Circulatory Systems Flashcards
A fish has which type of circulatory system?
single
name 4 characteristics of a closed circulatory system
Blood leaves the heart under pressure
Many capillaries
Blood goes back to the heart via venules
Valves ensure blood flows in one direction
What are the main features of a single circulatory system?
Heart pumps deoxygenated blood
Gaseous exchange occurs
Blood leaves
What happens in a double circulatory system?
Right ventricle puns deoxygenated blood to the lungs to receive oxygen, then the oxygenated blood returns to the heart a second time via left ventricle out to the rest of the body.
All particles that are transported in one direction is also known as ..
Mass flow
why can many water molecules join together?
as the negatively charged oxygen of one molecule bonds to the positively charged hydrogen of another. They form hydrogen bonds.
why is cohesion good?
Cohesion enables water to flow
water is liquid at room temp this makes it a good …
transport medium
Hydrophilic molecules ……. In water
Dissolve
