Nervous System Flashcards
(26 cards)
Autonomic NS?
Regulates bodies internal enviro
Controls involuntary muscles (heart)
Unconscious and automatic
Somatic NS?
Interacts with external enviro
Controls voluntary muscles and sensory info
Conscious and voluntary
Autonomic NS has two separate systems?
sympathetic NS
prepares for fight or flight, increases breathing, heart rate, decreases digestive activity
Parasympathetic NS
promotes energy conservation, non emergency, opposite of SNS
3 major devisions of the brain?
Cerebral hemisphere
Brain stem
Spinal cord
4 components of the hindbrain?
Medulla
Reticular formation
Pons
Cerebellum
Medulla (hindbrain)?
Tracts carrying signals between brain and body
Controls some vital reflexes such as breathing, heart rate and vomiting
Reticular formation (hindbrain)?
Role in arousal, sleep, attention, movement ..
Pons (hindbrain)?
Where axons from each side of the hemisphere cross
Cerebellum (hindbrain)?
Sensorimotor
Involved in cognitive functions
Midbrain 2 parts?
Tectum and tegmentum
Forebrain 2 parts? (Diencephalon)
Thalamus and hypothalamus
Thalamus? (Forebrain)
Sensory relay (not olfactory)
Hypothalamus?
Motivated behaviours
Regulates release of hormones from pituitary gland
Forebrain (telencephalon)?
Largest division of the human brain
Initiates voluntary movements, sensory input and cognitive functions
Cerebral cortex, basal ganglia, limbic system
Basal ganglia
Voluntary motor responses
Limbic system
Motivated behaviour and emotion
Cerebral cortex
Outer surface of cerebral hemispheres
Large furrows
Fissures
Small furrows
Sulci
Neurons communicate across the hemispheres mainly through the..
Corpus callosum
Each hemisphere is divided into 4 lobes
Occipital
Parietal
Temporal
Frontal
Occipital lobe?
Visual stimuli
Parietal lobe?
Touch sensations and muscles
Also spatial, numerical, attention
Temporal lobe?
Auditory info
Also memory and recognition
