PSL301H—Blood and Immune System Lecture 1: Intro and Red blood cells

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Questions and Answers

What are the symptoms described in the case study?

  • Fatigue, irritability, and lightheadedness (correct)
  • Fever, cough, and sore throat
  • Nausea, vomiting, and diarrhea
  • Joint pain, muscle weakness, and skin rash

What condition was Erica Fine diagnosed with ten years ago?

  • Diabetes
  • Asthma
  • Hypertension
  • Ulcerative colitis (correct)

What dietary change did Erica Fine make over the past few months?

  • Avoided all fruits and vegetables
  • Omitted animal products from her diet (correct)
  • Started consuming large amounts of red meat
  • Increased intake of sugary snacks

What is the possible cause of Erica Fine's symptoms based on her dietary change?

<p>Iron deficiency anemia (D)</p> Signup and view all the answers

What is the role of blood in defending against toxins and pathogens?

<p>Defending against toxins and pathogens (C)</p> Signup and view all the answers

What is the approximate amount of blood in a 70 kg male?

<p>5 liters (C)</p> Signup and view all the answers

What is the normal range for hematocrit in the blood?

<p>35-54% (B)</p> Signup and view all the answers

Which organ is primarily responsible for producing most plasma proteins?

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

What is the primary function of albumins in the blood?

<p>Generating colloid osmotic pressure (D)</p> Signup and view all the answers

What percentage of the total blood volume is occupied by packed red blood cells in a healthy individual?

<p>35-54% (D)</p> Signup and view all the answers

Which type of leukocytes are primarily responsible for phagocytosis in the body?

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

What is the primary role of fibrinogen in the blood?

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

Which of the following symptoms might indicate a possible infection in an individual?

<p>Enlarged tonsils and headache (D)</p> Signup and view all the answers

What is the cause of high blood viscosity in an individual with a high hematocrit level?

<p>Low oxygen delivery to tissues (A)</p> Signup and view all the answers

What might be the condition of an individual experiencing confusion, stiff neck, and a temperature of 39.2C?

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

What is the primary way in which the body fights infections?

<p>Activating the immune system (A)</p> Signup and view all the answers

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