Heart Blood Vessels Control of the Heart Heart Diseases Random Heart Questions

What are the sounds of the heart caused by?

Closing of the valves

What are the chambers called that receive blood?

Atrium

What does a EKG measure?

The electric activity of the heart.

How is cardiac output measured?

Stroke volume or Heart rate

What is the bulk of the heart made up of?

Myocardium

Which blood vessels have the lowest blood pressure?

Vena Cava

Which blood vessels contain one way valves?

Veins

Why are arteries thicker than veins?

To handle the higher blood pressure.

How is blood flow through the capillaries controlled?

By the precapillary sphincter and CO2 levels.

Which veins carry oxygenated blood?

Pulmanory Veins

What does SA node stand for?

Sinoatrial node

Which cluster of cells are known as the “pace maker” for the heart?

Sinoatrial node

What hormones increase the heart rate and comes from the adrenal gland?

Epinephrine

Which hormone decrease blood pressure by stimulating loss of water by excreting sodium?

Atrial natriuretic factor

Which receptors are present in the major blood vessels that detect changes in blood pressure?

Barorecptors

What is an aneurysm?

Bulging of an arterial wall.

What is it called when your heart races up to 300 BPM?

Heart Flutter

What is hardening of the arteries also known as?

Arteriosclerosis

What is elevated blood pressure known as?

Hypertension

What is a leaky valve called?

Heart Murmur

The AV valve between the left atrium and ventrical?

Bicuspid or Mitral valve

What are the blood vessels called that go to and from the kidneys?

Renal

The name the nerve from the medulla oblongata that regulates the heart?

Vagus

What effects cardiac output?

Stroke volume and heart rate

The only artery to carry deoxygenated blood?

Pulmonary Artery