SlideShare a Scribd company logo
Name____________________________ Class__________________ Date __________
© Pearson Education, Inc., publishing as Pearson Prentice Hall.
367
The Human Heart
The human heart has four chambers: right atrium, right ventricle,
left atrium, and left ventricle. Blood flows from the body into the
right atrium. Valves keep blood flowing in only one direction.
Follow the prompts to identify parts of the human heart. The diagram
shows the heart as if viewed from the front, so left and right are switched.
• Color the left atrium orange.
• Color the left ventricle red.
• Color the right atrium yellow.
• Color the right ventricle blue.
to body
from upper
body
from lungs
Use the diagram to answer the question.
1. A valve is located between the right atrium and the right
ventricle. What is the role of valves in the heart?
Name____________________________ Class__________________ Date __________
© Pearson Education, Inc., publishing as Pearson Prentice Hall.
368
The Circulatory System
The human circulatory system moves blood through two primary
pathways. One connects the heart and lungs, and the other con-
nects the heart and the rest of the body.
Draw arrows to show how blood moves through the circulatory system.
One has been drawn for you.
Capillaries of
head and arms
Aorta Pulmonary
artery
Capillaries of
left lung
Capillaries of
abdominal organs
and legs
Inferior
vena cava
Pulmonary
vein
Capillaries of
right lung
Superior
vena cava
Use the diagram to answer the question.
1. Through which blood vessel does blood return to the heart
from the head and arms?
Name____________________________ Class__________________ Date __________
© Pearson Education, Inc., publishing as Pearson Prentice Hall.
369
Blood Vessels
As blood flows through the body, it passes through three types of
blood vessels—arteries, veins, and capillaries.
Complete the table. Fill in the missing information.
Use the table to answer the questions.
1. Which are the smallest blood vessels? Circle the correct answer.
capillaries veins
2. How does exercise help veins function?
Blood Vessels Structure Function
arteries thick walls containing
connective tissue,
endothelium, and
smooth muscle
walls containing carry blood toward
connective tissue, the heart
endothelium, and
smooth muscle;
large ones also have
valves to control the
direction of blood flow
capillaries bring nutrients and
oxygen to cells
and remove
carbon dioxide
and waste

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Blood and Circulatory System WS

  • 1. Name____________________________ Class__________________ Date __________ © Pearson Education, Inc., publishing as Pearson Prentice Hall. 367 The Human Heart The human heart has four chambers: right atrium, right ventricle, left atrium, and left ventricle. Blood flows from the body into the right atrium. Valves keep blood flowing in only one direction. Follow the prompts to identify parts of the human heart. The diagram shows the heart as if viewed from the front, so left and right are switched. • Color the left atrium orange. • Color the left ventricle red. • Color the right atrium yellow. • Color the right ventricle blue. to body from upper body from lungs Use the diagram to answer the question. 1. A valve is located between the right atrium and the right ventricle. What is the role of valves in the heart?
  • 2. Name____________________________ Class__________________ Date __________ © Pearson Education, Inc., publishing as Pearson Prentice Hall. 368 The Circulatory System The human circulatory system moves blood through two primary pathways. One connects the heart and lungs, and the other con- nects the heart and the rest of the body. Draw arrows to show how blood moves through the circulatory system. One has been drawn for you. Capillaries of head and arms Aorta Pulmonary artery Capillaries of left lung Capillaries of abdominal organs and legs Inferior vena cava Pulmonary vein Capillaries of right lung Superior vena cava Use the diagram to answer the question. 1. Through which blood vessel does blood return to the heart from the head and arms?
  • 3. Name____________________________ Class__________________ Date __________ © Pearson Education, Inc., publishing as Pearson Prentice Hall. 369 Blood Vessels As blood flows through the body, it passes through three types of blood vessels—arteries, veins, and capillaries. Complete the table. Fill in the missing information. Use the table to answer the questions. 1. Which are the smallest blood vessels? Circle the correct answer. capillaries veins 2. How does exercise help veins function? Blood Vessels Structure Function arteries thick walls containing connective tissue, endothelium, and smooth muscle walls containing carry blood toward connective tissue, the heart endothelium, and smooth muscle; large ones also have valves to control the direction of blood flow capillaries bring nutrients and oxygen to cells and remove carbon dioxide and waste