90
White blood cells (WBCs) have varying lifespans depending on their type, but they typically take about 3 to 7 days to reproduce in response to infections or immune challenges. Hematopoietic stem cells in the bone marrow continuously produce new WBCs, which enter circulation as needed. The overall production rate can be influenced by factors such as infection, inflammation, and overall health.
40 to 50
Human red blood cells function for an average of 120 days, or about 4 months. After this the red blood cells are too damaged to carry oxygen effectively and are broken down.
red blood cells. but there are also many white blood cells. not as many though.
If you add more the WBC's than RBCs then you would have a hypersensitivity reaction (allergic response). A high white cell count should not occur unless you have a Bacterial, parasitic or viral infection. You need lots of red blood cells to carry the haemoglobin which carries oxygen around the body. Unlike the white blood cells, which only operate when there is an antigenic stimulus, red blood cells are needed constantly. Why cells travel around in small numbers " on patrol " so to speak and recruit further numbers and divide to make more white blood cells when required
A normal healthy person has about 6 liters of blood and makes 25 -30 ml every day so would make a complete new pool of blood ever 200 or so days. You can make the blood faster if needed. Within the "blood" total the red blood cells last about 120 days, platelets about a week and white blood cells a few hours to days for the most common types (but years for some types).
Platelets typically remain in circulation for about 7 to 10 days. After this period, they are removed from the bloodstream by the spleen and liver. The body continuously produces new platelets in the bone marrow to maintain adequate levels for blood clotting and other functions.
the process to make red blood cells is called erythropoiesis. they are produced in bone marrow and originate from hemotopoietic stem cells. this differentiation is stimulated by hormone erythropoietin. the process takes about 7 days and red blood cells last between 100 and 120 days when they are then recycled by the body. the process of making white blood cells also utilizes hemotopoietic stem cells. there are many different white blood cells such as neutrophils, basophils, monocytes, lymphocytes and eosinophils. they all perform different functions in immunity.
The body has a double circulation the blood passes through the heart twice in one complete circuit.
there are 15 billion blood cells in your body
there are 15 billion blood cells in your body
No , there are many types of blood cells .