Inside of Venus. Venus is a rocky planet, much like the Earth. Given its similar size, mass, and density to our planet, scientists think that its interior is much like Earth's own. In addition to a crust significantly older than Earth's constantly changing surface, Venus likely also sports a mantle and a core.
From Wikipedia, the free encyclopedia. The hematocrit (Ht or HCT, British English spelling haematocrit), also known as packed cell volume (PCV) or erythrocyte volume fraction (EVF), is the volume percentage (%) of red blood cells in blood. It is normally 45% for men and 40% for women.rom Wikipedia, the free encyclopedia. The hematocrit (Ht or HCT, British English spelling haematocrit), also known as packed cell volume (PCV) or erythrocyte volume fraction (EVF), is the volume percentage (%) of red blood cells in blood. It is normally 45% for men and 40% for women.
They do an anxious heart good. 3. If you think itâs SVT, get your heart rate down. Until you can get medical help there are a few things you can try to kick it back into a normal, safer, more-efficient rate. All of these stimulate your vagus nerve (which has direct connections to your heart) and help control the rhythm.hey do an anxious heart good. 3. If you think itâs SVT, get your heart rate down. Until you can get medical help there are a few things you can try to kick it back into a normal, safer, more-efficient rate. All of these stimulate your vagus nerve (which has direct connections to your heart) and help control the rhythm.