CNS Flashcards
What are the three meninges surrounding the brain?
dura mater, arachnoid mater, pia mater
What is CSF?
Fluid that bathes the brain and spinal cord
What are the three functions of CSF?
1.Shock absorption
2.Nutrients
3.Immune protection
Where is CSF made?
Choroid plexus in ventricles
What space does CSF occupy
Subarachnoid space
Where does CSF enter the blood stream
Reabsorbed through arachnoid granulation
What are the ventricles?
2 lateral
1 3rd
1 4th
What is the blood brain barrier
Special capillaries restrict the flow of many substances
What is the blood CSF barrier
more permeable, choroid plexus filters blood
What is the corpus callosum?
Nerve fibers that join the two halves of the brain together
What are sulci?
Grooves in the cerebrum
What are gyri?
Raised areas on the cerebrum
Which lobe of the cerebrum is the site of complex problem solving?
Frontal lobe
What lobe of the cerebrum contains the visual processing center?
Occipital lobe
What lobe of the cerebrum contains the auditory processing center?
Temporal lobe
Where is the sensory cortex located?
Parietal lobe
Where is the motor cortex located?
Frontal lobe
What is the function of Broca’s area?
Controlling/producing speech
What is the function of Wernicke’s area?
Interpreting auditory code
What is the function of the sensory cortex?
receives info from skin surface
What is the function of the motor cortex?
controls voluntary movement
Which part of the brain is responsible for coordination and balance?
Cerebellum
How would the cerebellum be activated when we drive a car?
moving our foot from gas to break, keeping self sitting up right, moving hands on the wheel
Which part of the brain includes the hypothalamus and regulates body temperature
Diencephalon
What is the function of the pineal gland?
produces melatonin
Which structure within the diencephalon relays sensory information to the cerebrum and transmits replies to the cerebellum?
Thalamus
Which part of the brain controls basic functions like heart and breathing rates?
Brain stem
What three structures make up the brain stem
Midbrain
Pons
Medulla Oblongata
What structure is usually the first to be damaged in Alzheimer’s disease?
Hippocampus
What does the hippocampus do?
The hippocampus encodes long term memories.
What is the amygdala
Controls strong emotions such as fear and anger
How is the amygdala involved in memories
Attaches emotional significance to memories
How would the amygdala be used when we drive a car?
Road rage
