WorksheetsRespiratory System
Total questions: 23
Worksheet time: 12mins
Name
Class
Date
1.
During inhalation, air flows into the lungs because ___
a)
air pressure is greater outside the body than in the lungs and naturally flows inside once the chest has expanded.
b)
the strong chest muscles are sucking in air.
c)
air moves passively in and out of the lungs through time
d)
the surfactant in the lungs "draws" in air because of its adhesive properties.
2.
During inhalation, air flows into the lungs because ___
a)
air pressure is greater outside the body than in the lungs and naturally flows inside once the chest has expanded.
b)
the strong chest muscles are sucking in air.
c)
air moves passively in and out of the lungs through time
d)
the surfactant in the lungs "draws" in air because of its adhesive properties.
3.
What percentage of oxygen in the blood is carried by hemoglobin, as opposed to dissolved in the plasma?
a)
97.5%
b)
75%
c)
15%
d)
32.6%
4.
When the diaphragm contracts, the volume of the thoracic cavity ___
a)
increases
b)
decreases
c)
remains the same
5.
How many molecules of oxygen can each hemoglobin theoretically carry?
a)
4
b)
12
c)
1
d)
2
6.
As the volume of the thoracic cavity increases, the pressure ___
a)
decreases
b)
remains unchanged
c)
increases
7.
As the volume of the thoracic cavity increases, the pressure ___
a)
relax
b)
spasm
c)
contract
8.
Carbon dioxide in the blood is converted to ___
a)
bicarbonate
b)
oxygen
c)
glucose
d)
lactic acid
9.
Approximately how many breaths per minute is normal for a resting human?
a)
12
b)
120
c)
75
d)
35
10.
If carbon dioxide levels in your blood increase, this will result in a medical condition known as ___
a)
acidosis
b)
alkalosis
c)
acidophilus
d)
diabetes
11.
An infection of the lungs with bacteria or virus leading to inflammation and fluid build up is known as ___
a)
pneumonia
b)
COPD
c)
asthma
d)
apena
12.
The back of the nasal cavity or throat is also known as the ___.
a)
pharynx
b)
nare
c)
larynx
d)
glottis
13.
The ___ is also referred to as the voice box
a)
larynx
b)
epiglottis
c)
pharynx
d)
trachea
14.
A suction is caused by negative pressure
a)
true
b)
false
15.
Lungs are a more efficient method of respiration than gills.
a)
false
b)
true
16.
The membrane surrounding the lungs is referred to as the ___ membrane.
a)
pleural
b)
pulmonary
c)
thoracic
d)
capillary
17.
For the proper diffusion of gases into and out of animals it is necessary that the body walls, gills or lungs ___.
a)
be moist
b)
have a blood circulatory system
c)
be very small
d)
have many partitions
18.
Terrestrial arthropods, like insects, have ___ which are openings to the external environment that allow air into the body.
a)
spiracles
b)
bronchioles
c)
trachea
d)
tracheoles
19.
The function of the epiglottis is to ___
a)
cover the trachea when food is being swallowed
b)
line the interior of the thoracic cavity
c)
separate the thoracic cavity from the abdominal cavity.
d)
bind to carbon dioxide in red blood cells
20.
Which mineral is an essential part of hemoglobin and responsible for reversibly binding to oxygen?
a)
iron
b)
nitrogen
c)
oxygen
d)
calcium
21.
In mammals, gas exchange between the air and blood takes place across the walls of the ___.
a)
alveoli.
b)
pleural membrane
c)
gills
d)
diaphragm
22.
Capturing energy by animals is in effect a process that utilizes ___ and produces ___.
a)
oxygen; carbon dioxide
b)
N2; carbon
c)
carbon dioxide; oxygen
d)
nitrogen; H2O
23.
Increased surface area of lungs is achieved through many ___
a)
partitions
b)
capillaries
c)
bronchioles
d)
bronchi
100 %
