Human Brain
This organ is described as the most _____________.
Complex
The gray matter is composed of _______________.
Collections of neuron cellbodies and associated neuroglia.
Allows you to think, reason, and make decisions
Frontal lobe
Motor speech area and motor movement of speech
Broca's Area
Name of cavities which hold our CSF?
Ventricles
Three layers of the CNS?
Pia, arachnoid, and dura
Spinal cord is the communication between ______and _________
PNS and brain
The largest part of the human brain?
Cerebrum
White matter is composed of _______________.
Bundles of parallel axons and their coverings.
Interprets your vision
Occipital Lobe
Conveys the meaning of speech and interpretation
Wernicke's area
Purpose of the CSF
Cushion and protect the brain AND carries nutrients and oxygen.
Where is the subdural space and why significant
between the dura and arachnoid. Bleeding can occur.
Cross section of SC have 3 sides/tracts
Dorsal; Ventral; Lateral
The folded material in the brain is called ____________
Gyri
Brainstem is separated into what 3 sections?
(3 answers)
Medulla, pons, midbrain
Interpretes your hearing
Temporal Lobe
Largest commissure and communicates the R and L hemisphere
Corpus Callosum
Where is CSF produced and stored?
Choroid plexuses
Where is the epidural space and how is it used in anesthesiology?
Between vertebra and dura. Used to inject numbing medicine ie. epidural
Sensory neurons are Multi, Uni or Bi Polar?
Unipolar
What percentage of our body weight is our brain?
2%
What does the Thalamus do?
Major relay station.
Receives all sensory information of touch all over the body
Parietal Lobe
Name of fissue which divides the cerebrum into 2 hemispheres?
Longitudinal fissure
Largest ventricles (make up 80%)
Lateral Ventricles
Swelling in brain can cause blockage of ________
CSF
Sensory neurons are in ___________horn; and Motor neurons are in ___________horn and autonomic neurons are in _______________horn?
Dorsal; Ventral; Lateral
What percentage of oxygen does our brain get?
20%
Hypothalamus function and regulation? (2 answers)
Master endocrine gland and controls the pituitary gland.
Controls all motor neurons and is in the frontal lobe
Primary motor cortex
Name of the fissure which separates the temporal lobe?
Lateral fissure
Blockage of the CSF can cause _______________
Brain swelling
Cause of stiff neck, HA, and fever with the meninges?
Meningitis
Areas involved with the reflex arc that cause the reflex?
PNS and gray matter of the spine
The brain needs a steady supply of ________and ___________ (2 answers).
Oxygen and glucose
Purpose of the cerebellum (2 answers)
balance and equilibrium
Locacated on a single gyro and localizes sensations
Primary somatic sensory cortex
Name of part of brain which holds all the cranial nerves
Brainstem
Filters or sewers of the CSF and where do they dump back into?
Arachnoid granulations and to the sagittal sinus
Blockage of CSF due to brain swelling can cause____
Death
Motor pathways are ___________ and Sensory pathways are ______________.
Descending; ascending