Blood within the pulmonary veins returns to the ________.
Fill in the blank(s) with the appropriate word(s).
Left atrium
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The __________ of the amniotic egg encloses a fluid to act as a protective hydraulic cushion
A) Allantois B) Amnion C) Chorion D) Yolk sac Fill in the blank with the correct answer.
All the chemical and mechanical phases of digestion from the mouth through the small intestine are directed toward changing food into forms that can pass through the epithelial cells lining the mucosa into the underlying blood and lymphatic vessels
Indicate whether the statement is true or false
Bones that are thin and have a broad curved shape are classified as ________ bones.
A. short B. irregular C. flat D. long
Desmosomes are more effective than tight junctions in preventing substances from passing between cells
Indicate whether the statement is true or false