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The Human Brain
Transcript of The Human Brain
it is an oblong organ weighing appx. 3 pounds
consists of 78% water 10% fat 8% protein
Cerebral cortex or Neocortex
outer shell of the brain consists of 4 lobes
1. Frontal Lobe
These are brain cells
Neurons are made up of
Frontal Lobe –In charge of higher order functions, the front part of the brain that consists of your thinking memory (short term and long term), along with reasoning, planning, worrying, and behavior control.
dendrites - carry nerve impulses
towards the cell body
cell body - controls the cells
synapse - meeting place between
an axon and another cell
axon - impulses travel along axons to other cells
There are about 100 billion neurons in the human brain, the same number of stars in our galaxy.
The brain can stay alive for 4 to 6 minutes without oxygen. After that cells begin die.
More electrical impulses are generated in one day by a single human brain than by all the telephones in the world.
Albert Einsteins brain weighed 1,230 grams (2.71 lbs), significantly less then the human average of 1,300g to 1,400g (3 lbs).
Located on the side of the brain the Temporal Lobe is involved in sound sensation.
The Neocortex is divided into two hemispheres, right and left. The right side of the brain controls the left side of the body and vice versa. Also the hemispheres are divided in terms of what kind of thought they process or produce. The right being more concerned with the artistic, spatial and musical. While the left is more concerned with the more organized, colder, linear, rational and verbal aspects.
it controls the muscles
of speech production
On the left hemisphere is the Wernicke's Area (helps decipher and understand spoken language)
Parietal Lobe - Located on the top of the head
The parietal lobe controls things such as kinesthetic/body awareness
calculates the speed and location of objects
Also located in the parietal lobe is the somatosensory cortex:
it receives information from your skin and internal organs when they are touched
The Occipital lobe is responsible for interpreting the visual scene
Located in the frontal lobe