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The Amazing Human Brain and Human Development
 
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Beginning with the Brain - The Amazing Human Brain and Human Development Quiz


 

1. The average adult brain weighs less than a pound.
The Correct Answer: False
Comment: Although the brain is quite miraculous, it requires a little more room to do its work. The average adult brain weighs about three pounds.


2. Human brains are programmed in a similar manner to animal brains.
The Correct Answer: True
Comment: Both animal and human brains are programmed to follow the same three basic directives.


3. The prime directives of the brain are survival, mating, and procreation, and protection and preparation of the young.
The Correct Answer: True
Comment: The prime directives of the brain (whether human or animal) are survival, mating, and procreation, and protection and preparation of the young.


4. For 99 percent of the time that we have been Homo sapiens, our ancestors have lived in small groups where their lives were characterized by cooperative farming and animal husbandry.
The Correct Answer: False
Comment: Cooperative farming and animal husbandry are actually a modern hallmark and would have been impossible for our ancestors.


5. Our sensory organs (eyes, ears, nose, tongue, skin) tell our brain both what is going on in the outside and the inside (physiological) worlds.
The Correct Answer: False
Comment: Our sensory organs tell our brains only what is going on in the outside (external) world. Our brains get information about the inside (physiological) worlds via a set of specialized neurons throughout the body.


6. Sensory information from the external environment (visual, auditory, tactile, olfactory, gustatory) and the internal environment (e.g., blood glucose, arterial pressure, carbon dioxide levels) enters the central nervous system at the highest level of the brain, the neocortex.
The Correct Answer: False
Comment: Sensory information from the external environment and the internal environment enters the central nervous system at the lower brain levels, the brainstem and midbrain. Remember, the lower brain levels are the more primitive ones.


7. At the heart of our survival neurobiology is the capacity to make and store internal representations of the external world. You know these internal representations as "memory."
The Correct Answer: True
Comment: As funny as it seems, "memory" is something the brain manufactures through neurobiology.


8. The brains of both babies and adults deal with their experiences in the same way. All human brains need to sense, process, and store all incoming patterns.
The Correct Answer: False
Comment: Remember that everything a baby sees is new information needing to be processed and stored for the first time. For adults, however, most experiences have only a small component that is "new" or unique. Typically, the majority of places, faces, words, sounds, smells, or tastes in any given moment are, for an adult, familiar -- the brain has sensed, processed, and stored these patterns before.


9. The brain senses, processes incoming signals, stores elements of received information and input, and then acts on the incoming information. These are the four key actions of the brain.
The Correct Answer: True
Comment: The brain senses, processes incoming signals, stores elements of received information and input, and then acts on the incoming information. These are the four key actions of the brain.


10. The brain actually physically changes in response to experiences that it has processed and stored.
The Correct Answer: True
Comment: All sensory signals (e.g., sound, sight, taste, touch) that the brain receives initiate, in turn, a cascade of cellular and molecular processes in the brain that alter neuronal neurochemistry, cytoarchitecture and, ultimately, brain structure and function.


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