Chapter 8. Cardiovascular System Flashcards
The pacemaker of the heart is the?
SA node
Which vessels carry blood away from the heart?
Arteries
Coronary arteries supply blood to the?
Myocardium
The sac containing the heart it’s called the?
Pericardium
Which structure pumps blood into the aorta?
Left Ventricle
Which structure received deoxygenated blood from the vena cava?
Right atrium
Which structure contains blood with the highest oxygen concentration?
Coronary arteries
In which order do conduction impulses Pass through these structures, causing the heart to contract?
SA node, AV node, AV bundle, Purkinje Fibers
Which valve is located between the right atrium and right ventricle?
Tricuspid
Which circular muscle found in tubular structures regulates the passage of substances?
Sphincter
Which vessels emerge from the aorta to supply the heart muscle with blood?
Coronary arteries
Which microscopic vessel enables nutrients and oxygen to pass into the surrounding tissues?
Capillary
Which serous membrane lines the four chambers of the heart and its valves?
Endocardium
What is the contraction phase of the heartbeat that forces blood into the aorta and pulmonary arteries?
Systole
What is the flattened structure that forms a portion of the heart valve?
Leaflet
The combining form vascul/o means:
Vessel (usually blood or lymph)
The CF that means narrowing, stricture is:
Sten/o
The CF atri/o means:
Atrium
The CF ather/o means:
Fatty plague
Phleb/o
Vein
Sept/o
Septum
Vas/o
Vessel; vas deferens; duct
Arteri/o
Artery
Lip/o
Fat
Embol/o
Embolus
-cardia
Heart condition
-graphy
Process of recording
-gram
Record, writing
Extra-
Outside
Endo-
In, within
A mass of u dissolved matter circulating in blood or lymphatic channels until it becomes lodged in a vessel is called a:
Embolus
Oxygen deficiency in surrounding tissues is called:
Ischemia
Blockage of a vessel is called a:
Occlusion
Chest pain associated with coronary artery disease is called:
Angina pectoris
Back flow of blood in the heart is called:
Regurgitation
The cardiovascular system is composed of the?
Heart, blood, vessels
What is the center of the thoracic cavity between the lungs, where the heart is located called?
Mediastinum
The heart pumps blood containing oxygen, nutrients, and other vital products to body cells through a vast network of blood vessels called the?
Arteries
Blood returns to the heart to blood vessels called?
Veins
Three major types of blood vessels are the?
Arteries, capillaries, veins
Pulse-
The surge of blood felt in the arteries when blood is pumped for the heart.
Arterial walls
Strong, flexible. Composed of 3 parts: tunica externa, tunica media, tunica intima
Describe the profuse bleeding when an artery is cut?
The profuse bleeding is due to the high pressure associated with the pumping of the heart. (Bright red)
The wall that divides the heart into right and left sides known as the?
Interventricular Septum
Arterial blood (except for blood found in the pulmonary artery) is highly.
Oxygenated
Arterial blood appears?
Red
Microscopic vessels, that join the arterial system with the venous system. (Functionally the most important vessels)
Capillaries
Which vessels return blood to the heart?
Veins
Veins use other methods of returning blood to the heart including:
- Skeletal Muscle Contraction, 2. Gravity, 3. Respiratory Activity, 4. Valves
The heart is contained in a sac called the? Which is composed of 3 distinct tissue layers.
Pericardium
List the three (3) layers and include the location of each layer.
Epicardium- outer most layer of the heart
Myocardium- muscular inner middle layer of the heart
Endocardium-inner deep layer
The heart is a 4 chambered muscular pump. List the UPPER CHAMBER and function.
Left and Right Atrium
Function: collect blood
Which upper chamber has a higher concentration of oxygen?
Let Atrium
Which upper chamber has a lower concentration of oxygen?
Right Atrium
List the LOWER CHAMBERS and function:
Right & Left Ventricle
Function: pump blood from the heart
Which lower chamber has a higher concentration of oxygen?
Left Ventricle
Which lower chamber has a lower concentration of oxygen?
Right Ventricle
List the two largest veins in the human body that return deoxygenated blood to the heart.
Superior & Inferior Vena Cava
Trace a drop of blood through the heart and into the body. Start with deoxygenated blood from the body returns to the heart.
S & I vena cava (no 02), Right atrium, Tricuspid valve, Right Ventricle,Pulmonary Valve,R & L pulmonary arteries (no 02), lungs (pick up 02), 2L & 2R pulmonary veins, Left atrium, Mitral Valve, Left Ventricle, Aortic Valve, Aorta, smaller arteries all over body.
The myocardium receives its own blood supply from?
Coronary Arteries
The heart contains conductive tissue called the? Also where is it located and what is its function:
SA Node
Location: Right Atrium
Function: sets basic pace for cardiac rate.
Which structure is know as the heart’s PACEMAKER?
SA node
Where is the location of the AV node?
At the base of the right atrium
QRS complex
Is the depolarization of the atria (contraction)
List the proper sequence of structure involvement for contraction impulse.
SA node, AV node, bundle of His, Perkinje Fibers
Define Electrocardiography
Process of recording the electrical output of the heart
Systole
Contraction
Diastole
Relaxation
What are some factors that influence blood pressure:
Resistance of blood flow in blood vessels Pumping action of the heart Thickness of blood Elasticity of arteries Quantity of blood in the vascular system
Define Hypertension and give an example
Increased blood pressure
140-systole ___________
90- diastole
Define hypotension and give example
Decreased blood pressure
100-systole
___________
60-diastole
What is an atheroma?
Fatty plague- composed of cholesterol, lipids, and cellular debris
Define ischemia
Oxygen deficiency in tissue
Define thrombosis
Clot
Define aneurysm
Bulging or dilation of the walls a blood vessel. (Usually an artery)
List major risk factors of atherosclerosis
Hyperchlosterolemia, age, genetics, smoking, hypertension, diabetes
What is the medical term for “a thin mesh tube” placed in the arterial wall after angioplasty.
Stent
Soft blowing sound (usually associated with blood valvular action) is heard on auscultation is a:
Bruit, murmur