brain Flashcards
Gray matter
Areas in the CNS dominated by neuron cell bodies, neuroglia an unmyelinated axons. Located on the outside of the brain. Where communication occurs through neurotransmitters
White matter in the brain
Consists of myelinated axons
Central sulcus
A deep crevice separating sections of the frontal lobe from the parietal lobe
List the six major brain regions
Cerebrum cerebellum midbrain pons medulla oblongata, diencephalon
What are the lobes of the cerebrum
Frontal lobe, pareital lobe, occipital lobe, temporal lobe
What lobe is anterior to the central sulcus
Frontal lobe
What lobe is posterior to the central sulcus
Pareital lobe
What lobe is responsible for cognition, determining cause and effect in a mature brain
Frontal lobe
What lobe manages eyesight
Occipital lobe
What lobe manages auditory sense
Temporal lobe
Cerebellum manages
Complex somatic motor patterns
precentral gyrus
Motor signals
postcentral gyrus
Sensory signals
homunculus
Literally small human being, in physiology , a representation of the relationship between the sense organs and the brain
What lobe is responsible for cognitive cause and effect
Frontal lobe
Responsible for communication between brain hemispheres
Corpus callusom
Longitudinal fissure divides the brain into
Left hemisphere and right hemisphere
Three functionalities of the brain
Vegetative, cognitive, emotional
Name the ventricles in the brain
Lateral (2) third and fourth
What are the ridges in the brain called
gryi
What is in the ventricles
Continuously circulating cerebrospinal fluid to protect from trauma
Where is the general interpretive area and speech center
Left hemisphere
What brain systems is responsive for producing emotions
Limbic systems
List four areas of the limbic system
Hippocampus, amygdaloid body, thalamus and hypothalamus
Area of brain responsible for memory
hippocampus
Area responsible for fear, interfaces between the limbic system, the cerebrum and various sensory systems
amygdaloid body
What parts of the diencephalon are in the limbic system.
Thalamus and hypothalamus
Primary motor cortex
Frontal lobe- voluntary muscle control
Primary sensory cortex
Pareital lobe - conscious perception of touch, pressure, pain
Auditory and olfactory
Temporal lobe conscious perception of smell and sound
Visual cortex
Occipital lobe - conscious visual stimuli
What brain wave is a normal resting adult
Alpha waves - lower frequency
Brain wave occur during intense concentration
Beta waves - higher frequency
Outgoing cranial nerves relate to
Motor functions
Incoming cranial nerves relate to
Sense receptors
Vagus nerve controls
Heart rate
Area of the brain that has the highest control of the limbic system
hypothalamus
List three feel good neurotransmitters in the limbic system
norepinephrine, serotonin, dopamine
Define vegetative brain functions
Performing life functions without cognition, occurs in the brain stem
What type of matter comprises most of the brain stem
White matter
