UNIT 2: Nervous System Flashcards

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1
Q
A
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2
Q
  • Consists of all the nerve cells. It is the body’s speedy, electrochemical communication system.
  • Gather & process information, produce responses to stimuli, and coordinate the workings of different cells. Every organism has one.
A

The Nervous System

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3
Q
  • The brain and spinal cord
  • It receives, processes, interprets, and stores sensory information
  • sights, tastes, sounds, pressure, color, etc.
A

Central Nervous System (CNS)

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4
Q
  • The sensory and motor neurons that connect the central nervous system (CNS) to the rest of the body.
A

Peripheral Nervous System (PNS)

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5
Q
  • Sensory neurons (AFFERENT NEURONS)
  • Motor neurons (EFFERENT NEURONS)
  • Interneurons
A

Nervous System Neurons

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6
Q
  • send information from the body’s tissue to the brain (send message towards CNS)
A

Sensory neurons (AFFERENT NEURONS)

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7
Q
  • are used by the central nervous to communicate instructions (send messages away from CNS)
A

Motor neurons (EFFERENT NEURONS)

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8
Q
  • communicate between sensory neurons and motor neurons. Most complex and numerous.
A

Interneurons

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9
Q
  • nerves outside the brain and spinal cord
  • Connect the CNS to the rest of the body
  • Two major divisions the Motor pathway and the Sensory pathway
A

Peripheral nervous system

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10
Q
  • Somatic Nervous system
  • Autonomic nervous system
  • All portions of the nervous system outside the brain & the spinal cord
A

Peripheral nervous system

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11
Q
  • The division of the peripheral nervous system that controls the body’s skeletal muscles.
  • Controls voluntary movements of skeletal muscles
  • sends signal from brain to skeletal muscles to allow voluntary movement
A

Somatic Nervous system

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12
Q
  • Sympathetic Nervous System
  • Parasympathetic Nervous System
  • Regulates the functioning of blood vessels, glands, and internal organs like bladder, stomach, and heart.
A

Autonomic Nervous System (ANS)

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13
Q
  • Division of the ANS that calms the body, conserving its energy.
  • Calms you down, goes back to the way it was before (“rest and digest”)
A

Parasympathetic Nervous System

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14
Q
  • Division of the ANS that arouses the body, mobilizing its energy in stressful situations.
  • heart rate increases, attention becomes focused, digestions slows, etc… (“Fight, flight, or freeze”)
A

Sympathetic Nervous System

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