Question 31
anemia is the decreased ability of to supply adequate oxygen to the body's cells.
white blood cells
red blood cells
platelets
none of the above
1 points
question 32
the lymphatic system functions in the absorption of
excess fluid
fat
both a and b
none of the above
1 points
question 33
which of the following is not a level of defense in the human body?
physical barriers
non-specific defense mechanisms
specific defense mechanisms
none of the above
1 points
question 34
which of the following is not a barrier to entry?
saliva
tears
mucous membranes
none of the above
1 points
question 35
which of the following is not a sign of inflammation?
swelling
pain
redness
none of the above
1 points
question 36
the system produces antibodies against specific pathogens.
nervous
endocrine
immune
none of the above
1 points
question 37
macrophages are blood cells that continually patrol the body in search of foreign molecules.
red
plasma
white
none of the above
1 points
question 38
vaccines are weakened that prompt the development of antibodies but not the disease.
viruses
bacteria
both a and b
none of the above
1 points
question 39
people with type o blood can donate blood to
only other people with o blood
no one
anyone
none of the above
1 points
question 40
during an allergic reaction, cells release histamine, which starts the response.
excretory
inflammatory
nervous
none of the above
1 points
question 41
autoimmune diseases result when the system attacks and destroys cells and tissues of the body.
immune
nervous
digestive
none of the above
1 points
question 42
animals are heterotrophs that derive their energy from
chemicals
the sun
another organism
none of the above
1 points
question 43
the breakdown of food is accomplished by enzymes.
physical
chemical
mechanical
none of the above
1 points
question 44
ingestion is the stage of digestion.
third
second
first
none of the above
1 points
question 45
the biliary system consists of accessory organs.
reproductive
digestive
cardiovascular
none of the above
1 points
question 46
muscular contractions of the are known as peristalsis.
esophagus
diaphragm
trachea
none of the above
1 points
question 47
once food passes from the mouth and down the it enters the stomach.
trachea
small intestine
esophagus
none of the above
1 points
question 48
the small intestine is where final occurs.
absorption
digestion
both a and b
none of the above
1 points
question 49
the liver sends to the small intestine.
insulin
gastric juices
bile
none of the above
1 points
question 50
movements within the are due to involuntary muscle contractions.
large intestine
anus
esophagus
none of the above
1 points
question 51
which of the following is a macronutrient?
carbohydrates
lipids
amino acids
all of the above
1 points
question 52
exoskeletons are found on the of the body.
outside
inside
both a and b
none of the above
1 points
question 53
muscles for movement attach to the inner surface of the
endoskeleton
exoskeleton
both a and b
none of the above
1 points
question 54
which of the following is a part of the vertebrate skeleton?
lateral
axial
both a and b
none of the above
1 points
question 55
the upper bone of the is the humerus.
spinal column
leg
arm
none of the above
1 points
question 56
the layer of the bones is known as the periosteum.
outer
inner
both a and b
none of the above
1 points
question 57
eventually, the stops, and the cartilage is all converted into bone.
elongation
shortening
contraction
none of the above
1 points
question 58
immovable joints join the bones of the
shoulder
jaw
skull
none of the above
1 points
question 59
when one muscle contracts, what does the other do?
stays still
contracts
relaxes
none of the above
1 points
question 60
within each myofibril there are dense
sarcomeres
z lines
cilia
none of the above
1 points
question 61
motor neuron axons from nerve cells connect to fibers.
ligament
muscle
tendon
all of the above
1 points
question 62
animals exchange via their respiratory systems.
fluids
minerals
gases
none of the above
1 points
question 63
vertebrates use only lungs to exchange gases.
terrestrial
aquatic
amphibian
none of the above
1 points
question 64
gills are typically outgrowths of or clustered strands of filaments.
capillaries
organs
tissue
none of the above
1 points
question 65
the epiglottis prevents food from entering the
esophagus
trachea
stomach
none of the above
1 points
question 66
branch into smaller and smaller tubes known as bronchioles.
vocal cords
alveoli
bronchi
all of the above