Human Blood and Internal Environment

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Questions and Answers

What is the function of the lymphatic system in relation to the blood?

  • Deliver enzymes from the blood to the interstitial fluid
  • Transport oxygen from the lungs to the digestive tract
  • Return waste materials from the interstitial fluid to the blood after cleansing (correct)
  • Carry nutrients from the endocrine glands to the blood

What is the internal environment of the human organism composed of?

  • Nutrients inside blood vessels, enzymes around body cells, and salts inside lymph vessels
  • Blood inside blood vessels, interstitial fluid around body cells, and lymph inside lymph vessels (correct)
  • Oxygen inside blood vessels, carbon dioxide around body cells, and hormones inside lymph vessels
  • Antigens inside blood vessels, antibodies around body cells, and leukocytes inside lymph vessels

What does the blood pick up from the lungs?

  • Carbon dioxide
  • Hormones
  • Oxygen (correct)
  • Enzymes

What is the physical characteristic of blood in terms of viscosity?

<p>About 5 times thicker than water (D)</p> Signup and view all the answers

What is the function of red blood cells?

<p>Transporting oxygen and carbon dioxide (D)</p> Signup and view all the answers

Where does haematopoiesis occur in the adult?

<p>Proximal epiphyses of the humerus, femur, sternum, and pelvis (B)</p> Signup and view all the answers

What is the composition of blood?

<p>45% plasma and 55% formed elements (D)</p> Signup and view all the answers

What is the process by which blood cells are formed called?

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

Which component of blood is involved in protecting against toxins and foreign microbes?

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

Where are red blood cells produced?

<p>Red bone marrow (myeloid tissue) (D)</p> Signup and view all the answers

What is the normal range of haemoglobin in adult males?

<p>$12-15$gm/dl (B)</p> Signup and view all the answers

Which part of the body regulates pH through buffers?

<p>$ ext{Plasma}$ (A)</p> Signup and view all the answers

What do red blood cells carry within them?

<p>A small amount of carbon dioxide in combination with haemoglobin (B)</p> Signup and view all the answers

What is the primary function of white blood cells?

<p>Protecting against toxins and foreign microbes (D)</p> Signup and view all the answers

Where does haematopoiesis occur in children?

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

What are the normal values of haemoglobin in infants?

<p>$14-20$gm/dl (D)</p> Signup and view all the answers

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