Cardiovascular System Flashcards
dependent on their daily supply of nutrients, oxygen, water and minerals, as well as removal of CO2 and other metabolic wastes products
animal
– transports all substances to the body
circulatory system
in them, their circulatory system is usually absent because simple diffusion from their watery environment allows these activites to take place
protists
complex forms of animals rely on a transporting system which consist of:
heart
blood
blood vessels
characterized by the absence of capillaries
lacunar circulation
occurs mostly among invertebrates in molluses, and arthropods such as insects
lacunar circulation
blood in an open system circulation
hemolymph
pumps out the hemolymph, and is usually an enlarged blood vessel
heart
type of pressure in the heart when the blood is pumped out into the body cavity
low pressure
body spaces that returns blood into the heart after it mixes with interstitial fluid and bathes cells of the body
hemocoel
blood remains within a completely enclosed system of vessels
closed system
system that never comes in direct contact with tissue cells
closed system
materials move between the blood and interstitial fluid through these
capillaries
in a closed system, the blood flows in this kind of pressure
high pressure
occurs among annelids, squids, and among vertebrates such as fishes, amphibians, reptiles, birds, and mammals
closed system
among them, gas, nutrient, and waste exchange happens through diffusion
protozoans
circulate water from the external environment through their bodies, instead of circulating an internal fluid
sponges
possesses gastrovascular cavity containing water that provides oxygen and serves as reservoir of carbon dioxide and wastes, simple body movement moves the fluid
cnidarians
such as rotifers and nematodes use the coelomic fluid of their body cavity for the transport of nutrients, gases, and waste products
pseudocoelomates
their body movement produces adequate transport
pseudocoelomates
in them a circulatory system is present in which blood termed as hemolymph is being pumped by the heart into spaces known as hemocoel
mollusks and insects
composed of blood, blood vessels, and a muscular pump which is the heart
cardiovascular system
pumpless system of vessels that aid the cardiovascular system in its function
lymphatic system
composed of lymph, lymphatic vessels, and structures and organs containing lymphatic tissues
lymphatic system