CNS: Cerebrum & Cerebellum Flashcards
Sensory and motor information in its gray matter, Innervation of body inferior to head
Ascending and descending tracts within its white matter: provides path for signals bw body and brain
Spinal cord
Functions of brain
Controls Heart rate respiratory rate blood pressure
Maintains internal environment
Memory consciousness etc
Most superior (rostral) part of brain
Made up of 2 hemispheres separated by longitudinal fissure
Cover the diencephalon and superior part of brain stem
Cerebrum
Outer thin layer of gray matter (cell bodies dendrites neuroglia covers surface of cerebrum
Cerebral cortex
Deep to cerebral cortex consists of myelinated axons allowing hemispheres to communicate with one another and with brain stem and spinal cord
Cerebral White matter
Shallow grooves
Sulci
Ridges
Gyri
Separates temporal lobe from frontal and parietal lobes
Lateral sulcus
Separates frontal lobe from partial lobe
Central sulcus
Separates parietal lobe from occipital lobe
Parieto-occipital sulcus
Lobe cannot be visualized
Buried deep within lateral sulcus
Taste
Insula
Surrounded by cerebral hemispheres and consists of thamalus, hypothalamus, epithalamus
Diencephalon
Egg-shaped and paired structure
Relay stations for sensory impulses ascending to sensory cortex in cerebrum
Nuclei sends axons to a particular portion of cerebral cortex
Anterior nuclei, medial nuclei, lateral nuclei
Thalamus
Inferior portion of diencephalon
Inferiorly is pituitary gland
Consist of nuclei
Main visceral control center
Hypothalamus
Functions of hypothalamus
Control autonomic nervous system
Regulation of body temperature
Regulation of hunger and thirst sensation
Regulation of sleep wake cycle
Control endocrine system
Control emotions
