Review of this week: Neurons use electrochemical energy to create action potentials that travel to the end of the neuron and release neurotransmitters. Neurotransmitters regulate behavior and mood. The nervous system is categorized into two main categories: the central nervous system and the peripheral nervous system. The endocrine system uses glands to release hormones into the bloodstream. The brain is divided into three main regions: the hindbrain, midbrain, forebrain. Hindbrain: basic and life-sustaining functions. Midbrain: connects lower structures of hindbrain with the structures of the forebrain. Forebrain: regulates high-order processes (thinking and emotional control). The cerebral cortex is a thin layer of wrinkled tissue that covers the outside of the brain and is responsible for cognition, decision making, and language capabilities. The brain is divided into two hemispheres: the right hemisphere governs the left side of the body and the left hemisphere governs the right.
What I found the most interesting this week: Endorphins are released in the central nervous system during times of stress (such as physical exertion) to protect us from pain. These endorphins block pain messages in the central nervous system, and we feel less pain and a mild sense of euphoria when released.
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| Brain Lobes |
Accomplished this week: Read the chapter, two discussion posts, C&R paper, review crossword, 3 Tweets, a quiz, and a blog post. :)
Next Week: How Do We Sense and Perceive Our World?
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