Animal Circulatory Systems Overview

The video tutorial covers the circulatory systems in animals, focusing on open and closed systems. It explains that insects have an open circulatory system with hemolymph, while most vertebrates, including birds, mammals, reptiles, amphibians, and fish, have a closed circulatory system. The video details the structure and function of these systems, highlighting differences in heart chambers and blood flow. The lesson concludes with a summary and farewell.

What is the primary function of the circulatory system in animals?

• To provide structural support

• To digest food

• To transport nutrients throughout the body

• To produce energy

Which type of circulatory system has blood flowing freely in the body cavity?

• Open circulatory system

• Closed circulatory system

• Single circulatory system

• Double circulatory system

In an open circulatory system, what is the fluid called that fills the body cavity?

• Blood

• Hemolymph

• Lymph

• Plasma

Which animals are known to have a closed circulatory system similar to humans?

• Insects

• Fish

• Birds and mammals

• Reptiles and amphibians

How many chambers does a bird's heart have?

• Five

• Two

• Three

• Four

What is a unique feature of the reptilian heart compared to birds and mammals?

• It pumps blood directly to the lungs

• It has an incomplete septum

• It has a complete septum

• It has two chambers

In amphibians, how many chambers does the heart have?

• Four

• Three

• Five

• Two

What is the main function of the fish's heart?

• To store oxygen

• To pump blood to the gills

• To pump blood to the lungs

• To filter waste

How many chambers are present in a fish's heart?

• One

• Four

• Three

• Two

Where does the fish's heart pump blood to first?

• The liver

• The gills

• The stomach

• The brain