The thoracic organs are drained mainly by:
What will be an ideal response?
the azygos system.
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The placenta and its attached fetal membranes are collectively called the afterbirth
Indicate whether the statement is true or false
Which cellular operation occurs in the smooth endoplasmic reticulum?
A) DNA replication leading to cell division B) synthesis of ribosomes via nucleoli C) synthesis of RNA D) manufacture of carbohydrates and lipids E) regulation of protein synthesis
All cardiac veins empty into the ________, which then empties into the ________.
A. great cardiac vein; superior vena cava B. coronary sinus; right atrium C. coronary sinus; left atrium D. great cardiac vein; right atrium E. inferior vena cava; left atrium
The diameter of bronchioles can change because their walls contain
A. smooth muscle. B. skeletal muscle. C. fibrous cartilage. D. hyaline cartilage. E. elastic cartilage.