Biology - Multiple Choice: Part 2 Cardiovascular System

The exchange of oxygen/carbon dioxide, ions, and other nutrients occur at?

Capillaries

Tachycardia

a rapid heart rate (over 100 BPM)

Which is the correct path the impulse takes in the intrinsic conduction system of the heart?

SA node, AV node, AV bundle, right and left bundle branches, Purkinje fibers

Which is NOT correct about Blood Flow?

Deoxygenated blood returns to the heart in the pulmonary veins

The purpose of function of the circulatory system.

Transport gases and nutrients around the body

When blood is pushed through blood vessels, the blood pushes against the walls. This push is called blood pressure. When vessels are clogged with fat, the blood must work harder to push the blood through the body. In this case, would you expect a high or low blood pressure?

High Blood Pressure

Along with chambers, the heart also has WHAT, which are a flap of tissue that open and close, but only let blood flow in one direction?

Valves

Systole

The contraction of the heart

Of all options, which are transported by the circulatory system?

• blood

• water

• waste

• nutrients

Which is NOT paired correctly?

Pericardium - wall that divides the right and left sides of the heart.

Pulmonary Trunk

The vessels that carry blood to the lungs to pick up oxygen

Which is NOT correct about heart valves

The mitral valve is on the right side of the heart

Aorta

The large artery that leaves the heart with oxygenated blood

Arteries

The largest blood vessels that carry blood away from the heart. They also have lots of oxygen.

Which is NOT true about Blood vessels?

Veins have a smaller lumen than arteries

Larger veins have WHAT to help prevent backflow of blood?

Valves

Veins are full of?

Deoxygenated blood

Left Ventricle

The heart chamber that pumps blood with the greatest amount of force.

Which is NOT correct about the blood pressure?

Blood Pressure is controlled by the sinoatrial node

Coronary Arteries

The vessels that supply the heart with oxygenated blood.

In comparing the an artery and vein, you would find that?

The artery wall is thicker.

Arteries are high in WHAT, while capillaries are high in WHAT?

oxygen and carbon dioxide

The SA node is in charge of?

The Right/Left atria

The path of blood flow within the systemic circulation is?

arteries, arterioles, capillary beds, venules and veins

The primary supplier of oxygen-poor blood to the heart is/are the?

Superior and Inferior Vena Cava

If the circulatory system is a delivery service, then blood vessels would be?

Highways

Veins

The largest blood vessels that carry blood back to the heart and lungs. They also have lots of carbon dioxide.

Which is NOT matched correctly?

first “lub” heart sound - caused by closing the semilunar valves.

Cardiac Cycle in order from first to last.

• 1: Atrial Diastole - the blood flows through the atria into the ventricles. Semilunar valves are closed.

• 2: Atrial Systole - the atria contract forcing blood into the ventricles

• 3: Ventricular Systole - AV valves close, semilunar valves open; blood is ejected from the ventricles

• 4: Ventricular Diastole: semilunar valves close

^{How many chambers does the heart have?}

4

Ischemia

A lack of adequate blood supply to the heart muscle

Heart Attack

blood clot in a coronary artery; also called myocardial infarction

Atrial Septal Defect

congenital defect that leaves a hole between the right and left atria

Hemorrhagic stroke

ruptured blood vessel in the brain

Ischemic Stroke

blood clot in the vessels of the brain

Atherosclerosis

the buildup of plaque in blood vessel walls

High Blood Pressure

also called hypertension, risk factors include smoking, obesity and lack of exercise

Cardia output

the amount of blood pumped out by the heart in one minute

The EKG wave that represents depolarization of the atria is?

P WAVE

The QRS complex on an EKG represents WHAT of the ventricles?

depolarization

Larger veins have WHAT to prevent backflow of blood

Valves

A slow heart rate of less than 60 bpm is known as??

bradycardia