Question 1
3/ 3pts
Which cells target parasites and worms?
eosinophils
B and T cells
macrophages
phagocytes
cytokines
Question 2
3/ 3pts
The first line of defense against foreign invaders is ____.
adaptive immunity
the immune system
B and T cell activity
physical and chemical barriers
antibody production
Question 3
3/ 3pts
Which cells are found in lymph nodes to clear away bacteria and other
unwanted substances?
T cells
B cells
dendritic cells
macrophages
platelets
Question 4
3/ 3pts
Which line of defense is the body’s inborn, general defense mechanism?
adaptive immunity
the immune system
B and T cell activity
innate immunity
antibody production
Question 5
3/ 3pts
Which cells alert the adaptive immune system when they detect antigens?
eosinophils
B and T cells
macrophages
dendritic cells
cytokines
Question 6
3/ 3pts
Which portion of the lymphatic system is the site where T lymphocytes
develop?
tonsils
all lymph nodes
liver
thymus gland
thoracic duct
Question 7
3/ 3pts
During an immune response, which cells disintegrate producing a chemical
net that traps nearby invaders?
T cells
B cells
macrophages
neutrophils
eosinophils
Question 8
3/ 3pts
When activated, the complement system produces ____.
fever
membrane attack complexes
dendritic cell activation
antibodies
prostaglandins
Question 9
3/ 3pts
In order for an oxygen molecule to enter the blood from the lungs it must
first cross the ____.
hemoglobin
red blood cell membrane
capillary endothelium
fluid basement membrane
pleural membrane
Question 10
3/ 3pts
The term that describes a tissue lacking oxygen is ____.
hypoxic
hyperemia
hyperbaric
hypercapnia
hyperventilate
Question 11
3/ 3pts
If too little carbon dioxide is moving out of the lungs, ____.
the blood pH will rise
oxygen levels will rise
bronchioles will relax
blood vessels will relax
respiratory activity will decrease
Question 12
3/ 3pts
During the process of gas exchange, gases move ____.
by active transport
down electrical gradients
through membrane channels
by facilitated diffusion
down partial pressure gradients
Question 13
3/ 3pts
The reaction that forms bicarbonate from carbon dioxide occurs fastest in
____.
plasma
red blood cells
alveoli cells
nerve cells
muscle cells
Question 14
3/ 3pts
The common passageway for air and food is the ____.
nasal cavity
epiglottis
glottis
pharynx
larynx
Question 15
3/ 3pts
Which disorder is classified a COPD?
emphysema
asthma
lung cancer
high blood pressure
apnea
Question 16
3/ 3pts
Because of hemoglobin, blood is able to carry ____ times more oxygen than
what can dissolve in the blood.
30
40
50
60
70
Question 17
3/ 3pts
The major respiratory muscle is the ____.
diaphragm
external intercostals
internal intercostals
scalenes
trapezius
Question 18
3/ 3pts
At sea level, what percentage of the air we breathe is oxygen?
21%
30%
50%
79%
100%
Question 19
3/ 3pts
During swallowing food, which structure moves downward to prevent food
from entering the trachea?
larynx
pharynx
glottis
epiglottis
bronchus
Question 20
3/ 3pts
Which of the following is NOT a characteristic of alveoli?
small overall surface area
thin basement membrane
surfactant production
small diameter
reduced surface tension to maintain opening
Question 21
3/ 3pts
Which type of lung cancer is the most aggressive form?
beta cell carcinoma
squamous cell carcinoma
large-cell carcinoma
adenocarcinoma
small-cell carcinoma
Question 22
3/ 3pts
Which antibody class is associated with allergies?
IgG
IgA
IgE
IgD
IgM
Question 23
3/ 3pts
T cells can only be activated by ____.
antigens presented by other cells
apoptosis
memory cells
plasma cells
complement proteins
Question 24
3/ 3pts
Which cell type is responsible for a major component of tissue rejection
following an organ transplant?
B cells
plasma cells
memory cells
T helper cells
cytotoxic T cells
Question 25
3/ 3pts
The acidic nature of the fluid around active tissue is the result of ____.
falling levels of oxygen
falling DPG levels
rising levels of carbon dioxide
increased iron concentration
increased blood pressure
Quiz Score:75out of 75
