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Parts of the Central Nervous System
Parts of the Peripheral Nervous System
Signal Paths
Parts of the Neuron
Miscellaneous
100
What part of the nervous system is responsible for processing sensory input, deciding on a response, and then sending output to the body?
The brain
100
Which type of neuron is responsible for controlling skeletal muscles?
Motor neurons
100
You can't take it any more, so you punch the wall. What is the sequence of types of neurons that fire in this scenario?
Brain => Spinal cord => Motor
100
Which part of the neuron contains the nucleus, and most of the other organelles?
The cell body
100
In the brain, a typical neuron is connected to a) 1 other neuron b) 10 other neurons c) 1000 other neurons d) 1000000 other neurons
c) 1000 other neurons!!!
200
What is the most ancient part of the brain, responsible for controlling basic functions like breathing, heart rate, and blood pressure?
The hindbrain
200
Which type of neuron would be used to tell your brain that someone is tapping you on the shoulder?
Sensory neuron
200
A cold raindrop falls on your arm, causing you to experience "coldness". What is the sequence of types of neurons that fire in this scenario?
Sensory => Spinal cord => Brain
200
Which part of the neuron is responsible for transmitting the action potential over long distances?
The axon
200
True or false? The action potential travels from the axon terminals to the cell body.
False (it's the other way around)
300
What is the most recently evolved part of the brain, responsible for functions like problem-solving and emotions?
The forebrain (or the cerebral cortex)
300
Which type of neuron would be responsible for causing your kidneys to release adrenaline when something scary jumps out at you?
Sympathetic neuron
300
You feel pain from your hand as you accidentally give yourself a paper cut, and as a result you decide to use your diaphragm and throat muscles to shout a naughty word. What is the sequence of types of neurons that fire in this scenario?
Sensory => Spinal cord => Brain => Spinal cord => Motor
300
Which part of the neuron is responsible for holding neurotransmitter until it's ready to be released into the synapse?
Vesicles
300
What protects the brain from toxins and pathogens that are in the bloodstream?
The blood-brain barrier
400
Which part of the nervous system is protected by a stack of tubular bones?
The spinal cord
400
Which type of neuron is responsible for reducing your heart rate when you recover from a scary prank?
A parasympathetic neuron
400
You feel a mouse run across your foot. This being one of your greatest fears, your body goes into fight or flight mode.
Sensory => Spinal cord => Brain => Spinal cord => Sympathetic
400
Which part of the neuron is responsible for receiving signals from other neurons?
Dendrites
400
What effect does the parasympathetic nervous system have when it signals the muscles surrounding the bronchi of the lungs?
Get smaller, reduce to original size
500
How many neurons are there estimated to be in the human brain?
About 85 billion.
500
Name all the types of neurons that carry signals away from the brain and spinal cord?
Sensory, sympathetic, parasympathetic
500
You accidentally put your hand on a hot burner. You jerk your hand away before you even realize what you've done.
This is a reflex arc: Sensory ( => Spinal cord ) => Motor
500
What is responsible for speeding up the conduction of the action potential by skipping over large parts of the axon?
The myelin sheath (a.k.a. schwann cells)
500
Why does Benadryl make you sleepy, but not Claritin?
Because Claritin can't cross the blood-brain barrier, but Benadryl can.