Cold and Flu Appointment Guide. Burning accompanied by redness around the outer ear and the skin around your ear can be indications of a serious infection that should prompt you to contact your health care provider right away.
You answered: Correct Answer: The average adult human brain has about 100 billion cells. Linked by synapses, each brain cell can connect to tens of thousands of other brain cells. It's still a mystery exactly how these connections work together to create all the marvels of our brains. Next.
The brain is composed of two major classes of cells: neurons and glia. In the mature brain, there are approximately 100 billion neurons and many more glia. Neurons communicate information throughout the brain by forming connections called synapses.