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Questions and Answers

Which gland is responsible for circadian rhythm and initiating sleepiness?

  • Pancreas
  • Thymus
  • Pineal gland (correct)
  • Thyroid

Which gland contains islets of Langerhans and is responsible for regulating blood sugar levels?

  • Thyroid
  • Pancreas (correct)
  • Pineal gland
  • Thymus

Which gland is responsible for metabolism regulation?

  • Thyroid (correct)
  • Thymus
  • Pancreas
  • Pineal gland

Which gland is the primary organ of the lymphatic system?

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

Which gland is located within the cranial cavity within the brain?

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

Which gland is located within the neck and has a butterfly shape?

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

Which cells are responsible for antibody mediated immunity?

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

Where do B cells originate and mature?

<p>Red bone marrow (B)</p> Signup and view all the answers

Where do T cells mature?

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

Which cells directly attack infected cells?

<p>Killer T cells (A)</p> Signup and view all the answers

What is the process called when lymph nodes physically stop particles from progressing further in the body?

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

What is the difference between active and passive immunity?

<p>Active immunity occurs when one's own system responds to harmful agents, passive immunity is transferred (A)</p> Signup and view all the answers

Which type of leukocyte is the largest?

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

What is the main function of the thymus?

<p>Secretion of hormones for T cell development (B)</p> Signup and view all the answers

What is the process through which phagocytosis occurs?

<p>All of the above (D)</p> Signup and view all the answers

What is the function of albumin in the plasma?

<p>Maintenance of osmotic pressure (A)</p> Signup and view all the answers

What is the role of thrombocytes in the blood?

<p>Assisting in blood clotting (A)</p> Signup and view all the answers

What is the function of prothrombin in the blood clotting process?

<p>Conversion of fibrinogen into fibrin (A)</p> Signup and view all the answers

Which of the following is NOT a role of platelets in hemostasis?

<p>Initiate the formation of megakaryocytes (D)</p> Signup and view all the answers

During which phase of the cardiac cycle do the SL valves open and blood is ejected from the heart?

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

What is the purpose of the isovolumetric ventricular relaxation phase in the cardiac cycle?

<p>To prevent backflow of blood into the ventricles (C)</p> Signup and view all the answers

Which structure is responsible for relaying information about blood pressure within the autonomic nervous system?

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

Which layer of the heart wall is the outermost layer?

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

What is the formula for cardiac output?

<p>Cardiac output = stroke volume x heart rate (C)</p> Signup and view all the answers

Which of the following statements about stroke volume is correct?

<p>The stronger the ventricular contraction, the greater the stroke volume. (C)</p> Signup and view all the answers

Which of the following waves in an ECG represents ventricular contraction?

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

What is the purpose of the hepatic portal vein?

<p>To filter the blood from the digestive system before distributing it to the rest of the body. (B)</p> Signup and view all the answers

What factors affect peripheral resistance to blood flow?

<p>All of the above. (D)</p> Signup and view all the answers

How does lymph flow through the lymphatic vessels?

<p>Lymph flows through the lymphatic vessels due to the high number of valves that permit fluid in only one direction. (C)</p> Signup and view all the answers

What are the primary cells involved in the adaptive immune system?

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

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