Nervous System
The nervous system is divided into 2 main groups. What are these groups?
What are the central and peripheral nervous system?
Label A
What are the cell body?
An action potential is an ____________ message.
What is an electrical message?
Synapse is a ________________ message.
What is chemical?
The largest part of the brain.
What is the cerebrum?
Structures in the Central Nervous System (CNS)
What are the brain and spinal cord?
Label B
What are the nodes?
Action potentials always move in this direction.
What is from dendrites to axon terminal?
The chemical that jumps across the synapse to relay a message from one neuron to another
What is a neurotransmitter?
Primary functions of the cerebrum (must list minimum of 2)
What is voluntary movement and thinking?
Division of the peripheral nervous system responsible for automatic response such as heart beating, breathing and blinking.
What is the autonomic nervous system?
The primary function of the dendrites in a neuron.
What is to receive signals from other neurons?
The primary function of the myelin sheath.
What is to insulate the axon and help the action potential travel faster?
This structure in the axon terminal stores neurotransmitters before they are released into the synapse.
What are vesicles?
Primary function of the cerebellum.
What is coordination and balance?
Most specific division of the nervous system that is responsible for our fight or flight response.
What is the sympathetic nervous system?
Neurons that transmit information from the central nervous system to the rest of the body.
What are motor neurons?
What are Sodium (Na+) ions?
The dendrites of the receiving neuron contain this to make sure they are "catching" the correct neurotransmitters.
What are receptors?
What are controlling basic life functions like heart rate, breathing, and blood pressure?
This type of nervous system is responsible for voluntary movements sending signals from the brain to the muscles.
What is the somatic nervous system?
Neurons that connect the central nervous system and peripheral nervous system. i.e. neurons in the brain.
What are interneurons?
What happens after an action potential is sent ....
What is the potassium channels open, pushing potassium out of the cell?
The technical name for the gap between the two neurons.
What is the synaptic cleft?
The relay station of the brain. Directs sensory signals to the appropriate areas of the cerebrum.
What is the thalamus?