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Human Body Systems Practice

Total questions: 40

Worksheet time: 47mins

Name
Class
Date
1.
In humans, what happens when the breathing rate increases?
a)
More oxygen will enter the blood.
b)
More carbon dioxide will enter the blood.
c)
Oxygen from body cells will be exhaled.
d)
Oxygen will not be absorbed into the blood.
2.
In humans, red bone marrow provides
a)
structural support for the body
b)
a source of new blood cells
c)
an attachment site for muscle tissue
d)
a site to trap bacteria
3.
Which is NOT a function of a skeleton?
a)
transport of nutrients
b)
organ protection
c)
anchorage for muscle action
d)
body movement
4.

Vaping and cigarette smoke disrupts the function of the

a)

lungs

b)

diaphragm

c)

kidneys

d)

liver

5.
The removal of wastes from an organism illustrates the life function known as
a)
regulation
b)
nutrition
c)
respiration
d)
excretion
6.

Veins are blood vessels that

a)

deliver blood to the cells of the body

b)

contain striated muscle

c)

carry blood toward the heart

d)

readily exchange materials between the blood and body cells

7.
Two functions of bones are to protect body structures and to
a)
serve as storage for glycogen
b)
synthesize vitamins
c)
provide sites for energy production
d)
act as levers during body movements
8.
Base your answer on The diagram below represents a system in a human body. This body system is most directly involved in the
a)
production of blood cells
b)
stimulation of rapid growth
c)
elimination of body wastes
d)
initiation of muscle movement
9.
The main function of the human digestive system is to
a)
rid the body of cellular waste materials
b)
process organic molecules so they can enter cells
c)
break down glucose in order to release energy
d)
change amino acids into proteins and carbohydrates
10.
Which part of the human digestive tract absorbs nutrients for passage into the blood?
a)
esophagus
b)
appendix
c)
small intestine
d)
large intestine
11.

Base your answer on the picture. Which list of words correctly matches the diagram?

a)

organ --> cell --> tissue --> organ system

b)

cell --> tissue --> organ system --> organ

c)

cell --> tissue --> organ --> organ system

d)

organ system --> organ --> cell --> tissue

12.
Locomotion (movement) is accomplished by the
a)
muscular and skeletal systems
b)
endocrine and muscular systems
c)
nervous and endocrine systems
d)
digestive and respiratory systems
13.
The nervous system and the endocrine system in humans
a)
are composed of neurons
b)
are composed of glands
c)
maintain homeostasis
d)
secrete chemicals across synapses
14.
When a soccer player runs fast and for a long time, her body delivers more nutrients and oxygen to her cells than when she is resting. This shows the concept of
a)
homeostasis
b)
nutrition
c)
synthesis
d)
cyclosis
15.
An example of mechanical digestion is
a)
an amoeba engulfing a paramecium
b)
a fungus growing on decaying material
c)
solid waste moving through the large intestine
d)
food being chewed in the mouth
16.
In which organ does chemical digestion occur?
a)
large intestine
b)
esophagus
c)
gall bladder
d)
stomach
17.
Which human organ removes liquid waste from the blood?
a)
lungs
b)
kidney
c)
brain
d)
liver
18.
In humans, most gas exchange occurs between the
a)
excretory and circulatory systems
b)
circulatory and digestive systems
c)
respiratory and excretory systems
d)
respiratory and circulatory systems
19.
A student athlete is encouraged to eat a healthly, balanced diet in order to stay healthy and perform well. This is an example of…
a)
homeostasis
b)
nutrition
c)
synthesis
d)
cyclosis
20.
The nervous system and the endocrine system in humans
a)
are composed of neurons
b)
 are composed of glands
c)
 maintain homeostasis
d)
 secrete chemicals across synapses
21.
Maintenance of the pH of human blood within a certain range is an example of
a)
Digestion
b)
Synthesis
c)
Respiration
d)
Homeostasis
22.
Which term refers to the maintenance of a stable internal environment in an organism?
a)
respiration
b)
regulation
c)
metablosim
d)
Homeostasis
23.
In a changing external environment, an animal must be able to maintain constant internal conditions. This is known as
a)
transport
b)
metabolism
c)
homeostasis
d)
nutrition
24.
Which term refers to all the activities performed by an organism in order to live?
a)
homeostasis
b)
excretion
c)
metablosim
d)
synthesis
25.
What is required for two organs to be considered part of the same body system?
a)
The organs must be close to each other.
b)
The organs must be made from the same type of cells.
c)
The organs must work together to carry out a life function.
d)
The organs must be regulated by the same mechanism.
26.
The endocrine system will often utilize which body system to distribute its hormones?
a)
nervous
b)
respiratory
c)
excretory
d)
circulatory
27.
The digestive system will often utilize which body system to distribute nutrients?
a)
nervous
b)
respiratory
c)
excretory
d)
circulatory
28.
The possible movement of an arm by muscles is coordinated by the
a)
nervous
b)
skeletal
c)
muscular
d)
circulatory
29.
Which body system is responsible for the elimination of liquid and gaseous wastes?
a)
nervous
b)
respiratory
c)
excretory
d)
digestive
30.

Which statement best describes the enzyme shown in the graphs below?

a)

This enzyme works best at a temperature of 35°C and a pH of 8.

b)

This enzyme works best at a temperature of 50°C and a pH of 12.

c)

Temperature and pH have no effect on the action of this enzyme.

d)

This enzyme works best at a temperature above 50°C and a pH above 12.

31.
Vegetable oil is what kind of substance?
a)
fat
b)
protein
c)
carbohydrate
d)
salt
32.

Lean Meats, poultry, eggs, dairy products are what kind of substance?

a)

fat

b)

protein

c)

carbohydrate

d)

salt

33.

Starches and Sugars found in foods like fruits, grains, and vegetables, are what kind of substance?

a)

fat

b)

protein

c)

carbohydrate

d)

salt

34.
Animals commonly store energy in the form of
a)
fat
b)
protein
c)
carbohydrate
d)
minerals
35.
Which sequence lists the levels of organization in the human body from simplest to most complex?
a)
organ system --> tissue --> cell --> organ
b)
<br />tissue --> cell --> organ --> organ system
c)
organ --> organ system --> tissue --> cell
d)
cell --> tissue --> organ --> organ system
36.
Which organ removes carbon dioxide from the blood?
a)
Kidney
b)
Liver
c)
Lung
d)
Stomach
e)
Skin
37.
Which organ is responsible for the digestion of protein?
a)
Kidney
b)
Liver
c)
Lung
d)
Stomach
e)
Skin
38.
Which organ removes liquid wastes from the blood?
a)
Kidney
b)
Liver
c)
Lung
d)
Stomach
e)
Skin
39.
Which organ is responsible for the removal of heat from the body?
a)
Kidney
b)
Liver
c)
Lung
d)
Stomach
e)
Skin
40.

The pancreas is a human body organ. One of its functions is to secrete the hormones insulin and glucagon. The diagram below represents how these two hormones work together to regulate the amount of sugar in a person's blood.

a)

raises the amount of sugar in the blood

b)

lowers the amount of sugar in the blood

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