PSYCH 381 Exam 1 Dr. Hedges UPDATED
ACTUAL Questions and CORRECT Answers
How many neurons and glial cells are in the brain? - CORRECT ANSWER - 86 billion neurons, 87 Billion Glial
cells
2 divisions of autonomic nervous system - CORRECT ANSWER - sympathetic nervous system and
parasympathetic nervous system
True or false, there is an association between amount of neurons and intelligence - CORRECT ANSWER - FALSE
What is a comprehensive map of neural connections in the brain "wiring diagram"? - CORRECT ANSWER -
Connectome
Element or system of behavior passed on from one individual to another - CORRECT ANSWER - meme
Flynn Effect - CORRECT ANSWER - The rise in average IQ scores and overall intelligence that has occurred
over the decades in many nations--biggest cause of this is more resources in increased emphasis and levels of education
(interesting fact, kids during covid had a decrease on this)
Frontal Cortex is in charge of... - CORRECT ANSWER - executive functioning
Large Cavities in brain with CSF that keep the brain cushioned and buoyant - CORRECT ANSWER - ventricles
If the ventricles are enlarged... - CORRECT ANSWER - Brain matter is decreasing
Part of brain that is responsible for the produce of Cerebral Spinal Fluid - CORRECT ANSWER - Choroid Plexus
Where do axon structures begin on the cell/neuron? - CORRECT ANSWER - Axon Hillock
Glial cells responsible for creating myelin in the brain - CORRECT ANSWER - Oligodendrocytes
Biological process that makes Epigenetics possible - CORRECT ANSWER - Methylation--the chemical and
biological process
Epigenetics - CORRECT ANSWER - determines which genes are expressed and how they are expressed based on
your nature and nurture from environment. These can change through the course of your life, and can impact generations
ahead (choices matter!)
4 substances used for resting potential, depolarization, and hyperpolarization are - CORRECT ANSWER -
potassium, chloride, sodium, proteins
Small changes in voltage across the cell membrane - CORRECT ANSWER - Graded Potentials
Conduction between nodes of Ranvier - CORRECT ANSWER - Saltatory Conduction (gaps between myelin that
allows nerve conductions to be faster) (Saltar in spanish means to jump)
Nodes of Ranvier - CORRECT ANSWER - gaps in the myelin sheath
In resting potential sodium is more prevalent inside our outside the cell? - CORRECT ANSWER - Outside
Multiple Sclerosis is associated with damaged - CORRECT ANSWER - myelin
Dopamine is most associated with this degenerative disease - CORRECT ANSWER - Parkinsons (decreased
dopamine production in the brain-leading to mood and lower cognitive abilities)
In habituation, the influx of____is decreased - CORRECT ANSWER - calcium
ACTUAL Questions and CORRECT Answers
How many neurons and glial cells are in the brain? - CORRECT ANSWER - 86 billion neurons, 87 Billion Glial
cells
2 divisions of autonomic nervous system - CORRECT ANSWER - sympathetic nervous system and
parasympathetic nervous system
True or false, there is an association between amount of neurons and intelligence - CORRECT ANSWER - FALSE
What is a comprehensive map of neural connections in the brain "wiring diagram"? - CORRECT ANSWER -
Connectome
Element or system of behavior passed on from one individual to another - CORRECT ANSWER - meme
Flynn Effect - CORRECT ANSWER - The rise in average IQ scores and overall intelligence that has occurred
over the decades in many nations--biggest cause of this is more resources in increased emphasis and levels of education
(interesting fact, kids during covid had a decrease on this)
Frontal Cortex is in charge of... - CORRECT ANSWER - executive functioning
Large Cavities in brain with CSF that keep the brain cushioned and buoyant - CORRECT ANSWER - ventricles
If the ventricles are enlarged... - CORRECT ANSWER - Brain matter is decreasing
Part of brain that is responsible for the produce of Cerebral Spinal Fluid - CORRECT ANSWER - Choroid Plexus
Where do axon structures begin on the cell/neuron? - CORRECT ANSWER - Axon Hillock
Glial cells responsible for creating myelin in the brain - CORRECT ANSWER - Oligodendrocytes
Biological process that makes Epigenetics possible - CORRECT ANSWER - Methylation--the chemical and
biological process
Epigenetics - CORRECT ANSWER - determines which genes are expressed and how they are expressed based on
your nature and nurture from environment. These can change through the course of your life, and can impact generations
ahead (choices matter!)
4 substances used for resting potential, depolarization, and hyperpolarization are - CORRECT ANSWER -
potassium, chloride, sodium, proteins
Small changes in voltage across the cell membrane - CORRECT ANSWER - Graded Potentials
Conduction between nodes of Ranvier - CORRECT ANSWER - Saltatory Conduction (gaps between myelin that
allows nerve conductions to be faster) (Saltar in spanish means to jump)
Nodes of Ranvier - CORRECT ANSWER - gaps in the myelin sheath
In resting potential sodium is more prevalent inside our outside the cell? - CORRECT ANSWER - Outside
Multiple Sclerosis is associated with damaged - CORRECT ANSWER - myelin
Dopamine is most associated with this degenerative disease - CORRECT ANSWER - Parkinsons (decreased
dopamine production in the brain-leading to mood and lower cognitive abilities)
In habituation, the influx of____is decreased - CORRECT ANSWER - calcium
