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32 Cards in this Set

  • Front
  • Back
Open circulatory system
Closed circulatory system

Cells not in direct contact with external environment
Aorta - blood is pumped here, and it branches out into arteries

Arteries branch into arterioles and then into small capillaries
Right side of the heart
Pumps deoxygenated blood into pulmonary circulation (toward lungs)
Left side of the heart
Pumps oxygenated blood into systemic circulation (throughtout body)
-Upper two chambers of the heart.

-thin walled
-Lower two chambers of the heart

-Very muscular
Atrioventricular valves
-Located between the atria and ventricles on both sides of the heart.

-prevents backflow of blood into the atria.
Tricuspid Valve
-Valve on right side of the heart (from right atrium to right ventricle)

-Has three cusps
Mitral Valve
-Valve on Left side of heart(from left atrium to left ventricle)

-has two cusps
Semilunar valves
-Located between the left ventricle and the aorta and between the right ventricle and the pulmonary artery.
Period of the heartbeat where the ventricles contract.
Period of the heartbeat during which the cardiac muscle relaxes and blood drains into all four chambers.
Cardiac Output
Total volume of blood the left ventricle pumps out per minute.

= heart rate (# beats per minute) X stroke volume (volume of blood pumped out of the left ventricle per contraction)
Sinoatrial (SA) node
where the cardiac contraction originates in, and is regulated by.

it is found in the wall of the right atrium
Atrioventricular (AV) node
The impulse from the SA node arrives, and conducts slowly, allowing time for all the chambers to fill with blood.
Bundle of His (AV bundle)
The impulse from the AV node. The impulse branches into the right and left bundle branches.
Purkinje fibers
Impulse comes from the bundle of HIS, and generates a strong contraction.
Three types of blood vessels
1. Arteries

2. Veins

3. Capillaries
-Thick walled, muscular, elastic vessels.

-Transport oxygenated blood away from heart.

(Pulmonary arteries transort deoxygenated blood from heart to lungs)
-Thinly walled, inelastic vessels

-Transport deoxygenated blood towards the heart

(pulmonary veins carry oxygenated blood from lungs to heart)
-Have smallest diameter of all the vessels

Respiratory gases, nutrients, enzymes, hormones, and wastes can readily diffuse.
Lymphatic system
Secondary circulatory system.

They transport interstitial fluid (lymph) keeping fluid vessels constant in the body.
3 components of blood
1. Erythrocytes

2. leukocytes

3. Platelets
-red blood cells

-Formed in the bone marrow
-B and T cells

-Act as protective cells

Involved in phagocytosis of foreign matter, immune response, production of antibodies (B cells), and cytolysis of infected cells (T cells)
Involved in clot formation
-Platelts come into contact with exposed collagen: release chemical to cause neighboring platelets to adhere to one another.

-Platelets and damaged tissue release thromboplastin

-Thromboplastin, with help from calcium and vitamin K, converts prothrombin (inactive plasma protein) into thrombin.

-Thrombin converts fibrinogen into fibrin.

-Fibrin threads coat damaged area and form clot.
A type blood
Antigen: A

Antibody: anti-B

Can Donate to: A and AB

Can Receive From: A and O
B type blood
Antigen: B

Antibody: anti-A

Can Donate To: B and AB

Can Receive From B and O
AB type blood
Antigen: A and B

Antibody: None

Can Donate To: AB only

Can Receive From: Universal Acceptor
O type blood
Antigen: None

Antibody: anti A and anti B

Can Donate To: Universal Donor

Can Receive From: O only