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 made out of cells. It is a long and very distinguished group of cellsâabout 550 million years or so old. These cells have a small mass. Our brain is about one-and-a-half liters, or three pounds, but it has 1010 cells, which is a huge number of cells. Ten billion cells.