Cardiovascular System

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The blood picks up oxygen from what structures of the lungs?

Alveoli

When the left ventricle contracts, blood passes into the _______

Aorta

The most inferior, external part of the heart is called the ___________

Apex

The capillaries connect:

Arteries with veins

The blood vessels whose walls are thin enough to allow the exchange of gases between the blood and tissue fluid are _____.

Capillaries

In an ECG, the P wave is caused by _______

Contraction of atrial muscle fibers

Which of the following is not a risk factor for atherosclerosis?

Diet high in unsaturated fats

The heart muscle is composed of three parts. Which of the following is not a layer of the heart?

Epimysium

The SA node relays nerve impulses into the AV bundle of the interventricular septum and the AV node is responsible for the rhythmic contractions of the heart:

False

True or False Arteries are strong, elastic vessels that carry blood to the heart.

False

Veins that drain the abdominal viscera carry blood directly to the atria.

False

myocardial infarction comes from a blockage in an artery that supplies the:

Heart

The cardiovascular system consists of all of the following except:

Lungs

The hepatic portal system (liver) drains the following organs EXCEPT:

Lungs

Ventricular systole occurs during which interval of an ECG?

QT

In an ECG pattern, the T wave is caused by ________

Recovery of ventricular muscle fibers

The circulatory system works directly with the ___________________ system to exchange oxygen and carbon dioxide in the body.

Respiratory system

Which of the following represents the correct sequence of parts through which blood moves from the vena cava to the lungs?

Right atrium, tricuspid valve, right ventricle, pulmonary valve, pulmonary artery

The "pacemaker" of the heart is the:

SA Node

In an ECG pattern, the P-Q interval indicates how long it takes for the cardiac impulse to travel from the ________

SA node to the AV node

The correct sequence of parts that function to carry cardiac impulses is:

SA node, AV node, Bundle of His, Purkinje fibers

Which of the following structures construct of self-contracting (does not require an I puke originating elsewhere) tissue?

Sinoatrial node

The _______ ________ ________ drains deoxygenated blood from the upper body into the atrium

Superior vena cava

An abnormally fast heart rate is termed by:

Tachycardia

The _______ cavity is the large cavities of the upper body that contains the heart and the lungs.

Thorastic

The atrioventricular valves are the mitral and tricuspid valves.

True

Venues continue from capillaries to form veins, which carry blood back to the atria.

True

Which type of blood vessel serves as a blood reservoir?

Vein

The blood pressure in the systemic arteries is greatest during:

Ventricular systole

The blood pressure on the systemic arteries is greatest during:

Ventricular systole

When the ventricular walls contract, the _______

bicuspid and tricuspid valves close

Blood is supplied to the myocardium by means of the _____ arteries.

coronary

The tissue that forms a loose-fitting sac around the heart is the

pericardium

The pulmonary circuit

sends deoxygenated blood to the lungs


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