5th Grade
BODY SYSTEMS QUESTIONS
1.
Which is a major organ of the circulatory system?
A brain
B heart
C kidney
D stomach
2.
Which system protects the cardiovascular
system?
A skeletal system
B nervous system
C digestive system
D circulatory system
3.
Which system moves blood around the body?
A nervous
B digestive
C muscular
D circulatory
4.
Why is the digestive system important?
A It transports blood that cells need.
B It provides oxygen that cells need.
C It provides nutrients that cells need to produce
energy.
D It carries carbon dioxide and oxygen away from
the body.
5.
How do the muscular and skeletal systems work
together to help the body?
 A They provide blood to the body.
 B They provide nutrients to the body.
 C They provide structure and movement for the
body.
 D They provide oxygen and carbon dioxide to
the body.
6.
How is the respiratory system different from the
cardiovascular system?
 A The respiratory system aids in digestion, while the
cardiovascular system aids in muscle strength.
 B The cardiovascular system aids in digestion, while the
respiratory system aids in muscle strength.
 C The cardiovascular system aids the lungs, while the
respiratory system aids the heart, veins, and arteries
throughout the body.
 D The respiratory system aids the lungs, while the
cardiovascular system aids the heart, veins, and arteries
throughout the body.
7.
Which best describes the role of the respiratory
system?
 A It helps people stand upright.
 B It helps people eat and digest different foods.
 C It helps people transport blood throughout
their body.
 D It helps people breathe in oxygen and
breathe out carbon dioxide.
8.
Which best describes the purpose of the
respiratory system?
 A to supply oxygen to cells
 B to supply protection to organs
 C to supply food and nutrients to the body
 D to supply blood to the brain and muscles
9.
Which system produces red blood cells?
 A skeletal
 B nervous
 C digestive
 D circulatory
10.
How does the skeletal system benefit the
digestive system?
 A It protects organs within the system.
 B It supplies blood to organs within the system.
 C It provides oxygen to organs within the
system.
 D It provides nutrients to organs within the
system.
11.
Which two human body systems work closely
together to distribute nutrients from food
throughout the body?
 A muscular and skeletal
 B digestive and circulatory
 C circulatory and respiratory
 D cardiovascular and digestive
12.
Which two body systems work together to take in
oxygen and release carbon dioxide?
 A muscular and skeletal
 B digestive and circulatory
 C respiratory and muscular
 D circulatory and respiratory
13.
#13 Ans: A
 Which best describes the way the digestive and
muscular systems are related?
 A Swallowed food is pushed through the
esophagus. B The diaphragm, above the
intestines, inflates and deflates.
 C Nutrients are transported to the bones to help
them function. D The heart absorbs oxygen and
nutrients from various parts of the body.

14.
Which statement best summarizes the relationship
between the muscular system and the
cardiovascular system?
 A The heart is protected from injury by the
breastbone.
 B Nutrients are carried to the heart through
arteries and veins.
 C Messages are carried by nerves between the
brain and the heart.
 D The heart contracts and expands as it pumps
blood throughout the body.
15.
Which task in the human body is accomplished
through the combined efforts of the
cardiovascular and muscular systems?
 A protecting major body organs
 B pumping blood throughout the body
 C releasing waste products from the body
 D moving water and nutrients from one organ
to another
16.
Which best explains the effects of exercise on the
respiratory system?
 A Exercise increases breathing rate which makes
the lungs stronger.
 B Exercise increases breathing rate which makes
the bones stronger.
 C Exercise decreases breathing rate which sends
more oxygen to the brain.
 D Exercise decreases breathing rate which
produces more wastes for the kidneys to process.
17.
Which best describes the circulatory system?
 A It protects the major organs of the body.
 B It breaks food into nutrients for the body.
 C It sends messages to the brain to protect the
body.
 D It transports oxygen-rich blood throughout
the body.
18.
Which best describes the purpose of the muscular
system?
 A The muscular system carries messages from the
brain to the bones to move the body.
 B The muscular system keeps the bones strong
and protects them from being broken.
 C The muscular system produces energy the body
needs to be able to move.
 The muscular system allows movement of bones
and helps maintain posture.
19.
Which two systems work together to help a
person stand erect?
 A skeletal and muscular
 B skeletal and digestive
 C skeletal and respiratory
 D skeletal and cardiovascular
20.
Which is responsible for providing oxygen to
cells?
 A skeletal system
 B digestive system
 C muscular system
 D circulatory system
21.
Which best compares the respiratory system to the
circulatory system?
 A The respiratory system transports oxygen to cells,
while the circulatory system provides oxygen for cells.
 B The respiratory system provides oxygen for cells, while
the circulatory system transports oxygen to cells.
 C The respiratory system breaks down food for cell
energy, while the circulatory system rids the body of
waste.
 D The respiratory system rids the body of waste, while
the circulatory system breaks down food for cell energy.
22.
Which is an example of a function the muscular
system performs?
 A Voluntary muscles pump blood through the body.
 B Skeletal muscles keep a body’s joints working
properly.
 C Cardiac muscles move bones and hold a body’s
skeleton in place.
 D Smooth muscles help move food through the
organs they surround.
23.
Which best describes the purpose of the
cardiovascular system?
 A It delivers blood to the body’s tissues.
 B It supplies stability to the skeleton.
 C It delivers food to power the body.
 D It supplies oxygen to the body.
24.
What roles do the muscular and respiratory systems serve in
the body when someone lifts weights?




A The muscular system allows the person to lift the weights,
while the respiratory system provides oxygen to the body.
B The muscular system provides oxygen to the body, while
the respiratory system allows the person to lift the weights.
C The muscular system provides nutrients to the blood, while
the respiratory system provides sweat to cool the body.
D The muscular system provides sweat to cool the body,
while the respiratory system provides nutrients to the blood.
25.
The circulatory system transports waste through the
bloodstream. Which is the best example of another
system working to remove waste from the body?
 A The respiratory system releases carbon dioxide.
 B The skeletal system produces new red blood
cells.
 C The digestive system breaks down food into
nutrients.
 D The nervous system send signals from the brain
to the muscles.
26.
Which best describes the relationship between the skeletal
system and the circulatory system?
 A The skeletal system transports red blood cells after the
circulatory system produces them.
 B The skeletal system protects red blood cells and the
circulatory system pumps those cells through veins and
arteries.
 C The skeletal system produces red blood cells and the
circulatory system transports those cells where they need to
go.
 D The skeletal system helps put oxygen in red blood cells
and the circulatory system helps those cells rid the body of
carbon dioxide.
27.
Which best describes the circulatory system?
 A a system made up of the brain and nerves that
delivers nutrients and removes waste from the
body
 B a system made up of lymph and blood that
delivers nutrients and removes waste from the
body
 C a system made up of the brain and nerves that
delivers messages throughout the body
 D a system made up of the heart and blood that
delivers messages throughout the body