Circulatory System: Description Flashcards
The circulatory systemis made up of a vast ____ of organs and blood vessels that circulate fluid components to cells in thebody.
network
Thecomplete circulatory systemhas two fluid components: blood and ____.
lymph
These fluids include: immune cells, toxins, nutrients, oxygen and other gases, as well as hormones (to and from cells mostly via the capillary beds and the interstitial spaces).
The twocirculatory systems (____ and _____)work together to make sure your body’s tissuescanget what they needandget rid of what they don’t need.
blood, lymph
In the _____ system, oxygenated blood travels from arteries to arterioles then into capillary beds that connect the de-oxygenated blood to venules and then to veins and back into the left atrium.
cardiovascular
Thecirculatory systemconsists of three _____systems: the heart (cardiovascular), lungs (pulmonary), and everything else (systemic).
inter-dependent
The cardiovascular system consists of:
A. Cardiovascular circulation
B. ______ circulation
C. Systemic circulation*
Pulmonary
*the systemic circulation includes the portal system via the liver
Organs important to the cardiovascular system:
- Heart
- _____
- Liver (digestive organs)
Lungs
The _____systemhas three main components: the heart, the blood vessels, and the blood itself.
cardiovascular
The heart is thesystem’spump and the blood vessels are like the delivery ____.
routes
Although no system is entirely closed or open, in closed circulatory systems, theheartpumps blood through vessels that are separate from the ______ fluidof the body.
interstitial
Most vertebratesandsome invertebrates, like earthworms, have a _____ circulatory system.
closed
Most _____ have a closed vascular system in which the circulatory fluid is totally confined within a series of vessels consisting of arteries, veins, and fine linking capillaries.
Insects, most crustaceans, and many mollusks, however, have an open system in which the circulating fluid passes somewhat freely among the tissues before being collected and recirculated.
vertebrates
Compared with closed systems, open circulatory systems generally work at lower ______, and the rate of fluid return to theheartis slower. Blood distribution to individual organs is not regulated easily, and the open system is not as well-adapted for rapid response to change.
pressures
The ______ system is a subset of the circulatory system and immune system.
lymphatic
The lymphaticsystemworks to keep body ___ levels in balance and to defend the body against infections.
fluid
