In humans, the stem cells from which all blood cells arise are found in the
A) peripheral circulation.
B) bone marrow.
C) lymphatic vessels.
D) lymph nodes.
E) spleen.

Question

Quizplus · Accepted Answer

Stem cells that give rise to all blood cells are primarily found in the bone marrow, which is a spongy tissue found in the cavities of bones. The bone marrow contains different types of stem cells, including hematopoietic stem cells, which give rise to all types of blood cells, such as red blood cells, white blood cells, and platelets. While stem cells may also be found in peripheral circulation, lymphatic vessels, lymph nodes, and spleen, these locations are not the primary sites for blood cell formation.

In Humans, the Stem Cells from Which All Blood Cells