Which Statement Regarding Blood Cells Is Correct

question 144

Multiple Choice

Which statement regarding blood cells is correct?

• A) All blood cells originate in red bone marrow.
• B) Red bone marrow is the primary source of all blood cells except mast cells and macrophages.
• C) Most types of leukocytes appear in equal amounts in the blood.
• D) Erythrocytes are produced in red marrow while leukocytes are produced primarily in lymph nodes.

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Definitions:

Clasts

Pieces of rock or mineral fragments that are broken off from their parent source and are used in the creation of sedimentary rocks through the process of lithification.

Sedimentary Rocks

Rocks formed by the accumulation or deposition of mineral or organic particles at the Earth's surface, followed by compaction and cementation.

Conglomerate

A coarse-grained clastic sedimentary rock composed of rounded to sub-rounded clasts (pebbles, cobbles, and boulders) in a fine-grained matrix of sand and mud.

Breccia

A rock composed of large, angular fragments; typically formed in sedimentary environments, but can be formed by volcanic, hydrothermal, or tectonic processes.