1 cardiovascular a&p
Where would one find an atrioventricular valve?What is its function?
Between the Right Atrium and Ventricle, and between the Left Atrium and Ventricle.To provide a one-way flow of the blood
What are the types of arteries?
Elastic Muscular
Deoxygenated blood from the systemic system enters which chamber of the heart first? Then where does it go?
Enters the right atrium then is pumped into the right ventricle.
Where would one find the Jugular vein?
In the neck
What makes the Dub sound?
Produced as the semilunar valves close,
What is the difference between Systole and Diastole?
Systole occurs when the heart contracts to pump blood out, and diastole occurs when the heart relaxes after contraction. Some say a heartbeat can be described as sounding like "Lubb-Dub"
The three layers of the wall of the heart are
The Epicardium (Outer layer) Myocardium (Middle layer) Endocardium (Inner Layer) Which one is muscular?Myocardium
First, explain what a Venous Valve is. Second, describe what layer of tissue it forms. Third, articulate its function.
Venous valves consist of two elastic flaps of tissue that open and close in alternation.It forms the Tunica Intima tissue and its function is to prevent blood from flowing backwards.
This valve is also known as the mitral valve
bicuspid valve
This valve is between the left atrium and left ventricle
bicuspid valve
A "QRS"
complex is...indicates ventricular depolarization and "hidden" atrial repolarization
This valve is between the right ventricle and right atrium
tricuspid valve
This valve prevents backflow of blood into the right atria
tricuspid valve
Define ECG and explain what it measures.
A ECG is a test that measures the electrical activity of the heartbeat .
Receives the impulse from the SA node:
AV node
This valve prevents backflow of blood into the left ventricle
Aortic valve
This valve separates the left ventricle from the exiting vessel
Aortic valve
List the three types of blood vessels:
Arteries Capillaries veins
Do Arteries carry blood to the heart or away from the heart? Veins?
Arteries carry blood away from the heart; veins carry blood toward the heart.
After blood leaves the Left Ventricle, what part of the circulating system does it enter? Is the blood oxygenated?
It enters the systemic system and the blood is oxygenated
When blood leaves the right ventricle of the heart is it oxygenated or deoxygenated? Where is this blood heading? Why?
It is deoxygenated and its headed to the Right Atrium to be pumped to the Right Ventricle and back to the systemic circuit.
When blood returns to the heart from the Pulmonary Circuit, is it oxygenated or not? What chamber of the heart does it enter? Then where does it go?
It is oxygenated and it goes to the Left Atrium Chamber then to the Left Ventricle Chamber and pumped to the body.
The name of the lining around the heart is _____-_ and is a Serous kind of membrane.
Pericardium
Do Pulmonary arteries carry oxygenated or deoxygenated blood? What about Pulmonary Veins?
Pulmonary arteries carry deoxygenated blood, pulmonary veins carry oxygenated blood.
The major function of the four valves of the heart includes:
Pulmonary valve, Aortic valve, bicuspid valve, tricuspid valve.
Which is a triscupid and which is a bicuspid?
The left atrium is a bicuspid and the right atrium is a tricuspid.
Which is larger: The right Ventricle, or the left Ventricle? Why?
The left ventricle is more muscular than the right ventricle because it pumps the blood at a higher pressure.
After the blood crosses the mitral valve, where does it go?
To the left ventricle
The ______ are small vessels that carry oxygenated blood in the systemic circulation.
arteries
This valve prevents backflow of blood into the left atria
bicuspid valve
The relaxation period of the heart is called the _______________.
distole
The _______________ is thin and smooth and is the inner most layer of the heart.
endocardium
Where are the semilunar valves? What is their function?
entrance to the pulmonary trunk and the entrance to the aorta and their function is to prevent blood from flowing back into the left and right atriums
Systolic blood pressure.
indicates how much pressure your blood is exerting against your artery walls when the heart beats.
Diastolic Blood Pressure.
indicates how much pressure your blood is exerting against your artery walls while the heart is resting between beats.
A "T" wave is...
indicates ventricular repolarization
A "P" wave
is...indicates atrial depolarization
What makes the Lubb sound?
produced as the AV valves close
List the four chambers of the heart.
right atrium right ventricle left atrium the left ventricle
Known as the pacemaker of the heart:
sinoatrial node
The amount of blood ejected from the heart in a single heartbeat is called the ____ ___________.
stroke volume
Describe the conducting system.
system where a network of specialized cardiac muscle cells that initiates and distributes electrical impulses.
The contraction period of the heart is called the _______________.
systole
What is the difference between the Pulmonary Circuit and the Systemic Circuit?
the pulmonary circuit pumps blood to and from the lungs , the systemic circuit pumps blood to and from the rest of the body tissues.
Name which small vessels carry deoxygenated blood in the systemic circulation.
veins
The purpose of the Coronary Arteries and Veins is to .responsible for carrying nutrient-rich, oxygenated blood from the left ventricle to the myocardium;
while the coronary veins take nutrient - poor deoxygenated blood away from the myocardium and to the right atrium.