Cerebrum Flashcards
Corpus Callosum
connects hemispheres
average brain
- 3lbs
- 3/4 water, 1/4 neurons, glial cells, and connective tissue
Components
- Cerebrum
- Diencephalon
- Brian Stem
- Cerebellum
Cerebrum
- everything visible
- made of gyri and sulci
Fissure
- deeper sulci
Deepest fissure separating hemispheres
- superior longitudinal fissure
Horizontal across brain
Rholandic/Central fissure
Lateral fissure
Sylvian fissure
Separates cerebellum from cerebrum
Transverse fissure
Four Lobes
- Frontal
- Temporal
- Occipital
- Parietal
Frontal Lobe
- voluntary behavior
Precentral gyrus
- body parts represented disproportionately
- corresponds to processing motor information
Primary motor cortex
- skilled volitional movement of muscles
Olfactory bulb
- strip of nerve with ball
Area Triangularis - (Broca’s area)
- posterior inferior frontal gyrus
- Pars Triangularis
- Pars Orbitalis
- Pars Opercularis
Occipital Lobe
- primary visual cortext
- Calcarine fissure and lingual gyrus - color perception
- association areas - neither sensory or motor
Limbic Lobe
- emotional center of the brain
- lies between corpus callosum and lobes
Amygdala
- processes dirves, emotions, memory
Fornix
- above amygdala and hippocampus, close to thalamus
Insula
- not in a lobe, along the bottom of sylvian fissure
Parietal Lobe
- perception, visuospatial, information, touch, and body awareness
- damage = Tactile Agnosia/Astereognosis
Postcentral gyrus
- corresponds to primary somatosensory cortext
- responsible for aesthetic sensation
Angular gyrus
- facilitates the integration of info related to hearing, vision, and touch
- damage - disturbances in language recognition and object distinction
Supramarginal gyrus
- integration of hearing, vision, and touch information
- damage - disturbances in language recognition and object distinction
Temporal lobe
- processing comprehension of language
Wernicke’s Area
- posteriors superior temporal gyrus
Planum Temporale
- wernicke’s goes into it
Heschl’s Gyrus
- beneath temporal and parietal
- involved in hearing, primary auditory cortext
- right hemisphere - perception and recognition of nonverbal stimuli
3 important gyri in temporal lobe
- Inferior temporal gyrus
- Middle temporal gyrus
- Superior temporal gyrus (sylvian fissure)
