Not all spider bites are bad, in fact, most are not, but there are a few spiders that when they bite, they do incredible damage like the brown recluse below!pider Identification. Spiders can be found living in almost every habitat on earth. The only place that spiders are not found is only the harshest environments on Earth, the North and South poles, the highest mountains and the ocean. Some spiders have been found near the ocean, living in coral near the ocean edge.
A milliliter of blood contains about 5 billion red blood cells, each of which is packed with about 300 million hemoglobin molecules! A milliliter of blood contains about 5 billion red blood cells, each of which is packed with about 300 million hemoglobin molecules!
Measurements needed to calculate RBC indices are the red blood cell count, hemoglobin, and hematocrit. The hematocrit is the percentage of blood by volume that is occupied by the red cells.The three main RBC indices are: 1  Mean corpuscular volume (MCV).2  The average size of the red blood cells expressed in femtoliters (fl). 3  MCV is calculated by dividing the hematocrit (as percent) by the RBC count in millions per microliter of blood, then multiplying by 10.easurements needed to calculate RBC indices are the red blood cell count, hemoglobin, and hematocrit. The hematocrit is the percentage of blood by volume that is occupied by the red cells.