Identify and explain the roles of the following components and different circulatory systems Flashcards
What is bulk flow?
It is the pressure gradient that causes a liquid or gas o over from one compartment to another.
Fluid movement is from high hydrostatic to low hydrostatic.
Ease of movement consists of radius and length, how are they related to the flow of volume?
radius have a proportional relationship whereas, length has a inverse relationship with the flow of movement for volume.
What does the term special circulatory system mean?
It is the pumping mechanism that animals gained as they evolved to circulate fluid and vital substances within their body.
What is one fluid and which animals have one fluid?
One fluid is hemolymph, which is essentially the interstitial fluid. Animals that have hemolymph are mollusks,
What are the two fluids?
Blood and lymph.
Porifera
NO specialized circulatory systems, water passes through them and help them pass their fluid in and to environment.
What kind of specialized circulatory system does Mollusks have?
They have a specialized open circulatory system, because they have the heart/pumping mechanism, and the space/hemocoel for hemolymph to travels to. They have a low pressure, since their vessels are not continuous, and fluid can move to the body cavities.
What is one advantage closed circulatory system has over open circulatory system?
In closed circulatory system the blood doesn’t leave the vessels. It only moves through the vessels which causes higher pressure gradient that results in more efficient exchange of vital substances.
Comparisions of open vs. closed circulatory system.
In an open circulatory system, hemolymph circulates in a space called hemocoel, and bathes all the cell in the body with interstitial fluid. It has low pressure because, blood vessels are not continuous, the space creates a low pressure which causes low rate of oxygen exchange, and they have low metabolic unit.
In a closed circulatory system, blood and lymph circulates in blood vessels, and fluid is exchanged with cells only at capillaries. Because blood vessels are continuous there is high pressure, allowing high oxygen exchange and high Metabolic unit rate.
Insects with Open circulatory system and a closed tracheal separate system,
their circulatory system is not used for gas exchange, a separate close system is used for gas exchange. They have low pressure from having an open circulatory system, high O2 exchange due to a closed tracheal gas exchange system and high metabolic unit rate.
Fun fact, earthworms and squids have a closed circulatory system, they have how many hearts?
EW: 5
SQ:3`
What molecules carry O2 and CO2?
Where are they found in the invertebrates?
What 3 groups is it found in?
Respiratory pigments, hemolymph RBC in vertebrates' hemoglobin iron PBC in annelids (hemerythrin iron) BBC in mollusks, arthropod and horseback shoes hemocyanin copper
Our circulatory fluids blood and lymph:
Blood flows through blood vessels, composed of BBC, WBC, platelets, and plasma
Lymph fluids circulated throughout our body, the lymphatic system is parallel to us to circulatory system,
composed of WBC and watery interstitial fluid
