NWHSU Histo 2 Circulatory System
Questions and Answers (100% Pass)
What does the circulatory system transport?
✓ O2, CO2, nutrients and waste
Does the circulatory system regulate temperature?
✓ You betcha
What cells does the circulatory system distribute?
✓ Hormones and RBC/WBC
The heart, arteries, capillaries and venous system all make up the
____________ system
✓ Cardiovascular
What system returns excess extravascular fluid (lymph) from periphery to big
veins in base of neck?
✓ Lymph vascular system
What structure of the vascular wall contains the internal elastic lamina (IEL)?
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✓ Tunica Intima
What structure of the vascular wall contains the external elastic lamina (EEL)?
✓ Tunica Adventitia
What structure of the vascular wall contains ONLY smooth muscle, elastin and
collegen
✓ Tunica media
Put the arterial system in order from smallest to largest
Medium (muscle)
Small Artery
Large Artery (Elastic)
Arteriole
✓ Arteriole<Small<Muscle< Elastic
Put the venous system in order from smallest to largest
Medium
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Large
Small
Venule
✓ Venule<Small<Medium<Large
Arteries and veins always run side by side in close proximity in size except
what artery and vein?
✓ Large artery and large vein
What is the function of the arterial system?
✓ Distribute blood from the heart to capillary beds
The flow of blood in the arterial system is regulated by the changing in the
________ of the distributing vessels
✓ Diameter
In the arterial system, the flow of blood is controlled by which part of the
autonomic nervous system? Which adrenal medulla hormones?
✓ Sympathetic; Epinephrine and Norepinephrine
Master01 | October, 2024/2025 | Latest update