Circulatory System Quiz

<p>Blood flows within a network of vessels, like arteries and veins</p> Signup and view all the answers

<p>It operates at low pressure, suitable for organisms with low metabolic rates</p> Signup and view all the answers

<p>The circulatory system transports oxygen, nutrients, hormones, and waste products throughout the body. It also helps regulate body temperature and plays a role in defending against infections.</p> Signup and view all the answers

<p>In simple multicellular animals like sponges, material exchange occurs through diffusion directly across the cell membrane, as they have no circulatory system.</p> Signup and view all the answers

<p>Hemolymph is the circulatory fluid (blood and tissue fluid) that fills body cavities in organisms with an open circulatory system. It is pumped through vessels into spongy chambers called sinuses, where it bathes body tissues before getting collected and returned back to the heart.</p> Signup and view all the answers

<p>In an open circulatory system, blood is not confined to vessels and flows directly to body cavities, while in a closed circulatory system, blood flows within a network of vessels like arteries and veins.</p> Signup and view all the answers

<p>A low pressure circulatory system is ideal for organisms with low metabolic rates because it allows for efficient nutrient exchange and circulation without requiring a high pressure pumping system.</p> Signup and view all the answers