Circulatory System Flashcards
The ______ is composed of four chambers of the heart divided into right and left atrial chambers and right and left ventricular chambers.
cardiovascular system
The right side of the heart, containing the ________, comprises the ______ delivering blood to the lungs for oxygenation and release of carbon dioxide.
right atrium and right ventricle
pulmonary circuit
The oxygenated blood is returned To the _____ of the heart and is pumped out of the _____ to be distributed to the tissues of the body
left side
left ventricle
to deliver oxygenated blood to cells and tissues
cardiovascular system
to return venous blood to the lungs for gaseous exchange.
cardiovascular system
transports oxygen and nutrients to the tissues
cardiovascular system
Carries away CO2 and waste products from the tissues
cardiovascular system
Circulates hormones from their site of synthesis to their target cells
cardiovascular system
Regulates body temperature
cardiovascular system
cardiovascular system includes:
I. Blood Vascular System
II. Lymphatic Vascular System
Blood Vascular System:
- Heart
- Arteries
- Veins
- Capillaries
Lymphatic Vascular System:
- Lymphatic Capillaries
- Lymphatic Vessels
- Lymphatic Ducts
is a muscular pump that propels blood at high pressure around the body through the blood vessels.
HEART
The heart is surrounded by a fibro-serous sac called
pericardium
heart is a 4-chambered muscular organ containing:
2 atria
2 ventricles
receives the blood
2 Atria
pumps the blood to the lungs or tissues
2 Ventricles
COMPONENTS OF THE HEART
- Cardiac Layers (tunicae)
- Fibrous Skeleton
- Heart Valves
- Impulses generating and impulse conducting system
Cardiac Layers (tunicae):
a. Endocardium (tunica intima)
b. Myocardium (tunica media)
c. Epicardium (tunica adventitia)
LAYERS OF THE HEART
A. ENDOCARDIUM (TUNICA INTIMA)
B. MYOCARDIUM (TUNICA MEDIA)
C. EPICARDIUM (TUNICA ADVENTITIA)
lines the lumen of the heart
ENDOCARDIUM (TUNICA INTIMA)
Composed of simple squamous epithelium (endothelium)
ENDOCARDIUM (TUNICA INTIMA)
underlined by subendocardium
ENDOCARDIUM (TUNICA INTIMA)
there is a small layer of loose connective tissue and some adipose tissue
ENDOCARDIUM (TUNICA INTIMA)
consists of layers of cardiac muscles
MYOCARDIUM (TUNICA MEDIA)
contracts to propel blood into the arteries for distribution to the tissues
MYOCARDIUM (TUNICA MEDIA)