BIOPSYCHOLOGY
Human Nervous System
Peripheral Nervous System Central Nervous System
Autonomic Nervous Somatic Nervous Brain Spinal Cord
System System It is the control centre Most of the info
Monitors and controls Consists of sensory for the nervous system travelling to and from
the activities of the nerves, that carry info and many of the body’s the brain should do so
internal organs and is from the environment other systems. it is a via the spinal cord. it is
involved in to the CNS, and motor complex info also capable of basic
homeostasis function. nerves that carry processor. info processing in its
instructions from the own right.
CNS to skeletal
muscles.
The Nervous System is a highly
organised collection of neurons that
convey information around the
organism and its environment.
Sympathetic Nervous Parasympathetic
System Nervous System
Consists of a series of Consists of a series of
connections from the connections between the
spinal cord to the major brain and the internal
internal organs. It organs. It is active most
becomes more active of the time, controlling
when we are doing homeostasis functions
something that requires and ensuring we
the expenditure of conceive energy. It
energy. It’s involved in became less active when
the fight or flight the SANS becomes more
response that occurs active.
when an organism is
threatened.
Glial Cells (grey fatty cells in the brain)
- They provide support for the neurones to grow in and around.
- They produce myelin to coat axons.
- They clean up waste productions and dead neurons and influence information processing.
- During prenatal development, they influence the generation of new neurons.
- The brain is made up of around 10% neurons and 90% glial cells.
, Neurons Axon Terminal Button
The axon carries electrical
impulses from the cell
Cell Body body to the axon terminal
Also known as the Nodes of button, which links to the
Soma. It is the control Ranvier next neuron or the
centre of the neuron Signals jump receptors on muscles or
that contains genetic between them. organs.
material.
Myelin Sheath
Dendrite It is the insulation layer around
It receives signals from Nucleus the axon, which allows quicker
sensory receptors or other Contains the genetic transmission.
neurons to the cell body. material in the form of
chromosomes.
Sensory Neuron Motor Neuron Relay Neuron
- Carry info from sensory - Carry info from CNS to muscle and - Neither sensory or motor,
receptors to CNS through the glands. these connect neurons to other
somatic system. - Motor neurons form synapses with neurons.
- Some impulses reach the brain muscles and control their - Allow sensory and motor
and are translated into contractions. neurons to communicate with
sensation. - The strength of contraction each other.
- Some nerves terminate in the depends on the rate of firing of the - Relay neurons are bipolar
spinal cord, allowing relax axons of motor neurone. (transmit and receive
action to occur quickly. - Muscle relaxation is caused by the messages).
- They are unipolar (transmit inhabitation of the motor neuron.
messages only). - They are bipolar (transmit and
receive messages).
Human Nervous System
Peripheral Nervous System Central Nervous System
Autonomic Nervous Somatic Nervous Brain Spinal Cord
System System It is the control centre Most of the info
Monitors and controls Consists of sensory for the nervous system travelling to and from
the activities of the nerves, that carry info and many of the body’s the brain should do so
internal organs and is from the environment other systems. it is a via the spinal cord. it is
involved in to the CNS, and motor complex info also capable of basic
homeostasis function. nerves that carry processor. info processing in its
instructions from the own right.
CNS to skeletal
muscles.
The Nervous System is a highly
organised collection of neurons that
convey information around the
organism and its environment.
Sympathetic Nervous Parasympathetic
System Nervous System
Consists of a series of Consists of a series of
connections from the connections between the
spinal cord to the major brain and the internal
internal organs. It organs. It is active most
becomes more active of the time, controlling
when we are doing homeostasis functions
something that requires and ensuring we
the expenditure of conceive energy. It
energy. It’s involved in became less active when
the fight or flight the SANS becomes more
response that occurs active.
when an organism is
threatened.
Glial Cells (grey fatty cells in the brain)
- They provide support for the neurones to grow in and around.
- They produce myelin to coat axons.
- They clean up waste productions and dead neurons and influence information processing.
- During prenatal development, they influence the generation of new neurons.
- The brain is made up of around 10% neurons and 90% glial cells.
, Neurons Axon Terminal Button
The axon carries electrical
impulses from the cell
Cell Body body to the axon terminal
Also known as the Nodes of button, which links to the
Soma. It is the control Ranvier next neuron or the
centre of the neuron Signals jump receptors on muscles or
that contains genetic between them. organs.
material.
Myelin Sheath
Dendrite It is the insulation layer around
It receives signals from Nucleus the axon, which allows quicker
sensory receptors or other Contains the genetic transmission.
neurons to the cell body. material in the form of
chromosomes.
Sensory Neuron Motor Neuron Relay Neuron
- Carry info from sensory - Carry info from CNS to muscle and - Neither sensory or motor,
receptors to CNS through the glands. these connect neurons to other
somatic system. - Motor neurons form synapses with neurons.
- Some impulses reach the brain muscles and control their - Allow sensory and motor
and are translated into contractions. neurons to communicate with
sensation. - The strength of contraction each other.
- Some nerves terminate in the depends on the rate of firing of the - Relay neurons are bipolar
spinal cord, allowing relax axons of motor neurone. (transmit and receive
action to occur quickly. - Muscle relaxation is caused by the messages).
- They are unipolar (transmit inhabitation of the motor neuron.
messages only). - They are bipolar (transmit and
receive messages).
