15.3 - Circulatory Pathways
Enroll to start learning
You’ve not yet enrolled in this course. Please enroll for free to listen to audio lessons, classroom podcasts and take practice test.
Practice Questions
Test your understanding with targeted questions
Define an open circulatory system.
💡 Hint: Think about how this system is different from closed.
How many chambers does a fish heart have?
💡 Hint: Consider the simplest type of vertebrate.
4 more questions available
Interactive Quizzes
Quick quizzes to reinforce your learning
What characterizes an open circulatory system?
💡 Hint: Think of insects and their circulation.
True or False: All vertebrates have a 4-chambered heart.
💡 Hint: Recall the heart structures across different vertebrate groups.
2 more questions available
Challenge Problems
Push your limits with advanced challenges
Given three organisms, an insect, a bird, and a fish, classify them based on their circulatory systems and explain your reasoning.
💡 Hint: Consider the environmental adaptations of each organism.
Describe how a double circulation system benefits mammals compared to a single circulation system found in some lower vertebrates.
💡 Hint: Think about the metabolic demands of active animals.
Get performance evaluation
Reference links
Supplementary resources to enhance your learning experience.