The Central Nervous System-note 4 Flashcards
Cerebrospinal fluid
Between arachnoid and pia matter
Definition of Meninges?
3 layers that make it up?
Membranes located between bone and soft tissues of the nervous system
Dura matter = outmost layer, blood vessels, nerves
Arachnoid matter= no blood vessels located between these
Pia matter= contains many nerves and blood vessels to nourish cells of brain and spinal cord
Spinal cord function? And info
Function- conducting nerve impulses, serves as a center for spinal reflexes
31 segments
Cervical = upper limbs
Lumbar = nerves to lower limbs
Spinal reflexes sensory nerves vs motor nerves
Sensory nerves enter through dorsal root ganglia, carry message TO brain
Motor nerves exit through central root ganglia carry message FROM the brain
Cerebrum
-largest, sensory and motor functions, higher mental function (memory reasoning)
Cerebellum
-coordinate voluntary movement
Cerebral hemispheres
Left and right side of brain
Corpus callosum
Connects the two hemispheres
Function of Frontal lobe
Reasoning, thinking, language
Motor areas controls voluntary muscles
Function of parietal lobe
Touch, temp, pain, relation of body parts
Function of temporal lobe
Hearing and vision, memory, interpreting sensory info
Function of occipital lobe
Vision, interprets, visual info
Function of Cerebral cortex
Thin layer of grey matter that is the outermost portion of cerebrum (wrinkles)
What Is the Ventricles
Fluid filled cavities, contain cerebrospinal fluid
What is the function of the thalamus?
Part of the brain stem
Relay station
