Which of these nerves does not arise from the cervical plexus? median nerve greater auricular nerve phrenic nerve supraclavicular nerve?

Nucleic acid certain protein cell membranes certain carbohydrates

The image below shows a common blood pressure gauge. what does this device do? a. measures the level of oxygen present in the blood b. measures the pressure of blood when the lungs expand and compress c. measures the electrical activity of the heart d. measures the pressure of blood when the heart contracts and relaxes

What processes take place before the mature mrna exits the nucleus?