Answers Graded A+
Nervous System - Correct answer-Uses electrical impulses, travels along neutrons,
nerve cells.
Compared to endocrine system, nervous system makes quick, short term responses
to our environment in order to maintain homeostasis.
At maturity, nervous system undergo numerous changes.
Loss of nervous in brain contribute to decrease ability to send nerve impulses to
and from the brain in older adults.
Meninges - Correct answer-three protective membranes that surround the brain and
spinal cord
Dura Mater - Correct answer-thick, outermost layer of the meninges surrounding
and protecting the brain and spinal cord
Arachnoid Mater - Correct answer-middle layer of the meninges
Pia Mater - Correct answer-thin, delicate inner membrane of the meninges
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,Sympathetic System - Correct answer-Fight or flight response.
Activated under stress responses.
Sympathetic nerves increase heart rate, blood pressure, breathing rate, while
inhibiting digestion.
Stimulate adrenal medulla gland to release epinephrine and norepinephrine, also
know as adrenaline.
Require more energy therefore, epinephrine also stimulate liver to release more
glucose for extra energy for muscles in times of stress.
Parasympathetic System - Correct answer-Rest and digest response.
Activated to restore calmness and recover after stress.
Sows heart rate, blood pressure, breathing rate, while promoting digestion of food,
urination and defecation.
Stimulants or depressants - Correct answer-Directly affects sympathetic and
parasympathetic nervous systems.
Caffeine, causes sympathetic nervous system to increase heart rate and blood
pressure.
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, Although stress response like heart rate and blood pressure are involuntary, we do
have the capacity to control them with highly developed Cerebrum.
Cerebrum - Correct answer-Meditation, deep breaths can lower our heart rate and
blood pressure therefore managing our stress levels.
Neuralgia - Correct answer-Glial cells.
Support and protect neutrons, removes their waste and defend them against
infections.
Most brain cells
Astrocytes - Correct answer-Star shaped cells wrapping around nerve cells forming
supporting network in Central nervous system CNS.
Help regulate nutrients and ion for neutrons by attaching neutrons to their blood
vessels
Oligodendroglia - Correct answer-Provides semi rigid support between neutrons,
similar to connective tissue.
Support by producing whitish fatty myelin sheath on neutrons of CNS
Myelin sheath - Correct answer-A white matter, fatty covering wrapped around the
axons of some neurons that increases their communication speed.
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