Functions of the Cardiovascular System

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Questions and Answers

What is the function of the cardiovascular system in transporting materials?

  • Only transporting waste products
  • Transporting oxygen, nutrients, hormones, and immune system components (correct)
  • Only regulating pH and ions
  • Only transporting oxygen and nutrients

What is the role of the formed elements in the blood?

  • To transport dissolved substances
  • To transport oxygen, and to involve in blood clotting (correct)
  • To regulate pH and ions
  • To defend against toxins and pathogens, and to stabilize body temperature

What is the function of the myeloid stem cells in the production of blood cells?

  • To produce only RBCs
  • To produce only myeloid cells
  • To produce only lymphoid cells
  • To produce both myeloid and lymphoid cells (correct)

What is the characteristic of the blood in terms of its viscosity and pH?

<p>High viscosity and slightly alkaline pH (A)</p> Signup and view all the answers

What is the approximate percentage of blood volume in the body weight of an adult?

<p>7-8% of body weight (C)</p> Signup and view all the answers

What is the main function of the integumentary system in terms of protection?

<p>Cushioning and insulation of deeper organs (D)</p> Signup and view all the answers

What is the process of separating whole blood into its components for analysis?

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

What is the role of Merkel cells in the epidermis?

<p>Connection to sensory nerve endings (D)</p> Signup and view all the answers

What is the term for the clear layer of the epidermis?

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

What is the function of the stratum granulosum layer of the epidermis?

<p>Protection against abrasion and penetration (C)</p> Signup and view all the answers

What is the main source of skin colour in individuals with low levels of melanocytes?

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

What is the precursor molecule used by melanocytes to produce melanin?

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

What type of plexus is responsible for the capillary network from small arteries in the papillary layer?

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

What is the term for the damage to blood vessels that causes black and blue lesions?

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

Which of the following is related to the dermal circulation?

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

What is the term for the network of blood vessels along the reticular layer?

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

What is the function of the nerve fibers in the dermal circulation?

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

What is the term for the return of blood from the capillary plexus deep to the papillary plexus?

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

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