Multiple Choice
In the context of bone marrow anatomy, which body system is responsible for producing red blood cells (erythrocytes) through hematopoiesis?
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6. Bones & Skeletal Tissue
Gross Anatomy of Bone: Bone Marrow
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In the context of gross bone anatomy and bone marrow, where are most blood cells produced in adults?
A
Compact (cortical) bone matrix
B
Red bone marrow
C
Yellow bone marrow
D
Periosteum
Verified step by step guidance1
Step 1: Understand the types of bone tissue and their functions. Compact (cortical) bone is dense and forms the outer layer of bones, providing strength and protection, but it is not the primary site of blood cell production.
Step 2: Recognize the role of bone marrow in blood cell production. Bone marrow is a soft tissue found within the cavities of bones and is responsible for hematopoiesis, the process of producing blood cells.
Step 3: Differentiate between red and yellow bone marrow. Red bone marrow contains hematopoietic stem cells that actively produce red blood cells, white blood cells, and platelets, whereas yellow bone marrow primarily stores fat and is less involved in blood cell production.
Step 4: Identify the location of red bone marrow in adults. In adults, red bone marrow is mainly found in the flat bones such as the pelvis, sternum, and ribs, as well as in the spongy (trabecular) bone at the ends of long bones.
Step 5: Conclude that most blood cells in adults are produced in red bone marrow, not in the compact bone matrix, yellow bone marrow, or periosteum (the outer fibrous layer of bone).
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