The brain: Source off mind and self

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The brain Source off mind and self
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The brain Source off mind and self

• Divisions of the nervous system

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The brain Source off mind and self

• Divisions of the nervous system
• The neuron

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The brain Source off mind and self

• Divisions of the nervous system
• The neuron
• The mind

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The brain Source off mind and self

• Divisions of the nervous system
• The neuron
• The mind
• The brain

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Divisions of the Nervous System

• Central Nervous
• System (CNS)
• Brain
• Spinal cord

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Divisions of the Nervous System

• Central Nervous
• System (CNS)
• Brain
• Spinal cord
• Peripheral Nervous
• System (PNS)
• Somatic
• Autonomic

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The Central Nervous System

• The brain and spinal cord
• Brain

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The Central Nervous System

• The brain and spinal cord
• Brain
• Spinal Cord
• Neurons and
• supportive tissue
• Spinal column

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The withdrawal reflex
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Peripheral Nervous System(PNS)

• Input and output from the
• CNS
• 2 types of nerves

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Peripheral Nervous System(PNS)

• Input and output from the
• CNS
• 2 types of nerves
• Sensory nerves From
• sensory receptors (skin,
• muscle, some internal
• organs)

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Peripheral Nervous System(PNS)

• Input and output from the
• CNS
• 2 types of nerves
• Sensory nerves From
• sensory receptors (skin,
• muscle, some internal
• organs)
• Motor nerves Carry
• orders to muscles, glands
• internal organs

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Divisions of the PNS
Autonomic
Somatic
Nerves connect to muscles that move bones
Nerves connect to involuntary muscles and glands
Parasympathetic
Sympathetic
Fight/flight Speed up
Feed/breed Slow down
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PNS

• Divided into 2 parts
• Somatic nervous system (i.e. skeletal)
• Voluntary actions

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PNS

• Divided into 2 parts
• Somatic nervous system (i.e. skeletal)
• Voluntary actions
• Autonomic nervous system
• Non-voluntary actions
• Regulation of Internal organs
• Constriction of blood vessels
• Regulates bladder, stomach and heart

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Divisions of the PNS
Somatic
Autonomic
Nerves connect to involuntary muscles and glands
Nerves connect to muscles that move bones
Sympathetic
Parasympathetic
Feed/breed Slow down
Fight/flight Speed up
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PNS

• Autonomic nervous system
• Sympathetic
• Fight or flight
• Blushing, sweaty palms, heart racing

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PNS

• Autonomic nervous system
• Sympathetic
• Fight or flight
• Blushing, sweaty palms, heart racing
• Parasympathetic
• Relaxation
• Slows things down to conserve energy

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Divisions of the PNS
Somatic
Autonomic
Nerves connect to involuntary muscles and glands
Nerves connect to muscles that move bones
Sympathetic
Parasympathetic
Feed/breed Slow down
Fight/flight Speed up
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Divisions of the nervous system
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The brain Source of mind and self

• Divisions of the nervous system

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The brain Source of mind and self

• Divisions of the nervous system
• The neuron

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The brain Source of mind and self

• Divisions of the nervous system
• The neuron
• The mind

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The brain Source of mind and self

• Divisions of the nervous system
• The neuron
• The mind
• The brain

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The neuron

• Neurons the building blocks of the nervous system

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The neuron

• Neurons the building blocks of the nervous
  system
• Sensory neurons
• send signals from the senses, skin, muscles, and
  internal organs to the CNS

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The neuron

• Neurons the building blocks of the nervous
  system
• Sensory neurons
• send signals from the senses, skin, muscles, and
  internal organs to the CNS
• Motor neurons
• transmit commands from the CNS to the muscles,
  glands, and organs

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The neuron

• Neurons the building blocks of the nervous
  system
• Sensory neurons
• send signals from the senses, skin, muscles, and
  internal organs to the CNS
• Motor neurons
• transmit commands from the CNS to the muscles,
  glands, and organs
• Interneurons
• Located between sensory and motor neurons
• Most numerous type of neuron
• Function transmit signals from one part of the
  body to another

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The neuron

• Neurons the building blocks of the nervous
  system
• Sensory neurons
• send signals from the senses, skin, muscles, and
  internal organs to the CNS
• Motor neurons
• transmit commands from the CNS to the muscles,
  glands, and organs
• Interneurons
• Located between sensory and motor neurons
• Most numerous type of neuron
• Function transmit signals from one part of the
  body to another
• Glial cells
• Support and nutrition of neurons
• 10 X as many glial cells as neurons

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Different kinds of neurons

• Neurons vary in size and shape, depending on
  their location and function. More than 200 types
  have been identified in mammals.

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The structure of a neuron
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The structure of a neuron

• Dendrites
• Receive messages

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The structure of a neuron

• Dendrites
• Receive messages
• Cell body
• Biochemical machinery
• Sends signal

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The structure of a neuron

• Dendrites
• Receive messages
• Cell body
• Biochemical machinery
• Sends signal
• Axon
• Transmits messages
• Divides to axon terminals

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The structure of a neuron

• Dendrites
• Receive messages
• Cell body
• Biochemical machinery
• Sends signal
• Axon
• Transmits messages
• Divides to axon terminals
• Myelin sheath
• Insulation and speed off
• signal transfer

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The structure of a neuron

• Dendrites
• Receive messages
• Cell body
• Biochemical machinery
• Sends signal
• Axon
• Transmits messages
• Divides to axon terminals
• Myelin sheath
• Insulation and speed off
• signal transfer
• Nerves
• Made up off many neurons

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How neurons communicate

• Axon terminals
• release
• neurotransmitter

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How neurons communicate

• Axon terminals
• release
• neurotransmitter
• Enters synapse
• Binds to receptors
• that fit Lock key

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How neurons communicate

• Neurotransmitters
• Chemical messengers

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How neurons communicate

• Neurotransmitters
• Chemical messengers
• Transmit message over synapse
• Serotonin (associated with depression)
• Dopamine (associated with depression)

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How Neurons Communicate
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The End