The word cell was first used by English scientist Robert Hooke in 1665 to describe the cell walls visible in cork when seen through a microscope.In 1838 the German botanist M â¦ atthias Schleiden concluded that all plant tissues were made of cells.he word cell was first used by English scientist Robert Hooke in 1665 to describe the cell walls visible in cork when seen through a microscope.
Normal blood pressure. Congratulations on having blood pressure numbers that are within the normal (optimal) range of less than 120/80 mm Hg. Keep up the good work and stick with heart-healthy habits like following a balanced diet and getting regular exercise. Prehypertension (early stage high blood pressure)
Ideal Blood Pressure Levels. Traditionally, an ideal blood pressure is considered to be around 120/80 mm Hg (read 120 over 80), but many experts believe that 115/75 (115 over 75) is preferable.