All of the following are respiratory surfaces EXCEPT for
tracheae of a fly.
air sacs of birds.
skin of earthworms.
gills of fish.
alveoli of dogs.
air sacs of birds.
All of the following are true except:
Red blood cells are responsible for gas transport.
A centrifuged sample of blood would yield a composition of 45% plasma and 55% cells.
The diastole is the relaxation phase of the heart beat where the pressure on the walls of the
blood vessels is lowest.
The systole is the contraction phase of the heart beat where the pressure on the walls of the
blood vessels is highest.
A centrifuged sample of blood would yield a composition of 45% plasma and 55% cells.
,All of the following are true of the SA node EXCEPT that it
is the pacemaker.
is influenced by nerve impulses and hormones.
directly stimulates the atria.
directly stimulates the ventricles.
directly stimulates the ventricles.
Although amphibians use gills during their aquatic larval stage and develop simple, saclike
lungs as adults, some may also depend on an additional mechanism for gas exchange. What
is it?
inflatable air sacs that store air
diffusion of gases into and out of capillaries through their thin, moist skin
countercurrent exchange mechanisms
thin projections of the body surface that protrude into the surrounding water
diffusion of gases into and out of capillaries through their thin, moist skin
,Alveoli are ideal for gas exchange for all the following reasons EXCEPT
They are very fragile.
They are moist.
They are near a blood supply.
They are one cell layer thick.
They are very fragile.
The animals most like the ancestral protist colonies that likely gave rise to all animals are
arthropods.
chordates.
nematodes.
sponges.
echinoderms.
sponges.
, An animal with a pseudocoelem has
has a space within the mesoderm in addition to a space were digestion occurs
has a space between the ectoderm and the mesoderm in addition to a space were digestion
occurs
no space inside it's body
has a space between the endoderm and the mesoderm in addition to a space were
digestion occurs
has only a space were digestion occurs
has a space between the endoderm and the mesoderm in addition to a space were
digestion occurs
A(n) ___ is a body cavity that is not completely surrounded by mesoderm-derived tissue.
pseudocoelom
tracheae of a fly.
air sacs of birds.
skin of earthworms.
gills of fish.
alveoli of dogs.
air sacs of birds.
All of the following are true except:
Red blood cells are responsible for gas transport.
A centrifuged sample of blood would yield a composition of 45% plasma and 55% cells.
The diastole is the relaxation phase of the heart beat where the pressure on the walls of the
blood vessels is lowest.
The systole is the contraction phase of the heart beat where the pressure on the walls of the
blood vessels is highest.
A centrifuged sample of blood would yield a composition of 45% plasma and 55% cells.
,All of the following are true of the SA node EXCEPT that it
is the pacemaker.
is influenced by nerve impulses and hormones.
directly stimulates the atria.
directly stimulates the ventricles.
directly stimulates the ventricles.
Although amphibians use gills during their aquatic larval stage and develop simple, saclike
lungs as adults, some may also depend on an additional mechanism for gas exchange. What
is it?
inflatable air sacs that store air
diffusion of gases into and out of capillaries through their thin, moist skin
countercurrent exchange mechanisms
thin projections of the body surface that protrude into the surrounding water
diffusion of gases into and out of capillaries through their thin, moist skin
,Alveoli are ideal for gas exchange for all the following reasons EXCEPT
They are very fragile.
They are moist.
They are near a blood supply.
They are one cell layer thick.
They are very fragile.
The animals most like the ancestral protist colonies that likely gave rise to all animals are
arthropods.
chordates.
nematodes.
sponges.
echinoderms.
sponges.
, An animal with a pseudocoelem has
has a space within the mesoderm in addition to a space were digestion occurs
has a space between the ectoderm and the mesoderm in addition to a space were digestion
occurs
no space inside it's body
has a space between the endoderm and the mesoderm in addition to a space were
digestion occurs
has only a space were digestion occurs
has a space between the endoderm and the mesoderm in addition to a space were
digestion occurs
A(n) ___ is a body cavity that is not completely surrounded by mesoderm-derived tissue.
pseudocoelom
