3.1.2: Transport In Animals Flashcards
What is the transport medium in invertebrates with an open circulatory system?
Haemolymph
Haemolymph is the fluid that circulates in the open circulatory systems of invertebrates.
What is the body cavity called in animals with an open circulatory system?
Haemocoel
The haemocoel is the primary body cavity in invertebrates where haemolymph is pumped.
What circulatory system do all vertebrates possess?
Closed circulatory system
Closed circulatory systems are found in vertebrates like fish, reptiles, and mammals.
What is the primary function of a circulatory system?
Transport gases and nutrients
Circulatory systems are essential for delivering nutrients and removing waste from cells.
What is the role of the heart in the circulatory system?
Pump the transport liquid
The heart is responsible for moving the transport liquid (blood) around the body.
What type of circulatory system do insects have?
Open circulatory system
Insects have a system where the transport medium is pumped directly into the body cavity.
In a closed circulatory system, where does the transport medium remain?
Inside the blood vessels
In a closed system, the blood remains contained within vessels.
What is the function of haemoglobin in the circulatory system?
Transport oxygen
Haemoglobin is a pigmented protein that carries oxygen in the blood.
True or False: Open circulatory systems transport gases via the transport medium.
False
Gases are transported via a separate tracheal system in organisms with open circulatory systems.
What happens to the transport medium after it exchanges substances at the cells?
Returns to the heart through an open-ended vessel
In open circulatory systems, the haemolymph returns to the heart after nutrient and gas exchange.
What do large animals typically have regarding metabolic rates and surface area to volume ratios?
Higher metabolic rates and lower surface area to volume ratios
These characteristics necessitate efficient transport systems for nutrient delivery and waste removal.
Fill in the blank: A _______ circulatory system has very few transport vessels and pumps the transport medium at low pressure.
Open
Open circulatory systems operate at lower pressures compared to closed systems.
Which types of animals have a closed circulatory system?
All vertebrates and some invertebrates
Examples of invertebrates with closed systems include annelid worms.
What is the primary transport liquid in a closed circulatory system?
Blood
Blood is the liquid that circulates in closed circulatory systems, transporting nutrients and gases.
Which animals are typically associated with open circulatory systems?
Arthropods and mollusks
These groups of invertebrates rely on open systems for circulation.
