Blood as a Connective Tissue
56 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the extracellular matrix of blood called?

  • Cytoplasm
  • Plasma (correct)
  • Nucleus
  • Lysosome

    • Which of the following is a cellular element in blood that is NOT a formed element?

  • White blood cells
  • Platelets
  • Red blood cells
  • Endocrine cells (correct)

    • What is the primary function of blood?

  • Synthesis of hormones
  • Absorption of oxygen
  • Delivery of oxygen and nutrients to body cells (correct)
  • Storage of nutrients

    • How do nutrients from the foods you eat reach body cells?

    <p>Absorbed in the digestive tract and transported in the bloodstream</p> Signup and view all the answers

    Which system is responsible for transporting oxygen from the air you breathe into the blood?

    <p>Respiratory system</p> Signup and view all the answers

    What is the function of endocrine glands in relation to blood?

    <p>Release hormones into the bloodstream for transport to target cells</p> Signup and view all the answers

    What is the main function of blood platelets during vessel damage?

    <p>Block ruptured areas of blood vessels</p> Signup and view all the answers

    What is the role of white blood cells in protecting the body?

    <p>Seek out and destroy internal threats</p> Signup and view all the answers

    What is true about the hematocrit test?

    <p>Separates RBCs from the liquid plasma using a centrifuge</p> Signup and view all the answers

    What contributes to maintaining the pH of body tissues?

    <p>Buffers present in blood</p> Signup and view all the answers

    How does blood help regulate body temperature on a warm day?

    <p>By increasing transport of blood from core to skin for heat dissipation</p> Signup and view all the answers

    What is the primary characteristic that determines the color of blood?

    <p>Presence of oxygen</p> Signup and view all the answers

    Which component of blood helps in maintaining the water content of body cells?

    <p>Blood plasma</p> Signup and view all the answers

    What is the role of proteins present in blood?

    <p>Act as buffers for regulating pH in body tissues</p> Signup and view all the answers

    How do homeostatic mechanisms regulate body temperature during exercise on a warm day?

    <p>By increasing transport of blood from skin to core for cooling</p> Signup and view all the answers

    What happens to the color of blood that has just taken up oxygen?

    <p>It turns bright red</p> Signup and view all the answers

    Why does blood have a slightly higher temperature than normal body temperature?

    <p>Due to the friction and resistance experienced as blood flows through blood vessels.</p> Signup and view all the answers

    What is the role of albumin in the blood plasma?

    <p>Transport vehicle for fatty acids and steroid hormones.</p> Signup and view all the answers

    Why does honey demonstrate greater resistance to flow compared to water?

    <p>Honey has a higher viscosity than water.</p> Signup and view all the answers

    Which component of blood contributes significantly to maintaining both blood volume and pressure?

    <p>Albumin</p> Signup and view all the answers

    What is the average pH range of blood in a healthy person?

    <p>7.35 - 7.45</p> Signup and view all the answers

    Which plasma protein group is primarily involved in transporting iron, lipids, and fat-soluble vitamins?

    <p>Globulins</p> Signup and view all the answers

    What effect does the presence of plasma proteins have on the viscosity of blood?

    <p>Increases viscosity</p> Signup and view all the answers

    Among the plasma proteins, which is produced by specialized leukocytes known as plasma cells?

    <p>Immunoglobulins</p> Signup and view all the answers

    How much of the total plasma protein volume do globulins make up?

    <p>38%</p> Signup and view all the answers

    What is the primary function of fibrinogen in the blood plasma?

    <p>Responsible for blood clotting.</p> Signup and view all the answers

    Which chamber of the heart pumps blood through the aortic valve into the ascending aorta?

    <p>Left Ventricle</p> Signup and view all the answers

    What is the function of the ligamentum arteriosum in the heart?

    <p>Connects the aorta to the pulmonary trunk</p> Signup and view all the answers

    Through which valve does blood pass when moving from the left atrium into the left ventricle?

    <p>Bicuspid or Mitral Valve</p> Signup and view all the answers

    Which structure connects the pulmonary trunk and the aorta in the heart?

    <p>Ligamentum Arteriosum</p> Signup and view all the answers

    What is the function of the chordae tendineae in the heart?

    <p>Prevent backflow of blood into atria</p> Signup and view all the answers

    Which valve does blood pass through when entering the pulmonary trunk from the right ventricle?

    <p>Pulmonary Valve</p> Signup and view all the answers

    Why is the left ventricle wall thicker than the right ventricle wall?

    <p>To pump blood to all parts of the body in systemic circulation</p> Signup and view all the answers

    How do heart valves ensure one-way flow of blood?

    <p>By opening and closing in response to pressure differences</p> Signup and view all the answers

    Why are atrial walls thinner than ventricular walls?

    <p>To assist gravity in delivering blood to the ventricles</p> Signup and view all the answers

    What is the function of semi-lunar valves in the heart?

    <p>To prevent backflow of blood from arteries to ventricles</p> Signup and view all the answers

    What contributes to the variations in thickness among different heart chambers?

    <p>The distance blood needs to be pumped</p> Signup and view all the answers

    How does blood flow within the heart chambers based on pressure differences?

    <p>From areas of high to low pressure</p> Signup and view all the answers

    During the cardiac cycle, what causes the Lubb sound (S1) heard in the heartbeat?

    <p>Closure of both atrioventricular valves as ventricles contract</p> Signup and view all the answers

    Which component contributes to cardiac output by representing the volume of blood ejected by the ventricle during each contraction?

    <p>Stroke volume</p> Signup and view all the answers

    What is the primary cause of the Dupp sound (S2) in the cardiac cycle?

    <p>Closure of both AV valves as ventricles relax</p> Signup and view all the answers

    In the context of cardiac output, what does CO stand for?

    <p>Cardiac output</p> Signup and view all the answers

    During which phase of the cardiac cycle does blood turbulence due to valve closure cause heart sounds?

    <p>Ventricular systole</p> Signup and view all the answers

    What modification can change Cardiac Output (CO) according to the provided text?

    <p>Variations in stroke volume or heart rate</p> Signup and view all the answers

    What happens when the atrioventricular valves are closed?

    <p>Edges of cusps meet and close the valve</p> Signup and view all the answers

    Which action tightens the chordae tendineae to prevent backflow of blood in the atrioventricular valves?

    <p>Papillary muscles contraction</p> Signup and view all the answers

    What causes the semilunar valves to close and prevent backflow of blood from arteries?

    <p>Pressure in ventricles exceeding pressure in arteries</p> Signup and view all the answers

    What is the main function of the semilunar valves in the heart?

    <p>Prevent backflow of blood from arteries into ventricles</p> Signup and view all the answers

    What drives the cusps of atrioventricular valves upward until they close during ventricle contraction?

    <p>Pressure difference between atria and ventricles</p> Signup and view all the answers

    Why do semilunar valves open in the heart?

    <p>When pulmonary pressure exceeds aortic pressure</p> Signup and view all the answers

    What is the term for the pressure that must be exceeded before the semilunar valves open and ventricular ejection begins?

    <p>Afterload</p> Signup and view all the answers

    Which factor ensures that if more blood is returned to the heart, more blood is ejected in the next heart beat?

    <p>Frank-Starling law</p> Signup and view all the answers

    What is the origin of nervous system regulation of heart rate?

    <p>Medulla oblongata</p> Signup and view all the answers

    Which of the following is NOT involved in chemical regulation of heart rate?

    <p>Proprioceptors</p> Signup and view all the answers

    Which of the following factors influences the forcefulness of contraction of the heart muscle?

    <p>Pressure that must be exceeded before SL valves open</p> Signup and view all the answers

    What factors are involved in ensuring that right and left ventricles pump equal volumes of blood?

    <p>Preload, contractility, afterload</p> Signup and view all the answers

    More Like This

    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser