood can find another way around it
How many cervical spine
8
How many thoracic spine
12
How many lumbar spine
5
How many sacral spine
5
How many pairs of spinal nerves are there from brain stem to cauda equina
31
Where does cauda equina start and stop
Starts at T12-L1 and goes to coccyx
Acronym for knowing sensory or motor for cranial nerves
Some say marry money but my brother says big brains mean more
Function of Pre central gyrus
Motor
Function of post central gyrus
Sensory
All motor neurons synapse in _______
Gray matter
Motor pathway
Efferent
Descending
Sensory pathway
Afferent
Ascending
Depolarization is the ______ of _____
Influx of sodium
Repolarization is the _______ of ______
Outflux of potassium
What is NMDA
Memory drug. Mimics glutamine which is an excitatory drug that enhances creation of memory
Functions of dopamine pathways
Reward (motivation), pleasure/euphoria, motor function (fine tuning), compulsion, perseveration
Functions of serotonin pathway
Mood, memory processing, sleep, cognition
What are cortisol, norepinephrine, and epinephrine/adrenaline produced by? What are they involved in regulating?
Adrenal gland, involved in regulating bodily functions during stressful and emotional states
Difference in CT and MRI
CT is X-ray and MRI is magnets
How is the nervous system organized
By function
How are neurotransmitters released
By terminals on axons
Neurons are organized into ________
Sensorimotor circuits