Neuroanatomy Intro Flashcards
CNS function
- centre of all mental activity (thought, learning, memory)
- regulates and maintains homeostasis (with endocrine system)
- nervous system keeps us in touch with internal and external environments
components of CNS
- brain
- spinal cord
where is CNS found
dorsal body cavity
what is the brain surrounded by
cranium
what surrounds spinal cord
vertebrae
what surrounds CNS
three layers of meninges
what occurs during the sensory input stage
Receptors detect internal or external stimuli and relay information towards
CNS (afferent neurones)
what occurs during the integration stage
Analysis, Storage, Decision making, Perception
what occurs during motor output stage
Muscular contraction, Glandular Secretion
neurone type for sensory input stage
afferent
neurone type for integration stage
interneurones
neurone type for motor output stage
efferent neurones
what occurs in the frontal lobe
decision making and control of voluntary movement
what occurs in the temporal lobe
- processing memories
- integrating memories emotions and senses
what occurs in the parietal lobe
processing sensory and spatial information
what occurs in the occipital lobe
vision
where is Brocca’s area found
left side of frontal lobe
where is wernike’s area found
left side of temporal lobe
where does spinal cord begin
occipital bone
where does spinal cord end
space between L1 and L2
3 functions of the spinal cord
- conduit for motor information (down spinal cord)
- conduit for sensory information (up spinal cord)
- a centre for co-ordinating certain reflex
PNS
peripheral nervous system
structure of PNS
cranial nerves and spinal nerves
function of PNS
communication lines between CNS and rest of the body
structure of sensory or afferent division of PNS
somatic and visceral sensory nerve fibres
function of sensory or afferent division of PNS
conducts impluses from receptors to the CNS
structure of motor or efferent division of CNS
motor nerve fibres
function of motor or effernt division of PNS
conduits impulses from CNS to effectors (muscles and glands)
structure of somatic nervous system
somatic motor (voluntary)
function of somatic nervous system
conducts impulses from CNS to skeletal muscles
structure of autonomic nervous system
visceral motor (involuntary)
function of autonomic nervous system
conducts impulses from CNS to cardiac muscles, smooth muscles and glands
function of sympathetic division of ANS
mobilises body systems during activity
