Task 1 - The nervous system Flashcards
Peripheral nervous system
has two parts somatic and visceral PNS
Brain
protected by three membranes - dura mater, arachnoid membrane and pia mater
spinal cord
inside of the bony vertebral column, attached to the brainstem - bring information from the skin, joints and muscles to the brain
Transection of the spinal cord
results in anesthesia - lack of feeling in the skin and paralysis of the muscles, they cant be controlled by the brain
dorsal root (spinal cord)
axons bring information into the spinal cord
ventral root (spinal cord)
axons carry information away from the spinal cord
cerebrum
two cerebral hemispheres: right side controls movement from the left side of the body, and left side from the right side.
Responsable for complex functions
consists of the telencephalon (cerebral cortex, white matter and basal ganglia) and the diencephalon (thalamus and hypothalamus)
cerebellum
movement control center
brain stem
brings information from the cerebrum to the spinal cord and cerebellum and vice versa. Responsable for vital functions
damage to the brain stem is fatal
Frontal lobe
cognitive functions, reasoning , planning and problem solving, voluntary movement and personality
occipital lobe
visual processing
temporal lobe
auditory procesing
pariental lobe
sensory processing and spatial awareness
Somatic nervous system
the skin, the joints and the muscles that are under voluntary control
somatic motor axons
muscle contraction