WorksheetsHuman Body Systems
Total questions: 40
Worksheet time: 20mins
Name
Class
Date
1.
After food is digested, the nutrients are absorbed through the wall of this organ
a)
large intestine
b)
small intestine
c)
stomach
d)
liver
2.
Food is moved through the digestive system by these muscular contractions
a)
peristalsis
b)
homeostasis
c)
synthesis
d)
respiration
3.
Food is broken down both mechanically and chemically in these two parts of the digestive system.
a)
mouth and stomach
b)
mouth and small intestine
c)
mouth and large intestine
d)
stomach and small intestine
4.
The purpose of mechanical digestion is to create more of this so that chemical digestion can occur faster.
a)
enzyme
b)
protein
c)
surface area
d)
folding
5.
The tube that carries food to the stomach
a)
trachea
b)
windpipe
c)
esophagus
d)
pancreas
6.
Food is mostly digested here and finishes digestion here
a)
mouth
b)
esophagus
c)
stomach
d)
small intestine
7.
This organ reabsorbs excess water from waste before it is eliminated
a)
liver
b)
pancreas
c)
small intestine
d)
large intestine
8.
Projections in the small intestine that increase the rate of nutrient diffusion.
a)
nephrons
b)
capillaries
c)
villi
d)
alveoli
9.
When the large intestine does not absorb enough water from the solid waste before it is eliminated.
a)
constipation
b)
diarrhea
c)
ulcer
d)
appendicitis
10.
A wearing away of the lining of the stomach caused from an overproduction of enzymes and acids.
a)
diarrhea
b)
constipation
c)
ulcer
d)
appendicitis
11.
A layer of this protects the stomach from digesting itself.
a)
mucus
b)
protease
c)
amylase
d)
villi
12.
The dried out undigested waste is temporarily stored here until it can be eliminated from the body.
a)
liver
b)
pancreas
c)
small intestine
d)
rectum
13.
Chemical digestion breaks large carbohydrates down into these small chemicals.
a)
amino acids
b)
fats
c)
starch
d)
simple sugars
14.
The ultimate destination for nutrients.
a)
air
b)
colon
c)
stomach
d)
body cells
15.
System of organs that exchange gases between the blood of the circulatory system and the environment.
a)
digestive
b)
excretory
c)
endocrine
d)
respiratory
16.
The respiratory system takes in oxygen for this process
a)
photosynthesis
b)
cell respiration
c)
digestion
d)
reproduction
17.
The respiratory system gets rid of carbon dioxide waste that’s produced by this process
a)
breathing
b)
photosynthesis
c)
cell respiration
d)
digestion
18.
The process that produces ATP energy for the cell
a)
photosynthesis
b)
cell respiration
c)
inhalation
d)
exhalation
19.
Located at the ends of bronchioles and are covered by tiny capillaries
a)
villi
b)
alveoli
c)
bronchi
d)
cilia
20.
The functional units of gas exchange in the lungs
a)
bronchi
b)
bronchioles
c)
alveoli
d)
trachea
21.
This muscle is located at the base of the chest cavity and allows for inhalation and exhalation
a)
diaphragm
b)
tongue
c)
alveoli
d)
trachea
22.
Breathing rate is controlled by this organ
a)
brain
b)
lungs
c)
heart
d)
liver
23.
The brain monitors the amount of this. When there is too much of this, the brain tells the respiratory system to speed up
a)
oxygen
b)
water
c)
carbon dioxide
d)
nitrogen
24.
Degeneration of the alveoli resulting in decreased lung capacity and functioning. Often caused by smoking.
a)
pneumonia
b)
bronchitis
c)
asthma
d)
emphysema
25.
Often caused by allergies. Results in labored breathing, wheezing, and a tight feeling in the chest.
a)
pneumonia
b)
bronchitis
c)
asthma
d)
emphysema
26.
Blood vessels that carry blood to the heart
a)
veins
b)
arteries
c)
capillaries
d)
bronchioles
27.
Two top chambers of the heart that receive blood from the rest of the body
a)
atria
b)
ventricles
c)
valves
d)
bronchi
28.
Two bottom chambers that pump blood away from the heart
a)
atria
b)
ventricles
c)
capillaries
d)
villi
29.
Blood vessels that carry blood away from the heart
a)
capillaries
b)
veins
c)
arteries
d)
venules
30.
Tiny blood vessels located at the ends of veins and arteries that are in contact with the body cells
a)
veins
b)
arteries
c)
capillaries
d)
villi
31.
The liquid portion of the blood
a)
platelets
b)
red blood cells
c)
hemoglobin
d)
plasma
32.
Contain hemoglobin
a)
red blood cells
b)
white blood cells
c)
oxygen
d)
carbon dioxide
33.
An inherited condition in which many of a person’s red blood cells cannot carry enough oxygen because they are abnormally shaped
a)
leukemia
b)
sickle cell anemia
c)
heart attack
d)
diabetes
34.
Cancer of the bone marrow in which too many nonfunctional white blood cells are produced
a)
leukemia
b)
pneumonia
c)
sickle cell anemia
d)
heart attack
35.
Substance in cigarette smoke that sticks to alveoli and decreases lung capacity
a)
nicotine
b)
tar
c)
ammonia
d)
tobacco
36.
Hairlike structures that line the respiratory tract to filter air inhaled
a)
amoeba
b)
cilia
c)
pseudopod
d)
flagella
37.
Substance in cigarettes that increases heart rate, blood pressure and narrows blood vessels
a)
tar
b)
ammonia
c)
nicotine
d)
glucose
38.
The color that represents oxygenated blood
a)
red
b)
blue
c)
purple
d)
green
39.
What blood component is in the greatest quantity in normal human blood?
a)
red blood cells
b)
white blood cells
c)
hormones
d)
fatty acid
40.
Odorless, tasteless, colorless gas that prevents oxygen from binding to hemoglobin.
a)
carbon dioxide
b)
carbon monoxide
c)
ammonia
d)
nitrogen
100 %
