LeonardCrainCentralNervousSystem
Cerebrum
Lobes
Frontal Lobe - think, plans, & decision making
Parietal Lobe - Receives sensory information
Temporal Lobe - Emotional response, memory, recognition of objects, auditory and olfactory cortex
Occipital - location of the visual cortex
Insula (hidden lobe) - gustation cortex, general visceral sensation
Gyri
Postcentral Gyrus - receiving sensory information - primary somatosensory cortex
Precentral gyrus - (located anterior of the central sulcus) - primary motor cortex, control of voluntary movement
Broca - left hemisphere of brain controls motor movement of speech
Wernickle - allows us to understand speech
White matter Tracts
Association tract - (shortest) - connects parts of same hemisphere
Commissural - take us from one sphere to another
Projection - (longest) - send sensory info through out the body (descending motor signals)
Diencephalon
Thalamus - all sensory info that goes to the cortex heads through the thalamus
Hypothalamus - main visceral control center - formation of memory
epithalamus - has pineal gland - prepares us for sleep
Brain Stem
Midbrain - motor movement, particularly movements of the eye
Pons - involved with automatic behaviors
Medulla Oblongata - involved with autonomic behavior
cerebellum - maintain posture & equilibrium
Cerebellar Peduncles
Superior - (efferent) connects midbrain to cerebellum
Middle - (efferent) - connects pons to cerebellum
Inferior - (afferent) connects medulla oblongata to cerebellum
Spinal Cord
Conus Medullaris - (very end - tapers to a point)
Cuada Equina - (latin for horse tail)
Filum Terminale - Fibrous connective tissue
Anterior roots - carries motor
Posterior roots - carries sensory
Posterior root Ganglion - group of neurons
CNS protection
Menings
Dura Mater - (tough mother), tough, dense fibrous C.T
Pia Mater - Fibrous C.T - surface layer of ceribrum
Arachnoid Mater - (spider mother) - in between the dura and pia mater
Subarachnoid - space filled with C.S.F also blood vessals
Epidural Space - filled with fat/ adipose
Dural Sinus - primarily along the fissures/ but also deeper