communication, homeostasis and energy
暂无描述。系统推荐的高质量记忆内容，适合每天坚持背诵学习。
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what is the central nervous system composed of?
brain spinal cord
what does the central nervous system contain?
relay neurons
what is the peripheral nervous system composed of?
cranial nerves spinal nerves peripheral nerves
what does the peripheral nervous system contain?
sensory neurons motor neurons
where is the cell body located in a motor neuron?
on the end of the axon on the left side
what is the cell body of a neuron called?
soma
what is the sequence of the nervous system?
• stimulus • receptor cells • sensory neurons • CNS (relay neurons) • motor neuron • effector • response
what is the peripheral nervous system divided into?
sensory division motor division
what is the sensory division made up of?
sensory neurons
what does the sensory division do?
signals from receptors to CNS
what is the motor division made up of?
motor neurons
what does the motor division do?
signals from CNS to receptors
what is the motor division divided into?
autonomic nervous system somatic nervous sytem
what does the autonomic nervous system do?
controls involuntary responses
what does the somatic nervous system do?
controls voluntary movement
what is the autonomic nervous system divided into?
sympathetic division parasympathetic division
what does the sympathetic division do?
mobilises body systems ‘fight or flight’ responses
what does the parasympathetic division do?
conserves energy ‘rest and digest’ responses
what is the stimulus pathway?
• stimulus • receptor • sensory neuron
what are the types of stimulus?
physical (temp/press/light) chemical
what is a biological transducer?
receptors converts stimuli into electrical signals
what is mechanical pressure?
pressure caused by a physical force
what is the pacinian corpuscle?
receptor that responds to mechanical pressure transduce mechanical energy of the stimulus into a generator potential
what are photoreceptors?
respond to light found in the eye