what is the nervous system divided into
Central Nervous System
Peripheral Nervous System
what is the central nervous system composed of and contains what type of neuron
- the brain and spinal cord
- relay neuron
what is the peripheral nervous system composed of and contains what type of neuron
- made up of neurons that connect the CNS to the rest of the body
- sensory and motor neurons
what are the peripheral nervous system divided into
somatic nervous system
autonomic nervous system
what is the somatic nervous system
system that controls the conscious activities
what is the autonomic nervous system
system that controls unconscious activities e.g. breathing
furthermore the autonomic system has two further divisions what are they
sympathetic nervous system
parasympathetic nervous system
what is the sympathetic nervous system
- system that gets the body ready for action (fight or flight)
- these release noradrenaline (neurotransmitter)
what is the parasympathetic nervous system
- calms the body down (rest and digest)
- releases acetylcholine (neurotransmitter)
what are neurons
specialised cells that conduct action potential (electrical impulses) within the nervous system
what does a nervous system reaction involve
stimulus (change in environment)
receptor (sense organ which detects he change
coordinator (e.g. CNS , responsible to form the response)
effector (the thing that produces the response)
what is the pathway of a nerve impulse
stimulus -> receptor -> ~CNS -> effector-> response
red light eye brain muscle brake
how does the receptor send the action potential to the CNS
thru a sensory neruon
what do sensory receptors act as
transducers (converts the energy of a stimulus to electrical energy)
how does the motor neuron send the action potential to the effector
thru a motor neuron
what is a bundle of nerves known as
nerve
what are the three types of neuron
sensory
relay
motor
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Module 2 Section 1 - Organelles Working Together10
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Module 2 Section 1 - Cell Ultrastructure41
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Module 2 Section 1 - Prokaryotic Cells16
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Module 2 Section 1 - Microscopy49
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Module 2 Section 2 - Proteins38
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Module 2 Section 2 - Carbohydrates31
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Module 2 Section 2 - Water29
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Module 2 Section 2 - Lipids35
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Module 2 Section 2 - Inorganic Ions26
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Module 2 Section 2 - Biochemical Tests for Molecules42
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Module 2 Section 3 - Nucelotides35
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Module 2 Section 3 - Polynucleotides And DNA29
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Module 2 Section 3 - Genes and Protein Syntheisis29
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Module 2 Section 3 - Transcription and Translation22
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Module 2 Section 4 - Action of Enzymes35
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Module 2 Section 4 - Factors Affecting Enzyme Activity21
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Module 2 Section 4 - Cofactors and Enzyme Inhibition35
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Module 2 Section 5 - Cell Membranes56
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Module 2 Section 5 - Transport Across Cell Membranes54
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Module 2 : Section 6 - Tissue, Organs and Systems14
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Module 2 : Section 6 - Sexual Reproduction and Meiosis20
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Module 2 : Section 6 - Stem Cells and Differentiation21
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Module 2 Section 6 - The Cell Cycle and Mitosis36
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Module 3 Section 1 - Specialised Exchange Surfaces22
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Module 3 Section 1 - The Gaseous Exchange System In Mammals38
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Module 3 Sedtion 1 - Ventilation In Mammals27
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Module 3 Section 1 - Ventilation In Fish and Insects24
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Module 3 Section 2 - Circulatory Systems32
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Module 3 Section 2 - Blood Vessels60
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Module 3 Section 2 : Heart Activity29
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Module 3 Section 2 : Haemoglobin35
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Module 3 Section 2 - The Heart14
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Module 3 : Section 3 - Xylem and Phloem19
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Module 3 : Section 3 - Water Transport30
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Module 3 : Section 3 - Translocation19
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Module 3 : Section 3 - Transpiration16
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Module 4 : Section 1 - Pathogens and Communicable Diseases38
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Module 4 : Section 3 - Evolution of Classification Systems0
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Module 4 : Section 3 - Variation26
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Module 4 : Section 3 - Classification Basics44
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Module 4 : Section 3 - Adaptations18
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Module 4 : Section 3 - The Theory of Evolution20
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Module 4 : Section 1 - Defence Against Pathogens17
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Module 4 : Section 2 - Studying Biodiversity23
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Module 4 : Section 1 - The Immune System36
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Module 4 : Section 1 - Immunity and Vaccinations21
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Module 4 : Section 1 - Antibiotics And Other Medicines12
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The Nervous System18
