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The Human Body - Brain

Click on each clue for its answer.

  1. The three protective membranes that surround the brain.

    Meninges

  2. Part of the forebrain that forms a part of the limbic system and plays a part in long term memory and spatial navigation. Humans and other mammals have two of these, one in each side of the brain. The name derives from its curved shape in coronal sections of the brain, which resembles a seahorse.

    Hippocampus

  3. This part, that sounds like it belongs to a plant, regulates vital functions like heartbeat and respiration.

    Brain stem

  4. The brain floats in this 'liquid' within the skull that provides energy for the brain functional and guards against infection.

    CSF or Cerebrospinal fluid

  5. A term for a set of brain structures including the hippocampus and amygdala that support a variety of functions including emotion, behavior and long term memory and events that involve the 'primitive brain.'

    Limbic system

  6. Though it requires 20 percent of the body's blood, the brain accounts for only this much percentage of the body's weight.

    2 percent

  7. The outer layer of the cerebrum, part of which is the forebrain. Takes its name from the Latin for "bark."

    Cortex

  8. Named after an English physician, this circle of arteries encircle the base of the brain and supply blood.

    Circle of Willis

  9. The lower portion of the brainstem that deals with autonomic functions whose cardiac center is responsible for controlling the heart rate.

    Medulla Oblongata

  10. This is the artery that supplies the head (and hence the brain) and neck with oxygenated blood.

    Common Carotid Artery

  11. It is responsible for balance and posture and is the second largest part of the brain.

    Cerebellum

  12. A small endocrine gland that produces melatonin, a hormone that may weakly modulate wake/sleep patterns.

    Pineal gland

  13. Non-neuronal cells that provide support and nutrition and participate in signal transmission in the nervous system and they outnumber neurons by about 10 to 1.

    Glia

  14. The 12 pairs of these nerves connect directly to the brain, rather than via the spinal cord and include the Optic and the Olfactory nerves.

    Cranial nerves

  15. Present in the center of the brain, it acts as an information relay station and conveys signals to the cerebral cortex.

    Thalamus

  16. Called the master gland, it controls many other glands and sits at the base of the brain.

    Pituitary

  17. It is situated under the thalamus and regulates body temperature and the controls the autonomic nervous system.

    Hypothalamus

  18. This is the largest part of the brain, which has a heavily folded surface. Has connections to all parts of the body.

    Cerebrum