The Respiratory System Consists Of

question 1

Multiple Choice

The respiratory system consists of:

• A) the lungs.
• B) the chest.
• C) the conducting airways.
• D) all of the above.

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Definitions:

Allantois

An embryonic membrane in reptiles, birds, and mammals that is involved in respiration and excretion.

Fertilization

The process of a sperm cell joining with an ovum (egg cell) to form a zygote, initiating the development of a new organism.

Cleavage

The division of cells in the early embryo following fertilization, leading to the formation of a multicellular organism.

Gastrulation

A phase early in embryonic development during which the single-layered blastula reorganizes into a multilayered structure, forming the embryonic germ layers.