NS6 Flashcards
The CNS has 4 layers of protection
Bone, Meninges, Cerebrospinal Fluid (CSF), Blood brain barrier
Central Nervous
System (CNS)
Made up of
brain and
spinal cord
What is the Cerebrospinal Fluid (CSF)
Fluid circulating the CNS (in meninges)
Acts as a shock absorber
Transports wastes and nutrients
The Three types of Meninges
Dura Matter, Arachnoid mater, Pia Mater
Spinal Cord has how many sets of nerves
31 set of nerves
Dorsal root
carries sensory neurons
Cell bodies in ganglia near spinal cord
Ventral Root
contains motor neurons
What are the 3 regions?
Hindbrain, midbrain, forebrain
Where is the Hindbrain located
back part, joins with spinal cord
what is the Cerebellum?
Movement, coordination, balance
What is the medulla oblongata?
Autonomic nervous control
Where is the midbrain, and what it is used for?
Beginning of brain stem, relay center for eyes
and ears
What is the Forebrain?
Cerebrum
Largest part of brain
Divided into left and right hemispheres
What do the two Hemispheres do
Right (artistic), left (logical)
Right side controls the left side of the body
What is the Cerebral Cortex?
surface of cerebrum, has deep fissures (folds to increase SA).
Can be divided into 4 lobes based on function
What are the 4 lobes?
Frontal, Temporal, Parietal, Occipital
What does the frontal lobe control?
motor area, intelligence,
personality, some emotions
What does the Temporal lobe do?
hearing and memory
What does the parietal lobe do?
senses (touch, temperature,
pain, taste), emotions
What does the occipital love do?
Vision
What is the corpus callosum?
bundle of nerves
connecting two hemispheres
What is the Thalamus?
relay center for sensory
information to a specific lobe of cerebral cortex
What is the Hypothalamus?
Maintains homeostasis,
coordinates nerves and hormones
What is the Olfactory Bulb?
Receives and interprets
smell (bottom of temporal lobe)
