Which of the following is true?

the pulmonary vein carries oxygenated blood

Why is it essential for the respiratory, circulatory, and digestive system to work together?

for cellular respiration to occur

Which statement describes a vein?

they get bigger as they get closer to the heart

Which of the following statements best describe diffusion?

molecule move from high to low concentration

What does a real lung look like?

a honey comb with small chambers throughout

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Systems of the human body

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review for respiratory,circulatory, and digestive system

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Questions 25

Answers

1
Which side of the heart has non-oxygenated blood?
neither side
both sides
left side
right side
2
Why is the red blood cell shaped biconcave like donuts?
to block carbon dioxide
to bend and be flexible
to clog capillaries
to remove hemoglobin
3
Which of the following is a chemical process?
peristalsis
chewing
cellular respiration
breathing
4
Which of the following is true?
the pulmonary vein carries oxygenated blood
the pulmonary artery carries oxygenated blood
veins carry blood away from heart
arteries carry blood to the heart
5
What structure does the epiglottis cover to prevent someone from choking while eating?
trachea
both trachea and esophagus
stomach
esophagus
6
Which of the following is a mechanical process?
peristalsis in esophagus,stomach, and small intestine
chewing
breathing
all of the above
7
Where does the greatest amount of digestion occurs?
stomach
mouth
small intestine
large intestine
8
Why is it essential for the respiratory, circulatory, and digestive system to work together?
for cellular respiration to occur
for breathing to be efficient
for blood flow
for digestion to occur
9
What two substances does cell get from the blood when cellular respiration occurs?
oxygen and carbon dioxide
glucose and oxygen
glucose and carbon dioxide
carbon dioxide and water
10
Which statement describes a vein?
they are under more pressure than arteries
they take blood away from the heart
they get bigger as they get closer to the heart
they are thick and muscular like arteries
11
Where does diffusion take place?
alveoli
capillaries
arteries
veins
12
What is the function of our sinus cavity?
all of the above
to moisten the air
to warm the air
to filter the air
13
What type of cells carry oxygen?
white blood cells
platelets
red blood cells
plasma cells
14
How many cells thick is a capillary?
one
it varies with location
cells don't move through capillaries
two
15
Which of the following is needed for mechanical digestion?
HCL acid
all of the above
enzymes
chewing
16
What happens when you inhale?
pressure in chest remain the same
pressure in chest increases
pressure in chest can't be determined
pressure in chest decreases
17
Which chamber is the largest and most muscular?
left ventricle
right ventricle
left atrium
right atrium
18
Which structure is always open because it is rigid and has cartilaginous rings?
trachea
sinus cavity
heart valves
esophagus
19
What structure separates the left and right sides of the heart so blood does not mix?
Aorta
Septum
Ventricle
pulmonary vein
20
Where does glucose diffuse into the blood stream?
mitochondria
alveoli
aorta
villi
21
What happens to the size of the tubes in from the sinus cavity to the alveoli?
none of the above
they get smaller
the size is constant
they get bigger
22
Which of the following statements best describe diffusion?
It is affected by the number of capillaries
It is the ratio of white blood cells to red blood cells
molecule move from high to low concentration
Diffusion is not affected by concentration
23
What statement relates to both alveoli and villi?
lots of surface area
place of diffusion
contact with bloodstream
all of the above
24
Which side of the body does the right lung supply oxygen to?
left side
right side
above the heart
both left and right side
25
What does a real lung look like?
a sponge
a stringy muscle
a honey comb with small chambers throughout
a balloon

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