Blood Vessels and Circulatory System Quiz
19 Questions
1 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

Which layer of a blood vessel contains muscles responsible for vasoconstriction and vasodilation?

  • Tunica intima
  • Basal lamina
  • Tunica media (correct)
  • Tunica externa

    • What is the primary function of the vasa vasorum in blood vessels?

  • To regulate blood flow within capillaries
  • To prevent backflow in veins
  • To supply nutrients to the large blood vessels (correct)
  • To control contraction and dilation

    • What is the role of the external elastic membrane in blood vessels?

  • Prevents backflow in veins
  • Separates tunica externa from tunica media (correct)
  • Controls vasoconstriction and vasodilation
  • Provides nutrients to the vessel walls

    • Which type of blood vessels have thicker walls due to higher pressure from pumped blood?

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

    Where are the nervi vasorum located in blood vessels?

    <p>In tunica media</p> Signup and view all the answers

    Which blood vessels have valves to prevent backflow due to low pressure?

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

    What factor is the greatest and quickest variable to change blood pressure?

    <p>Vessel diameter</p> Signup and view all the answers

    Where does most noticeable slowdown of blood flow occur?

    <p>Artery to arteriole junction</p> Signup and view all the answers

    Which system must have greater pressure than the atria during diastole?

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

    What is the function of Antidiuretic Hormone (ADH) in response to blood volume drops?

    <p>Signal the kidneys to reabsorb water</p> Signup and view all the answers

    What hormone, when released by the kidneys, stimulates hematopoiesis?

    <p>Erythropoietin (EPO)</p> Signup and view all the answers

    What is the role of hydrostatic pressure in the blood vessels?

    <p>Drives blood out of capillaries and into tissues</p> Signup and view all the answers

    What is the function of tunica externa in the circulatory system?

    <p>To hold blood vessels in place</p> Signup and view all the answers

    Which type of capillary is the most common in the human body?

    <p>Continuous capillary</p> Signup and view all the answers

    What is the primary function of venules in the circulatory system?

    <p>Forming into veins</p> Signup and view all the answers

    What is the relationship between mean arterial pressure and ischemia?

    <p>Mean arterial pressure below 60 mm Hg can result in ischemia</p> Signup and view all the answers

    Which component of blood pressure represents ventricular contraction?

    <p>Systolic BP</p> Signup and view all the answers

    Why do veins have valves or shunts in their structure?

    <p>To prevent backflow of blood</p> Signup and view all the answers

    What is the function of precapillary sphincters in the circulatory system?

    <p>Manage blood flow into capillaries</p> Signup and view all the answers

    More Like This

    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser