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Anatomy

Explore questions in the Anatomy category that you can ask Spark.E!

After the blood has traveled through the body, oxygen-poor blood comes back to the right _____ of the heart.
Capillary walls are only one cell thick. Materials can pass easily through them. Materials like oxygen and ______ pass from the blood into body cells.
Every organ receives blood from _______ that branch off the aorta.
________ walls are thick. They consist of three layers.
You can determine how fast your heart is beating by counting the number of times an _______ pulses.
The ______ arteries carry blood to the heart itself.
The innermost layer is made of _______ cells. Its smooth texture allows blood to flow freely.
Blood leaves the left ventricle through the ____, the largest artery in the body.
In the first loop, _______-poor blood flows from the right atrium into the right ventricle, where it is pumped to the lungs.
In the other loop, the _______-rich blood moves from the left atrium to the left ventricle.
The left ventricle pumps blood into the ____.
Other arteries carry blood to the brain and other _______.
The outer wall of an artery is made of flexible _______ tissue.
______ are tiny vessels where substances are exchanged between the blood and body cells. Blood flows from capillaries into veins.
The _____ is a hollow, muscular organ that pumps blood throughout the body. Each time the heart beats, it pushes blood through the blood vessels of the cardiovascular system.
The overall pattern of the body's blood flow consists of ___ loops. In the first loop, blood travels from the heart to the lungs and then back to the heart. In the second loop, blood is pumped from the heart through the body and then returns again to the heart.
Each lower chamber, or ____, pumps blood out of the heart.
In each side of the heart, the atrium and the ventricle are separated by a valve. A _____ is a flap of tissue that prevents blood from flowing backward.
The _____ carry blood back to your heart.
Each side has two compartments, or chambers. Each upper chamber, or _______, receives blood that comes into the heart.

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