Closed Circulatory System Characteristics
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Questions and Answers

What is the main function of the atria in a mammal's heart?

  • Exchange nutrients with tissues
  • Collect blood that enters the heart (correct)
  • Prevent backflow of blood
  • Pump blood out of the heart

Which blood vessels have more elastic walls and thicker walls?

  • Arteries (correct)
  • Capillaries
  • Veins
  • Venules

In the cardiovascular system, which blood pathway involves the heart and lungs?

  • Systemic circuit
  • Pulmonary circuit (correct)
  • Arteries circuit
  • Veins circuit

What is the main function of valves in the heart?

<p>Prevent backflow of blood (A)</p> Signup and view all the answers

Which type of muscle tissue makes up the heart?

<p>Cardiac muscle tissue (A)</p> Signup and view all the answers

What is the main characteristic of veins compared to arteries?

<p>They have valves to prevent backflow (A)</p> Signup and view all the answers

Which type of muscle tissue lacks sarcomeres?

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

What function do intercalated discs serve in cardiac muscle tissue?

<p>Cardiac cell-to-cell communication (A)</p> Signup and view all the answers

Which type of blood cells is responsible for transporting oxygen and carbon dioxide?

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

What is the basic contractile unit of a muscle fiber?

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

Which component is NOT found in bone tissue?

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

What distinguishes mammalian blood from non-mammalian blood?

<p>An obvious characteristic seen in lab (A)</p> Signup and view all the answers

Where is Simple Squamous epithelium mainly located?

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

What is the primary function of Simple Columnar epithelium?

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

Which connective tissue is mainly responsible for supporting and binding tissues?

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

How does adipose tissue primarily function?

<p>Storage, insulation, and cushioning (A)</p> Signup and view all the answers

In which location would you find Simple Cuboidal epithelium?

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

What is the main function of Cartilage in the body?

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

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