10. Nervous System
No description yet. This curated deck is ready for daily study.
Card preview (16)
What is the role of the human nervous system?
Manage complex behaviors and process sensory information
What are the two main components of the nervous system?
• Central nervous system • Peripheral nervous system
Identify Structure that transmit information between the central nervous system and various regions of the body
Nerve
Identify Specialized nerve cell in the nervous system that receives and transmits messages from senses to brain and brain to muscles.
Neuron
What are the the main parts of a neuron? You need to know how to label the different parts.
• Cell body • Dendrites • Axon • Axon terminals The synapse is at the end of the dendrite.
Describe neuron’s role (3 parts)
• Capture message/stimuli. • Transform stimuli into nerve impulses. • Transmit nerve impulses from axon to axon terminal.
What is a stimulus?
Anything that can be perceived by a living organism and that can trigger a reaction. ex: sound, light, hormones
Identify Electrical signal transmitted by a neuron
Nerve impulse
Neurons can be stimulated: they reacts to a stimulus by changing it into an _____
nerve impulse (an electric signal).
Fill the blanks by matching the neuron parts with their role. • ____ receives a stimuli and transforms them into nerve impulses. • Nerve impulses are transmitted along ____ to _____ • The end of the axon releases chemicals called neurotransmitters that diffuse across the ____ and touch the dendrite of another cell to pass messages along. word bank: axon, axon terminals, dentrite, synapse
Dendrite axons axon terminals synapse
What are neurotransmitters?
Chemical substances secreted by axon terminals into the synapse that enable the transmission of nerve impulses.
Identify Transition zone between two neurons that allows a nerve impulse to be transmitted
Synapse
What is the speed at which nerve impulses can travel?
Up to 430 km/h.
Identify Group of neurons connected together and covered by protective tissue and blood vessel responsible for the tranmission of nerve impulse from one part of the body to another.
Nerve
Fill in the blank: A neuron can only survive a few minutes without _______.
[oxygen]
True or False: Neurons can be replaced if destroyed.
False.