Cerebrum Flashcards
Structures that protect cerebrum
CSF
Meninges
Skull
Name of source of energy of brain
Glucose
Between genius and normal person, who has bigger brain
Neither , same size for everbody
What differentiate a genius brain from a normal person
Number of synapses
Superfical Structure that seperates right form left part of cerebrum
Longitudinal fissure
Internal structure that allow communication between right and left halves of cerebrum
Corpus callosum
Why is corpus callosum white
Because many myelinated axons
What could happen if corpus callosum not able to allow communication between halves of brain
Autism
Bump on surface of brain
Gyri
Groove on surface of brain
Sulci
Fissure that seperates frontal lobe from parietal lobe
Central sulcus
Name of gyri around central sulcus
Pre central gyrus
Post central gyrus
Function of precentral gyrus
Primary Motor cortex
Name of map in the pre central gyrus
Motor homunculus
Fissure that seperates occipital lobe from cerebellum
Transverse fisssure
Fissure that seperates frontal and parietal lobes from temporal lobes
Sylvian/lateral fissure
3 functional divisions of brain
Motor areas
Sensory areas
Higher function areas
Most prominent sulcus of brain
Central sulcus
Cortices found in central sulcus
Primary motor cortex
Primary somatosensory cortex
2 divisions of limbic system
Limbic cortex
Deep limbic structures
What forms limbic cortex
Cerebral sulci of the frontal, temporal, parietal
Cerebral gyri of the frontal , temporal, parietal
Structures of deep limbic structures
Hippocampal formation Amygdala Diencephalon Olfactory cortex Basal ganglia Basal part of cerebrum and brainstem
Function of limbic system
Control emotions, olfaction, homeostatis
Function of hippocampal formation
Long term memory
Spatial navigation
Function of amygdala
Response to fear
Structure that seperates cerebrum into left and right hemispheres
Medial longitudinal fissure
Frontal lobe function
Motor control and planning , concentration, language , rational and executive control
Precentral gyrus functionm
Brodmann area 4 or
Primary motor cortex
Lobe that contains Primary sensory cortex
Parietal lobe
Primary auditory cortex located in …
Superior temporal gyrus
What does the brocas area control
Motor component of speech production
Postcentral gyrus function
Somatosensory cortex responsible for touch, body position and movement sensing and
What is wernickes area
Functional unit of cerebral cortex involved in comprehension of spoken language
Cortex blood supply
Cortical branches of anterior, middle cerebral from internal carotid artery
cortical branch of posterior cerebral arteries from basilar artery
Parietal lobe function
Integrate proprioceptive and mechanoceptive stimuli
Language processing
Primary somatosensory cortex
Somatosensory association cortex
Occipital lobe function
Primary visual cortex
Center for visual procesing
Temporal lobe function
Decode sensory input for retenion of visual memory
Primary auditory cortex
Wernickes area
Insular cortex function
Processing and integration of taste sensation
Visceral and pain sensation
Vestibular functions
What does homunculus means
Little man
On the motor cortical homunculus , what part of the body is the most medial and the most latera
Most medial - genitals and then lower limbs part
Most lateral - head part
What determines the amount of space a body part takes on the motor control homunculus
Proprotional to intricacy of motor function
What is the direction of body part on the motor cortical homunculus
Genitals -> toes -> ankle -> knees -> hip -> trunk -> shoulder -> elbow -> wrist -> hand and fingers with thumb largest area -> forehead -> brows -> eyes -> nose-> lips being largest of face -> chin -> tongue -> pharynx
What is the logic behind size of body parts represented on sensory cortical homunculus
Amount of cortex per body part is proportional to complexity of sensation received from an organ
Is area of genitals larger for sensory or motor cortical homunlucus ?
Sensory as more complex sensory information
