TBP: Communication Systems, Nerves, and Hormones Flashcards
Network of cells that carry information throughout the body
Nervous system
Cells that make up the nervous system
Neurons
Every person has…
…80 - 100 billion neruons
Contains Nucleus that houses DNA
Soma
Keeps cell alive and functioning
Soma
Integrates multiple incoming signals
Soma
Receive signals from sensory receptors and other neurons
Dendrites
Carries electrochemical message through the neuron to send to the next neuron
Axon
State of Neuron when not firing
Resting potential
Charge is negative
Resting potential
Electrical Signal
Action potential
Charge is positve
Action potential
Mylein
Fatty “sheath” around some axons
Gets action potential to axon terminal faster
Mylein
Allows charge to jump between nodes
Mylein
Enlarged end of axon
Axon terminal
Specialized to communicate between cells
Axon terminal
Sack-like ends of axon
Vesicles
Contains neurotransmitters
Vesicles
Chemical Messenger
Neurotransmitter
Released into the synapse and can bind to receptors
Neurotransmiter
The gaps between adjacent neurons
Synapse
Synaptic gap
Synapse
Synapse
Synaptic gap
three dimensional proteins of dendrites that accept only certain neurotransmitters
Receptor cites
Excitatory
Increases the chance of receiving cell firing
Inhibitory
Decreases the chance of receiving cell firing
Neuron support system
Glial cells
Coordinate neurons
Glial cells
Deliver nutrients to neurons
Glial cells
Produces mylein
Glial cell
Behavior
Movement and thought
input
sense
output
movement
Sight, hearing, smell, taste, touch
5 traditional senses
Nociception, Equilibrioception, Proprioception & Kinesthesia, Temporal, Thermoception, Magnetoception
6 other senses