Section 48.1 (Exam 4) CV System Flashcards
Circulatory Systems Serve Many Functions
What are the three parts of a circulatory/cardiovascular system?
Muscular pump—the heart
Fluid—blood
Series of conduits—blood vessels
What is the function of a circulatory/cardiovascular system?
It transports heat, hormones, respiratory gases, blood cells, platelets, immune system components, nutrients, and waste products around the body
Which type of animals would have greater need for a circulatory/CV system?
larger, more active animals
What is an example of a large animal that would not require a CV system?
A sponge
What are the two types of circulatory/cardiovascular systems?
Open systems and closed systems
What three features differentiate open and closed circulatory systems?
Whether or not the fluid leaves the vessels
What type of fluid is contained within the vessels
The animals they are present in
What are the features of an open circulatory system?
Circulatory fluid leaves the vessels
The circulatory fluid is hemolymph
It is present in Arthropods and Mollusks
What are the features of a closed circulatory system?
Circulatory fluid does not leave the vessels
The circulatory fluid is blood plasma
It is present in Vertebrates and Annelids
