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Circulatory System
Circulatory System
The dividing muscular wall between the atrium and the ventricles.
What is the septum?
What is cardio?
-Lower chambers of the heart; pump blood out of the heart; very thick, muscular walls to allow them to pump blood
What are ventricles?
The first number in a blood pressure reading indicating the pressure against the arteries when the ventricles contract.
What is the systolic blood pressure?
Fatty material that can build up in your blood vessels.
What is plaque?
Name of the heart muscle itself
What is the myocardium?
carries oxygen-rich blood from the heart to the rest of the body and oxygen-poor blood back to the heart
What is Systemic Circuit
Relaxed filling of ventricles.
What is diastole?
An electronic device that is implanted to signal the heart to beat when the heartbeat is too slow or irregular.
What is a pacemaker?
The second blood pressure reading indicating the pressure against the artery walls when the ventricles relax.
What is diastolic blood pressure?
-carry blood away from the heart to small vessels in the body tissues -very thick walled and muscular to resist the pressure of the blood
What are arteries?
largest veins that bring oxygen-poor blood to the heart
What are the superior and inferior vena cava?
Inactive, not getting a lot of exercise.
What is sedentary?
This tends to push molecules in to the lumen of the capillaries
What is osmotic pressure?
These keep blood from flowing back into the ventricles
What is Aortic and Pulmonary Valves?
-Smallest blood vessels that are in close contact with body tissues -connect arteries to veins -very thin walled to allow gases, nutrients, and wastes to diffuse in and out
What are Capillaries?
The upper chambers of the heart which receive blood returning to the heart.
What are the atria?
Thin tissue that lines the insides of the wall of the heart.
What is the endocardium?
Nodal tissue responsible for direct communication with the Bundle of His
What is the AV node?
A measurement of how hard the blood is pushing against the arteries.
What is blood pressure?
-carry blood from body tissues to the heart -large but not as thick as arteries because the muscle layer is not a lot of pressure in the blood -contain valves to allow blood to flow in one direction
What are veins?
Also known as erythrocytes
What are red blood cells?
These carries blood to lungs from the heart
What are the pulmonary arteries?
The artery that takes blood to your head.
What is the carotid artery?
This contracts the venticles
What are purkinje fibers?
Used to help support platelets for clotting
What is fibrin?
Excessive localized enlargement of an artery caused by weakening of an artery wall
What is an aneurysm?
The protective sac surrounding the heart that holds the heart in place.
What is the pericardium?
The largest artery that descends down towards your legs.
What is the descending aorta?