Human Blood Cells and Circulation Quiz

<p>Macrophage (D)</p> Signup and view all the answers

<p>Erythrocyte (C)</p> Signup and view all the answers

<p>Transport oxygen to tissues (B)</p> Signup and view all the answers

<p>Proteins (A)</p> Signup and view all the answers

<p>Iron (Fe) (B)</p> Signup and view all the answers

<p>Defense against pathogens (D)</p> Signup and view all the answers

<p>Plasma (C)</p> Signup and view all the answers

<p>Arterioles link arteries to capillaries and are much smaller. (A)</p> Signup and view all the answers

<p>Veins have valves to prevent backflow of blood. (A)</p> Signup and view all the answers

<p>To serve as the site for the exchange of gases and nutrients. (B)</p> Signup and view all the answers

<p>Arteries typically carry oxygenated blood, while veins carry deoxygenated blood. (B)</p> Signup and view all the answers

<p>To control blood flow to specific tissues based on their needs. (A)</p> Signup and view all the answers

<p>To prevent backflow of blood through the AV valves (B)</p> Signup and view all the answers

<p>It is the largest artery and carries oxygen-rich blood from the heart. (A)</p> Signup and view all the answers

<p>Left ventricle - Oxygen-rich blood to aorta (B)</p> Signup and view all the answers

<p>The superior vena cava collects blood from the upper body, and the inferior vena cava collects blood from the lower body. (B)</p> Signup and view all the answers

<p>Right atrium (C)</p> Signup and view all the answers

<p>It carries deoxygenated blood from the heart to the lungs. (B)</p> Signup and view all the answers

<p>Arteries carry oxygenated blood from the heart to the body. (C)</p> Signup and view all the answers

<p>Water, vitamins, and glucose (C)</p> Signup and view all the answers

<p>Deoxygenated blood from the body (D)</p> Signup and view all the answers

<p>Renal artery (A)</p> Signup and view all the answers

<p>Atrial systole ends (A)</p> Signup and view all the answers

<p>All heart valves are closed (B)</p> Signup and view all the answers

<p>S2 (B)</p> Signup and view all the answers

<p>110 beats per minute (D)</p> Signup and view all the answers

<p>Right ventricle has lower pumping pressure than left ventricle (A)</p> Signup and view all the answers

<p>At 0.5 seconds when the pressure remains at 8 (D)</p> Signup and view all the answers

<p>The AV valve is still open while the left ventricle pressure rises (B)</p> Signup and view all the answers

<p>Pressure in the left ventricle drops below aortic pressure (C)</p> Signup and view all the answers

<p>0.5 seconds (B)</p> Signup and view all the answers

<p>It remains constant at 75 (A)</p> Signup and view all the answers

<p>Ventricular Systole (A)</p> Signup and view all the answers

<p>They are closed. (A)</p> Signup and view all the answers

<p>From atrium to ventricle. (C)</p> Signup and view all the answers

<p>0.8 seconds (A)</p> Signup and view all the answers

<p>Ventricles are contracted, atria are relaxed. (D)</p> Signup and view all the answers

<p>The Sino-atrial node (B)</p> Signup and view all the answers

<p>They transmit impulses from the AVN to the ventricles (A)</p> Signup and view all the answers

<p>It can generate its own contractions independently (B)</p> Signup and view all the answers

<p>It ensures that the atria empty completely before the ventricles contract (C)</p> Signup and view all the answers

<p>Through the Bundles of His to the ventricular walls (C)</p> Signup and view all the answers

<p>Depolarisation of the atria (B)</p> Signup and view all the answers

<p>It allows time for the ventricles to fill with blood (B)</p> Signup and view all the answers

<p>T wave (C)</p> Signup and view all the answers

<p>By measuring the time interval between successive QRS waves (C)</p> Signup and view all the answers

<p>Depolarisation of the ventricles and subsequent contraction (A)</p> Signup and view all the answers

A specialized tissue that carries oxygen, nutrients, and waste products around the body, fights infections, helps regulate temperature, and maintains pH balance.

The liquid component of blood that contains water, proteins, ions, nutrients, waste products, and gases.

Tiny cells responsible for blood clotting, preventing excessive bleeding.

Red blood cells carry oxygen from the lungs to the body's tissues.

White blood cells fight infections and protect the body from disease.

A type of white blood cell that engulfs and destroys pathogens, like bacteria and viruses.

A type of white blood cell that helps to break down bacteria, has a longer lifespan than many other white blood cells.

A type of white blood cell that produces antibodies, which are proteins that target and neutralize specific pathogens.

A type of white blood cell that is the first responder to infection, killing and digesting bacteria and fungi.

A type of red blood cell that carries oxygen throughout the body.

The main artery that carries oxygenated blood from the heart to the rest of the body.

The large vein that carries deoxygenated blood back to the heart from the body.

Blood vessels that carry oxygenated blood away from the heart to the body.

Blood vessels that carry deoxygenated blood back to the heart from the body.

The process of oxygen being added to the blood and carbon dioxide being removed from the blood.

The smallest blood vessels, responsible for gas exchange and nutrient transfer between blood and tissues.

Small vessels connecting capillaries to veins, collecting deoxygenated blood from capillaries.

Two large veins that carry deoxygenated blood back to the heart from the body.

The two chambers of the heart that receive blood from the body and lungs.

The two chambers of the heart that pump blood to the lungs and the rest of the body.

Valves located between the atria and ventricles that prevent blood from flowing back into the atria during ventricular contraction.

The phase of the cardiac cycle when the heart muscle is relaxed, allowing blood to fill the chambers.

The phase of the cardiac cycle when the atria contract, pushing blood into the ventricles.

The phase of the cardiac cycle when the ventricles contract, pumping blood out to the lungs and the rest of the body.

The complete sequence of events in a single heartbeat, involving relaxation and contraction of the heart chambers.

The heart muscle can initiate its own contractions without needing signals from the nervous system.

A wave of electrical activity that causes the heart muscle to contract.

A specialized tissue in the right atrium that initiates the heart beat.

A specialized tissue in the septum of the heart that delays the electrical impulse.

Specialized muscle fibers that conduct the electrical impulse from the AVN to the ventricles.

Pressure in a chamber of the heart is higher above a valve than below the valve, causing the valve to open.

Pressure in a chamber of the heart is lower above a valve than below, causing the valve to close.

The pressure in the ventricle exceeds the pressure in the aorta, causing the aortic valve to open.

Pressure in the ventricle drops below the pressure in the aorta, causing the aortic valve to close.

The pressures in the heart chambers and arteries change throughout the cardiac cycle, influencing the opening and closing of valves.

A recording of the electrical activity of the heart, showcasing the depolarization and repolarization of its different chambers.

The P wave on an ECG represents the atrial depolarization, indicating that the atria are about to contract.

The QRS complex on an ECG represents ventricular depolarization, signifying that the ventricles are contracting.

The T wave on an ECG represents ventricular repolarization, marking the recovery period for the ventricles.

The delay between the P wave and QRS complex is caused by the signal traveling through the AV node, ensuring proper coordination between atrial and ventricular contraction.

The pressure within the left ventricle increases during the cardiac cycle, peaking during ventricular contraction (systole) and falling during ventricular relaxation (diastole).

The aortic valve opens during ventricular ejection, allowing blood to flow from the left ventricle into the aorta. The aortic valve closes at the end of ventricular ejection, preventing backflow of blood into the ventricle during ventricular relaxation.

The opening and closing of the AV valves and semilunar valves create the distinct heart sounds, 'Lubb' and 'Dupp'.

The graph shows the pressure changes in the aorta, left ventricle, and left atrium during one complete heart beat, also known as a cardiac cycle.

The time it takes for one complete heart beat or cardiac cycle can be used to calculate the heart rate. A shorter cycle means a faster heart rate, while a longer cycle means a slower heart rate.