Systems of The Body Flashcards
Nervous System
Network of interconnected fibers that functions to regulate body functions
2 branches of the nervous system
Central
Peripheral
Central NS
Brain and spinal cord
2 branches of the peripheral NS
Somatic
Autonomic
Somatic NS
Voluntary- Connects nerve fibers to voluntary muscles and gives brain sensory information
Autonomic NS
Involuntary- Connects Central NS with internal organs
2 branches of the autonomic NS
Sympathetic
Parasympathetic
Sympathetic NS
Prepares body to respond to emergencies and fear
Catabolic
Mobilization and exertion of energy– Sympathetic NS
Anabolic
Brings body back to a normal state– Parasympathetic NS
3 parts of the hindbrain
Medulla
Pons
Cerebellum
Medulla
Above where spinal cord enters skull– Regulation of heart rate, blood pressure and respiration
Pons
Link between hindbrain and midbrain, controls respiration
Cerebellum
Voluntary muscle movement, balance, muscle tone, posture
Midbrain
Coordination of visual and auditory reflexes
2 sections of the forebrain
Diencephalon
Telencephalon
Diencephalon
Composed of thalamus and hypothalamus
Thalamus
Recognition of sensory stimuli and relay of sensory impulses to cerebral cortex
Hypothalamus
Regulate centres in the medulla- Regulate water balance, appetite and sex drive
Telencephalon
Left and right hemispheres of cerebral cortex
Cerebral cortex
Intelligence, memory, personality
4 lobes of the cerebral cortex
Occipital
Frontal
Parietal
Temporal
Limbic system
Border midline and control stress and emotional response
Amygdala
Threat detection
Hippocampus
Emotional memories
Catecholamines
Secretion of epinephrine and norepinephrine by sympathetic NS
How many Canadians will have a nervous system disorder
1/3
Epilepsy
Idiopathic CNS disorder, treated by medication and behaviour intervention
Cerebral Palsy
Non progressive disorder causing loss of motor control
Alzheimers
Progressive and degenerative disease of the brain
Parkinsons
Progressive degeneration of the basal ganglia, possibly caused by dopamine depletion
Basal Ganglia
Group of nuclei controlling smooth motor coordination
Multiple Sclerosis
Degenerative disease causing paralysis, blindness and deafness