1 Flashcards
Delivers oxygen and nutrients to cells, removes waste, aids in coagulation, regulates temperature, and helps fight diseases.
Circulatory System
TWO MAIN COMPONENTS OF CIRCULATORY SYSTEM
Cardiovascular System
Lymphatic System
Then the oxygen-depleted blood is returned to its origin through the _____
veins
Transports oxygenated blood from the heart and lungs to the body via the ____.
arteries
Cardiovascular System is composed of what
heart, blood vessels, and blood
The Cardiovascular System helps in ______
circulation
Lymphatic System is composed of what
lymph, lymph nodes, and vessels
The Lymphatic System helps in ______
immune defense
a hollow muscular organ that has four chambers
Heart
What are the 4 chambers of the heart
left & right atrium
left & right ventricles
The heart is surrounded by a thin, fluid-filled sac called ______
pericardium
a human heart is roughly the size of a person’s ______.
clenched fist
What are the layers of the heart
Epicardium
Myocardium
Endocardium
Describe Epicardium
thin, watery membrane on the outside layer of the heart
What is the function of Epicardium
covers the heart and is attached to the pericardium
Describe myocardium
thick layer of cardiac muscles in the middle layer of the heart
What is the function of Myocardium
pumps blood into the arteries by contracting
Describe Endocardium
thin layer of epithelial cells in the inner layer of the heart
What is the function of Endocardium
lines the valves and interior chambers
Location of right atrium
upper right chamber
Function of right atrium
receives deoxygenated blood from the body
Location of right ventricle
lower right chamber
Function of right ventricle
receives the blood from the right atrium and pumps in into the pulmonary artery
Location of left atrium
upper left chamber
