Parts of a Neuron
What is known as the cell body?
What is the Soma?
A sensory neuron on the back of your hand is triggered by a spider walking on your skin. Which end of the neuron is triggered first - dendrite or axon terminal?
What is dendrite?
1. ___________ neurons bring signals into the CNS. 2. ___________ neurons carry signals out of the CNS.
1. Sensory
2. Motor
The gap or space between two nerve cells where neurotransmitters are released.
What is the synapse?
What movie is "Hakuna Matata" from?
Lion King
This part of a neuron receives a chemical stimulus from the synapse and carries the impulse toward the cell body.
Dendrite
Once a dendrite is triggered, ion channels open and ions flood in toward the soma/cell body. These ions have a _______________ charge.
What is positive?
Which part of the nervous system consists of the brain and the spinal cord?
What is the CNS?
The chemicals that transmit messages across the synapse.
What are neurotransmitters?
Which fictional city is the home of Batman?
Gotham City
This dense lipid layer insulates the axon & makes the axon look gray.
What is the myelin sheath?
When positive ions flow into the soma, the overall charge inside increases. Once the positive charge reaches a certain threshold, an ________________ is triggered.
What is an action potential?
Which part of your nervous system consists of the sensory neurons and motor neurons that are outside of your brain and spinal cord?
What is the PNS?
These break down the neurotransmitters after the message is sent to stop the synapse from being permanently on.
What are enzymes?
What day is Star Wars day?
May 4th
These gaps or nodes in the myelin sheath help propagate an action potential along the axon.
What are the Nodes of Ranvier?
This positive impulse travels from soma to axon to axon terminal & triggers the release of neurotransmitters.
What is an action potential?
The neurons found in the human nervous system can be divided into three classes:
What are sensory neurons, motor neurons, and interneurons?
This rule states that the positive stimulus from the dendrite is strong enough to start an action potential or nothing happens.
What is the "All or Nothing Rule"?
Who painted the Mona Lisa?
Leonardo DaVinci
These contain neurotransmitters in the axon terminal.
What are vesicles?
The action potential reaches the vesicles in the axon terminal which triggers the release of their neurotransmitters into the ____________________.
What is the synapse or synaptic gap?
What are the 2 main parts of the nervous system?
What is the Central Nervous System (CNS) and the Peripheral Nervous System (PNS)?
These sites receive the chemical messages (a.k.a. neurotransmitters) at the end of the dendrites.
What are receptor sites?
Who is the main character of the Lord of the Rings?
Frodo Baggins