For the Following Questions, Refer to the Graph of an Action

question 23

Multiple Choice

For the following questions, refer to the graph of an action potential.

-Action potentials are normally carried in only one direction: from the axon hillock toward the axon terminals. If you experimentally depolarize the middle of the axon to threshold, using an electronic probe, then

• A) no action potential will be initiated.
• B) an action potential will be initiated and proceed only in the normal direction toward the axon terminal.
• C) an action potential will be initiated and proceed only back toward the axon hillock.
• D) two action potentials will be initiated, one going toward the axon terminal and one going back toward the hillock.
• E) an action potential will be initiated, but it will die out before it reaches the axon terminal.

Identify the roles of hormones and enzymes in digestion.

Recognize diseases related to nutrient deficiencies and the importance of a balanced diet.

Describe the process and significance of fat digestion in the human body.

Understand dietary recommendations and their impact on health.

---

Definitions:

Phineas Gage

A famous case study in the field of psychology and neuroscience, involving a man who survived a severe brain injury that changed his personality, providing early evidence of the brain's role in personality and behavior.

Neurogenesis

The process of generating new neurons in the brain, which continues to occur in certain parts of the adult brain.

New Neurons

Newly formed nerve cells that have been generated in the brain, a process known as neurogenesis.

Split-Brain Patient

An individual whose corpus callosum has been surgically severed, separating the brain's two hemispheres to treat severe epilepsy.