nervous system Flashcards
(24 cards)
Where is the primary somatosensory cortex
postcentral gyrus
What receives general sensory input from skin, joints, and tendons
Primary somatosensory cortex
The primary somatosensory cortex is capable of what?
Spatial discrimination, which is the identification of body region being stimulated
Where is the somatosensory association cortex located?
Posterior to the primary somatosensory cortex
What does the somatosensory association cortex do?
Integrates sensory input from primary somatosensory cortex for understanding of object. Determines size, texture, and relationship of parts of objects being felt
Where is the primary visual cortex
Extreme posterior tip of occipital lobe
Where does the primary visual cortex receive information from?
Receives visual information from retinas
Where is the visual association area and what does it do
surrounds primary visual cortex, uses past visual experiences to interpret visual stimuli (ability to recognize faces)
Where is the primary auditory cortex located and what does it do?
Superior margin of temporal lobes, interprets information from inner ear as pitch, loudness, and location
Where is the auditory association area located and what does it do?
Located posterior to the primary auditory cortex, it stores memories of sounds and permits perception of sound stimulus
Where is the primary olfactory cortex? And what is its purpose?
Located at the medial aspect of the temporal lobe, and it is the region of conscious awareness of odors
Where is the gustatory cortex and what does it do?
Located in the insula just deep to the temporal lobe. Involved in perception of taste
Where is the visceral sensory area and what does it do?
Posterior to the gustatory cortex, conscious perception of visceral sensations, ex. upset stomach or full bladder
What is cerebral white matter’s purpose?
Allows communication between cerebral areas and between the cortex and lower CNS
Cerebral White Matter: Association fibers
horizontal; connect different parts of the same hemisphere
Cerebral White Matter: Commissural fibers
horizontal; connect gray matter of two hemispheres
Cerebral White Matter: Projection fibers
vertical; connect hemispheres with lower brain or spinal cord
Functions thought to be of the basal nuclei (5)
Influence muscle movements
Role in cognition and emotion
Regulate intensity of slow or stereotyped movements
Filter out incorrect/inappropriate responses
Inhibit antagonist/unnecessary movements
What is the diencephalon made up of and what does it enclose?
Thalamus, Hypothalamus, Epithalamus
Encloses third ventricle
What percentage of the diencephalon does the Thalamus make up
80%
What is the function of the Thalamus?
Gateway to cerebral cortex, it sorts, edits, and relays ascending input
What two features of the brain are part of the Hypothalamus?
Mammillary bodies, and the infundibulum
The stalk that connects to pituitary gland
infundibulum
What does the Hypothalamus control? Which controls what?
It controls the autonomic nervous system, which includes blood pressure, rate and force of the heartbeat, digestive tract mobility, and pupil size.
