Download Organ Systems in Humans: The Circulatory

DATE:
NAME:
CHAPTER 2
CLASS:
Organ Systems in Humans:
The Circulatory System Answers
BLM 1-34
Goal • Review terms related to the circulatory system.
What to Do
Using the diagram on page 85 of BC Science 8, label the parts of the circulatory system.
Right atrium receives blood from body
Veins from the head
Left atrium receives blood from lungs
Arteries to the head
Veins from the arm
Arteries to the arm
Left Ventricle pumps blood out to rest of body
Right Ventricle pumps blood to lungs
Veins taking blood to heart
Artery to kidney
Vein from kidney
Arteries to legs
Veins from legs
1. Which structures connect the arteries and veins?
Capillaries connect the arteries and veins.
2. Which vessels transport blood away from the heart and have thick muscular walls?
ARTERIES TRANSPORT BLOOD AWAY FROM THE HEART.
Continued on next page
Copyright © 2006, McGraw-Hill Ryerson Limited, a Subsidiary of the McGraw-Hill Companies. All rights reserved.
This page may be reproduced for classroom use by the purchaser of this book without the written permission of the publisher.
DATE:
NAME:
CLASS:
BLM 1-34
continued
Copyright © 2006, McGraw-Hill Ryerson Limited, a Subsidiary of the McGraw-Hill Companies. All rights reserved.
This page may be reproduced for classroom use by the purchaser of this book without the written permission of the publisher.
DATE:
NAME:
BLM 3-11
continued
3. Which vessels transport blood toward the heart and have valves?
Veins transport blood toward the heart.
4. Which part of the heart receives blood from the lungs?
The left atrium receives blood from the lungs.
5. Why is the circulatory system important to humans?
It is the system that ensures all cells receive nutrients and get rid of their wastes. The circulatory system also helps fight
disease and serves a role in communication by circulating hormones throughout the body.
6. Which structures are included in the circulatory system?
Heart, arteries, veins, and capillaries make up the circulatory system.
7. Why are capillaries small and thin?
Gases that enter or leave the bloodstream must diffuse through membranes. The thin nature of these vessels
ensures efficient diffusion.
8. Name the parts of the heart. Why do you suppose the heart needs all these parts?
The right atrium, right ventricle, left atrium, and left ventricle are required because the heart must actually
accommodate two cycles, one for the lungs and another for the body
Copyright © 2001, McGraw-Hill Ryerson Limited, a Subsidiary of the McGraw-Hill Companies. All rights reserved.
This page may be reproduced for classroom use by the purchaser of this book without the written permission of the publisher.
7