40. Circulatory System
Circulatory and Respiratory Anatomy
Multiple Choice
Multiple ChoiceAn open circulatory system __________.
A
is less common in crabs and beetles than in mice and snakes
B
unlike a closed circulatory system, does not rely on muscle contraction
C
restricts the backflow of blood by valves in the trachea
D
has no valves
E
allows interstitial fluid to mix freely with vascular fluid
607
views
Related Videos
Related Practice
Showing 1 of 38 videos