Unit 2: Neuroscience

The function of the myelin sheath is.....

• the space between axon branch and the dendrite
• insulates and protects the axon and speeds up the message
• the action potential ends and neurotransmitters are resleased to cross the synapse
• carries the message away from the cell body

The synapse is best described as...

• the action potential ends and neurotransmitters are resleased to cross the synapse
• the space between two neurons
• carries the message away from the cell body
• insulates and protects the acon

The nucleus is.....

• the space between axon branch and the dendrite
• inside of the cell body
• the action potential ends and neurotransmitters are resleased to cross the synapse
• insulates and protects the axon

The function of the terminal branch is.....

• the space between axon branch and the dendrite
• the action potential ends and neurotransmitters are resleased to cross the synapse
• insulates and protects the axon
• carries the message away from the cell body

The central nervous system consists of:

• Somatic and autonomic nervous systems.
• Brain and spine.
• Sympathetic and parasympathetic.
• Endocrine system.

While Kevin was stopped in traffic, he looked in his rearview mirror to see someone speeding towards him. He knew he was going to get hit. In that brief moment, Kevin’s heartbeat was racing, his respiratory rate was significantly increased, and his pupils dilated. At that particular moment, Kevin’s __________ was in charge of his body.

• Somatic nervous system
• Sympathetic nervous system
• Parasympathetic nervous system
• Efferent nervous system

With the Latin meaning, “little brain,” the __________ is responsible in humans for our sense of balance including walking and dancing. It is located in the rear of the brain.

• Cerebral cortex
• Cerebellum
• Corpus callosum
• Hypothalamus

In reading seminar, students take a quiz to find out if they are “right brained” or “left brained”. The test gave two options to choose from for each item. On one item, Ryan chose, “I like to create organized lists and have things neat” over “I like disorder to my room.” On another item, Ryan chose, “I love English” over “I love Art.” Based on your knowledge about the brain, what can you infer about Ryan’s hemispheric dominance?

• Ryan only uses 10% of his brain like the rest of us.
• Ryan seems to be a left brain thinker.
• Ryan seems to be a right brain thinker.
• Ryan doesn’t seem to have a corpus callosum.

Jake, a varsity football player, was hit really hard in Friday’s game. He was knocked so hard, when he sat up his vision was blurring and he felt disoriented. Which lobe’s had temporary trouble processing Jake’s vision?

• Frontal lobe
• Occipital lobe
• Parietal lobe
• Temporal lobe

Doctors wanted to better understand what each brain part is responsible for what. Dr. Phillips decided to electrically stimulate the amygdala. Predict the most logical outcome?

• The subject would have increased hunger
• The subject would have intense emotions, like fear, to everyday objects
• The subject would have little control over their sleep/wake cycle
• The subject would have an increased heart rate, respiratory rate, etc.