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2. Blood pressure in the arteries and arterioles Blood vessels are more than just a series of tubes; different types of blood vessels have different structures that help in their function. For example, have thick, elastic walls that help keep blood flowing through the body even when it is out of the range of the pumping force of the heart. In another example, are able to widen (during ) and narrow (during ) to adjust the blood flow through the body, depending on the body's activity.

          2. Blood pressure in the arteries and arterioles

Blood vessels are more than just a series of tubes; different types of blood vessels have different structures that help in their function. For example, __________ have thick, elastic walls that help keep blood flowing through the body even when it is out of the range of the pumping force of the heart. In another example, __________ are able to widen (during __________) and narrow (during __________) to adjust the blood flow through the body, depending on the body's activity.

2. Blood pressure in the arteries and arterioles

Blood vessels are more than just a series of tubes; different types of blood vessels have different structures that help in their function. For example, have thick, elastic walls that help keep blood flowing through the body even when it is out of the range of the pumping force of the heart. In another example, are able to widen (during ) and narrow (during ) to adjust the blood flow through the body, depending on the body's activity.

Added by Cassandra R.

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