Anatomy of the Heart
The upper two chambers of the heart.
What are atrium?
The period of ventricular contraction.
What is systole?
The rate at which a ventricle pumps blood is called this.
What is cardiac output?
A sudden and sometimes fatal occurrence of coronary thrombosis, typically resulting in the death of part of the heart muscle.
What is myocardial infarction?
Any of the muscular-walled tubes forming part of the circulation system by which blood which is oxygenated is conveyed from the heart to all parts fo the body.
What are arteries?
The two bottom chambers of the heart.
What are ventricles?
The period of ventricular relaxation.
What is diastole?
Regulation of the heart by neural input, circulating hormones, or any other factor originating from outside the organ.
What is extrinsic control?
An irregular, often rapid heart rate that commonly causes poor blood flow. The heart's upper chambers beat out of coordination with the lower chambers.
What is atrial fibrillation?
any of the tubes forming part of the blood circulation system of the body, carrying in most cases oxygen-depleted blood toward the heart.
What are veins?
The middle layer of cardiac muscle
What is myocardium
The return of blood from the veins to the heart.
What is venous return?
When the function of an organ or tissue is regulated by factors originating within the organ or tissue itself.
What is intrinsic control?
A condition marked by severe pain in the chest often also spreading to the shoulders, arms, and neck, caused by an inadequate blood supply to the heart.
What is angina?
The average pressure in a patient's arteries during one cardiac cycle.
What is mean arterial pressure (MAP)?
The atrium and ventricles of each side are separated by these.
What are atrioventricular valves (AV valves)
This is also known as phase 2, the ventricle are contracting, the volume of blood within them remains constant.
What is isovolumetric contraction?
The difference between end-diastolic volume and end-systolic volume.
What is stroke volume?
A condition in which the force of the blood against the artery walls is too high.
What is high blood pressure?
The endothelial cells possess relatively large pores approximately 60-80 nm in diameter that allow for the rapid diffusion of small water-soluble substances.
What are fenestrated capillaries?
This is located between the left ventricle and the aorta.
What is the aortic valve?
Ventricular pressure rises to a peak and then begins to decline.
What is ventricular ejection?
Significant in minute-to-minute regulation of cardiac function.
What is epinephrine?
A hole in the septum between the heart's upper chambers.
What is an Atrial septal defect (ASD)?
These capillaries are found in the spleen, liver, and bone marrow areas where proteins and cells must cross the endothelium.
What are discontinuous capillaries?