You searched for: “concussion
concussion (kuhn KUHSH uhn) (s) (noun), concussions (pl)
1. An injury to the brain, often resulting from a blow to the head, which can cause temporary disorientation, memory loss, or unconsciousness: The ice hockey leagues are studying changes in helmet requirements because of so many concussions that the players have been experiencing.
2. A damage to an organ of the body which is usually caused by a violent blow, a shaking or some suddenly violent jolting: The automobile accident caused several internal concussions to Mrs. Jackson and so she was unable to continue driving her car anymore.
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Word Entries containing the term: “concussion
concussion of the brain
A concussion is not a bruise to the brain caused by hitting a hard surface. In fact, no physical swelling or bleeding is usually seen on radiological scans.

Causes of some brain concussions

    A brain concussion can cause immediate and usually temporary impairment of brain function such as of thinking, vision, equilibrium and consciousness

  • Impact:
  • The concussion occurs from impact when the head accelerates rapidly and then is stopped, or from spinning when the head is spun rapidly and then is stopped.

    Impact to the brain can occur when the head slams into a hard surface.

    The skull is stopped by the hard surface but the brain, floating in cerebrospinal fluid (CSF), can still move and is shaken.

  • Spinning:
  • Spinning of the brain can occur when a blow causes the head to snap rapidly.

    The skull then stops spinning but the brain, floating in cerebrospinal fluid (CSF), can still move and is damaged.

  • Violent trauma:
  • Violent trauma, whether it be from shaking or spinning, causes the brain cells to become depolarized and fire all their neurotransmitters at once in an abrupt cascade, flooding the brain with chemicals; there is a sudden flood of ions (including sodium, potassium, and calcium, and deadening receptors in the brain that are associated with learning and memory.

This entry is located in the following unit: cuss- (page 1)