AP BIOLOGY

Detailed explanation-1: -In humans, hematopoiesis begins in the yolk sac and transitions into the liver temporarily before finally establishing definitive hematopoiesis in the bone marrow and thymus.

Detailed explanation-2: -In adults, hematopoiesis occurs in the bone marrow-the central cavity of your bones. Hematopoiesis starts with hematopoietic stem cells (HSCs), proliferative and multipotent cells that are located in specialized bone marrow regions called ‘niches’.

Detailed explanation-3: -Where does hematopoiesis occur? The most common site of blood cell production is the spongy tissue inside of your bones called bone marrow. Hematopoiesis that occurs in your bone marrow is called medullary hematopoiesis. Blood cells get made in your bone marrow and released into your bloodstream.

Detailed explanation-4: -Hematopoiesis is responsible for the formation of all blood cells from hematopoietic stem cells (HSC) in the bone marrow (BM). It is a highly regulated process, in order to adapt its cellular output to changing body requirements.

Detailed explanation-5: -Bone. The 2 primary types of bone are compact and spongy. Bones: Structure and Types marrow, the primary site of hematopoiesis, is found in the cavities of cancellous bones and the medullary canals of long bones.