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 located in the head, usually close to the sensory organs for senses such as vision. The brain is the most complex organ in a vertebrate's body. In a human, the cerebral cortex contains approximately 15â33 billion neurons, each connected by synapses to several thousand other neurons.