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Nervous System and the Senses
"This quiz is intended to test comprehension of the fundamentals of neurobiology. I hope you all enjoy this quiz and learn something along the way. This is my first quiz so feedback is welcome"
15 Points Per Correct Answer - No time limit
Ok, we will start with a question regarding action potentials first. What accounts for the rising phase of an action potential in a typical neuron?
Influx of sodium (Na+) ions into the neuron
Sodium (Na+) leaving the neuron
Influx of potassium (K+) ions into the neuron
Neither sodium nor potassium are involved in neuronal action potentials
There are many severe neurological disorders out there. What disease would you be suffering from if I were to demyelinate your axons?
With regards to the axons of dorsal column medial-lemniscus pathway for sending somatic information to the brain: where do these axons cross the midline?
At the level of the brain stem
These axons do not cross the midline, they remain ipsilateral (on the same side).
They cross the midline immediately.
At the level of the spinal cord.
If I were to damage your Edinger-Westphal nucleus what would you have trouble doing?
Smelling citrus odors
Seeing the color red
Moving the muscles in your iris
Lower motor neurons have an interesting distribution within the ventral horn of the spinal cord. What muscles would I damage if I were to destroy the lateral most part of the ventral horn?
Motor neurons innervating proximal muscles
None of the above, motor neurons are located in the dorsal horn not the ventral horn
Motor neurons that innervate your deltoid muscle
Motor neurons innervating distal muscles
The output of the basal ganglia is...
A mix of excitatory and inhibitory
The basal ganglia only receives input it does not send output to the rest of the body
This disease of the basal ganglia is inherited and is caused by a glutamine repeat in a particular gene
Now on to a little brain development... We all start out as a tube within a tube composed of three germ layers which give rise to all of the structures and tissues. What would be the result on the development of the nervous system if I removed the mesoderm layer?
The nervous system would develop normally
The nervous system would not develop
The brain would form but the spine won't
The brain will develop outside of the head
Serious diseases can develop when the neural tube fails to close properly during development. Which of the following are diseases that result from an incomplete closure of the neural tube?
Because I enjoy developmental biology I will give you one more on neuro devo...Which product should a pregnant woman never use because of its link to an increased risk of birth defects?
Foods high in starch
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Compiled Jun 28 12