Prokaryotes are cells without a distinct nucleus.They have genetic material but that material is not enclosed within a membrane. Prokaryotes include bacteria and cyanophytes. The genetic material is a single circular DNA strand and is located within the cytoplasm.
Healthcare providers consider a normal blood pressure reading to be 120/80 or below. However, normal blood pressure can actually fall anywhere in a range from 90/60 to 120/80 -- it's not just one set number. The top number of the blood pressure reading is called the systolic pressure.
Each time your nurse or physician takes your blood pressure, they are recording two measurements: your systolic pressure and your diastolic pressure. A normal resting blood pressure reading is 120/80. Your systolic pressure (the first and highest number), is the pressure or force the heart places on the walls of your blood vessels as it is working/pumping with each heartbeat.