Cerebral hypoxia is the condition in which the brain experiences a lack of oxygen. Any number of conditions can cause hypoxia, including stroke, carbon monoxide poisoning, heart dysfunction, drowning and injuries sustained at birth.

Dopamine is a neurotransmitter, which is a chemical that carries messages between cells. It’s involved in regulating many everyday activities, including memory, sleep, mood, learning, movement and behavior.

The chemical dopamine is produced naturally in the body and functions as a neurotransmitter, playing a role in the pleasure and reward pathway of the brain as well as in memory and motor control.

Broca’s aphasia is a type of aphasia, a condition resulting from a brain injury to areas responsible for language. Broca’s aphasia results from damage to the frontal lobe from occurrences such as stroke, brain injury or brain tumor. A sufferer of Broca’s aphasia may understand completely the sentences of others.

Epithelial cells are specialized cells which line many different kinds of tissue. Columnar epithelial cells are named because they are somewhat rectangular in shape and resemble a column in their orientation.

Your brain is a muscle. To keep it as fit as the rest of your body, you have to exercise it. Brain exercises can be active and physical or passive and mental. Stimulating one hemisphere can further refine your brain-building efforts.

Dopamine is a signaling chemical--a neurotransmitter--that is used by various cells in the body to communicate with one another. The primary places in the body where dopamine is used are in the central nervous system, peripheral nervous system and in the blood vessels.

Thirty-one pairs of nerves exit the spinal cord through openings in the vertebral column. These are spinal nerves. There are four main areas of the vertebral spine: the cervical spine, or neck; the thoracic spine, or chest; the lumbar spine, or lower back; and the sacrum, or tailbone.

Feeling dizzy after standing up or after exercise can be both frightening and debilitating but is not always the result of a serious condition. Dizziness caused by standing up is known as orthostatic hypotension or postural hypotension.

Dopamine is a naturally occurring chemical in the body that functions as a neurotransmitter and neurohormone. It primarily affects movement control, emotions and the pleasure and reward centers of the brain. It activates five dopamine receptors, D1 through D5, which are found throughout the brain and body.

Your brain relies on small molecules, called neurotransmitters, to facilitate signaling between brain cells, as well as transmission of signals to nerves throughout the body. One neurotransmitter important for signaling in the brain is dopamine.

Dopamine & norepinephrine are two critical neurotransmitters that regulate your mood and behavior. Both dopamine and norepinephrine are in tricyclic antidepressant medications which are used to treat depression.