BLOOD VESSELS AND LYMPHATIC SYSTEM
SIMILARITIES AND DIFFERENCES
I. Arteries, Veins, Capillaries
SIMILARITIES
3 same layers
DIFFERENCES
-veins have thinner layers
carry blood cells
-capillaries have one layer
-arteries carry oxygenated blood except pulmonary
-veins carry deoxygenated blood except
pulmonary
- capillaries carry both
all are flexible
-veins have valves
-capillaries are for exchange—one cell can pass
-veins take blood to heart
-arteries take blood away from heart
-arteries have higher pressure than veins
-arterial moves through high pressure from heart
pumping & muscle contraction from smooth muscle
-veins move through skeletal muscle movement &
smooth muscle contractions
capillary movement through osmotic pressure
all have lumen (space in middle)
veins lumen larger, arteries smaller
all have measurable pressure (force on walls)
Movement based on external and internal forces
all have smooth muscle layer
II. Lymphatic vs. Cardiovascular
SIMILARITIES
Lymphatic vessels have same three layers
DIFFERENCES
-lymphatic vessel walls are thinner than arteries
Have similar structure to veins including valves
Lymphatic structures have similar movement
of veins
both contain fluid
lymphatic vessels are closely associated with blood
vessels
lymph vessels are very close to capillaries
-lymphatic vessels have anchors that help with
movement of lymph
-called plasma in bloodstream and lymph in lymph
vessels, but it is the same fluid
III. Lymphatic Organs—see notes to fill in
IV, Antigens Vs. Antibodies
SIMILARITIES
DIFFERENCES