Use the diagram above to answer the following questions.
-Identify the letter that indicates structures that assist in filtering, heating, and humidifying inspired air.
Definitions:
Ectoderm
The outermost layer of cells or tissue of an embryo in early development, giving rise to the outer layer of skin, brain, and nervous system.
Embryonic Development
The process by which the embryo is formed and develops, beginning with fertilization and ending at birth or hatching.
Organogenesis
The process of organ formation.
Blastula
An early stage of embryonic development in animals, characterized by a spherical layer of cells (the blastoderm) surrounding a fluid-filled cavity (the blastocoel).
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