Circulation Questions and Answers

All deoxygenated blood returning from the systemic circulation flows into the: A. Left atrium B. right atrium C. Left ventricle D. Right ventricle

Atrioventricular valves are open when: A. Atria are contracting B. Ventricles are contracting C. Ventricles are in systole D. Atria are in diastole

Which blood vessels is the only one to permit simple diffusion between the blood and the interstitial fluid? A. Arterioles B. Capillaries C. Arteries D. Veins

Which statement best describes arteries? A. All carry blood away from the heart B. All carry oxygenated blood to the heart C. All contain valves to prevent the back flow of blood D. Only large arteries are lined with endothelium

Which of the following veins contains oxygenated blood? A. Aortic vein B. Pulmonary veins C. Superior vena cava D. Pulmonary arteries

The velocity of blood flow is slowest in the: A. Capillaries, because the cross sectional diameter of the capillaries is the smallest B. Veins, because the cross sectional diameter of the veins is the smallest C. Capillaries, because the cross sectional diameter of the capillaries is the greatest D. Veins, because the cross sectional diameter of the veins is the greatest E. Veins, because the diameter of the veins is greater than that of the arteries and capillaries

Select the correct statement about cardiac output: A. Stroke volume increases if end diastolic volume decreases B. Decreased venous return will result in increased end diastolic volume C. A slow heart rate increases end diastolic volume, stroke volume and the force of contraction D. Cardiac output decreases when stroke volume increases

The Frank-Starling Law of the Heart states that: A. The less the heart is filled and stretched during diastole, the greater the force of contraction during systole B. The more the heart is filled and stretched during diastole, the greater the force of contraction during systole C. The more the heart is filled and stretched during systole, the greater the force of contraction during diastole D. The less the heart is filled and stretched during systole, the greater the force of contraction during diastole

When oxygen is low in the brain, MAP will decrease causing cerebral vessels to to ensure adequate perfusion to the tissues. A. Dilate B. Constrict C. Spasm D. Stricture

Which of the following virus cause AIDS? HIV Rhino Dhori Dengue

ww What cardiovascular adaptations are associated with physical fitness?

How do the above adaptations affect aerobic capacity and muscle performance?

A person's maximum heart rate decreases with age, and is often estimated as: Max heart Given this, what happens to a persons aerobic capacity as they age? rate=220-age.

ALL is a cancer that affects the red blood cells white blood cells platelets clotting factors

Which of the following are lymphocytes? T cells and B cells Neutrophil and Eosinophil Basophil and Mast cell Mast cell and Neutrophil

Which of the following mechanism is referred to as the self-adjusting mechanism? Homeostasis Stimulus Response Reflex

What kind of wound occurs when the skin scrapes against a hard surface and tiny blood vessels break in the outer layer of the skin? A abrasion B. avulsion C laceration D. puncture

Which of the following is carried by the arteries from the heart to all parts of the body? Oxygenated blood Deoxygenated blood Impute blood Carbonated blood

The veins carry blood from ________ to the heart. the capillaries the arteries the veins the plasma

Visceral pain is often experienced somewhere other than its origin: this is known as A. Neuropathy B. Colic C. Referred pain D. Rebound tenderness

Which of the following lead(s) to atherosclerosis? A. Poor diet B. Lack of exercise C. Lifestyle D. All of the choices

The red color of the blood is due to the presence of Hemoglobin Plasma Platelets White blood cells

is to systole as is to aorta. A. Contraction, artery, respectively B. Relaxation, vein, respectively C. Pulse, capillary, respectively D. Heart rate, venule, respectively

Which part of the heart receives oxygenated blood?" A. Right Ventricle B. Right atrium C. Left ventricle D. Left atrium

Which of the following chambers pumps the blood to the lungs? A. Right atrium B. Left atrium C. Right ventricle D. Left ventricle

Lymphatic capillaries A. are open-ended like drinking straws. B. have continuous tight junctions like those of the capillaries of the blood-brain barrier. C. have endothelial cells that are separated by flaplike minivalves that open wide. D. have special barriers that prevent cancer cells from entering. E. all of the above.

Shane is concerned that he is not a good blood donor because his blood is AB+. You assure Shane that many people can benefit from his donation, as he wants his blood donation to help others. What blood type recipient is compatible with Shane's donation?

Which factor does NOT influence stroke volume? The amount of blood that is filling up the ventricle High blood pressure The amount of stretch or tension in the ventricle just before it contracts The oxygen levels in the blood

What change would we expect to see in an ECG when taken after exercise compared to one taken at rest? R-R intervals closer together R-R intervals further apart decreased height of T waves

What prevents activated platelets from sticking to intact blood vessels near, but not at, the site of injury? Release of thromboxane A2 by the endothelial cells. Release of histamine at the site of injury which sequesters platelets at the injured location. Inhibition of the release of prostacyclin from sub-endothelial cells. Lack of exposed collagen to which von Willebrand factor has bound.

A patient has a heart rate of 70 beats per minute, an EDV of 110 ml, and an ESV of 70 ml. What is the patient's cardiac output? 4.9 L/minute 2.8 L/minute 11.1 U/minute 18.0 L/minute

For clients with heart conditions, which of the following is the best way to keep them safe? a. Keep their homes warmer than is normally preferred by others b. Put lotion on their dry skin c. Promote standing still for a moment or two after rising from a bed or chair d. Encourage strenuous exercise

Which statement is true regarding the heart? The papillary muscles are attached to the chordae tendineae The right atrium receives blood from the pulmonary circuit The right AV valve is also referred to as the mitral valve The pericardium is the inner layer of the heart that lines the heart chambers

During the isovolumetric contraction period of the cardiac cycle, Select one: a. AV and semilunar valves are closed. b. the atria are contracted. c. ventricular volume increases. d. blood is pumped into the large arteries. e. pressure in the ventricles decreases.

What type of immunity exists even in the absence of a stimulus? cell-mediated immunity specific immunity innate immunity adaptive immunity

What vessels pick up excess extracellular fluid in the interstitial space and return it to circulation? jugular veins lymphatic vessels pulmonary veins coronary arteries

What is the oxygen-binding protein found in erythrocytes? beta globulin hemoglobin albumin gamma globulin

Which type of leukocyte may produce antibodies? neutrophil lymphocyte eosinophil monocyte

When blood is centrifuged, what is found in the buffy coat? leukocytes and erythrocytes erythrocytes and platelets plasma and leukocytes platelets and leukocytes

During a tapeworm infection, you would expect to see increased numbers of: eosinophils basophils neutrophils lymphocytes

B cells develop and mature in the: thymus liver lymph nodes bone marrow

Which of the following is NOT a function of antibodies? Phagocytosis opsonization neutralization agglutination

What ions are necessary for both the intrinsic and extrinsic pathways to the coagulation cascade? potassium ions magnesium ions calcium ions iron ions

Which of the following is a non-phagocytic cell? basophil eosinophil neutrophil macrophage

Which of the following is NOT a basic function of the lymphatic system? absorption of dietary fats regulation of calcium ion concentration in the blood regulation of interstitial fluid volume immune functions

Why is blood considered a connective tissue? It is found in all areas of the body. It acts as an adhesive layer between tissue types. It develops from mesenchyme. It allows for chemical signals from one area of the body to reach another.

Which of the choices below is the parent cell for all formed elements of blood? megakaryocyte polymorphonuclear cell hematopoietic stem cell normoblast

1. The structure that prevents backflow of blood into the left atrium is the 2. The vessel that carries oxygen-rich blood to tissues is the 3. The capillaries receiving blood flow from the left side of the heart are the 4. The structure that is located anatomically between the aorta and the left ventricle is the

What are three purposes of the pleural membranes?

Which vessels control and regulate the amount of blood flow to the capillaries? Elastic arteries Veins Arterioles Venules