Human Skeletal System Overview
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Questions and Answers

What is the primary function of the skeletal system as described in the text?

  • Producing and regulating hormones
  • Maintaining balance in the body
  • Supporting and anchoring soft organs (correct)
  • Facilitating nerve transmission

Which bones are included in the axial skeleton?

  • Hyoid bone and auditory ossicles
  • Skull bones, ribs, and sternum (correct)
  • Bones forming the girdles
  • Bones of the upper and lower limbs

What is the main difference between compact and spongy bone tissue?

  • Density (correct)
  • Blood supply
  • Cellular composition
  • Function

Which component of the skeletal system is responsible for blood cell formation?

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

What is the function of osteocytes in bone tissue?

<p>Maintaining bone tissue (B)</p> Signup and view all the answers

Which type of bone cell is responsible for bone resorption?

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

What is the structure known as a sponge-like meshwork consisting of trabeculae in bone tissue?

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

Which type of bone features elongated cylinders oriented parallel to the long axis with spongy bone meshwork?

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

What fills the spaces within the meshwork of trabecular bone?

<p>Marrow and blood vessels (C)</p> Signup and view all the answers

Which component is NOT a characteristic feature of spongy (cancellous) bone?

<p>Presence of Haversian canals (A)</p> Signup and view all the answers

In which type of bone tissue are the spaces within the meshwork continuous and occupied by marrow and blood vessels?

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

Which type of bone tissue is responsible for reducing the weight of the bone?

<p>Spongy bone tissue (D)</p> Signup and view all the answers

Where is the location of spongy bone in bones primarily?

<p>At the ends of long bones (epiphysis) (B)</p> Signup and view all the answers

What is the primary function of compact bone tissue in bones?

<p>To provide strength and support (B)</p> Signup and view all the answers

Which part of a long bone contains densely packed osteons?

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

Where is the blood supply more concentrated in bones with spongy tissue?

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

What is the primary reason why spongy (cancellous) bone does not contain osteons?

<p>Osteons are not needed due to its high surface area for metabolic exchange (B)</p> Signup and view all the answers

The expanded ends of long bones are also known as:

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

Why does spongy (cancellous) bone appear more porous compared to compact bone?

<p>The pores facilitate the diffusion of nutrients and waste products (D)</p> Signup and view all the answers

Which part of a long bone is referred to as the shaft?

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

How does the absence of osteons in spongy bone affect its mechanical properties compared to compact bone?

<p>Spongy bone is more flexible and elastic than compact bone (A)</p> Signup and view all the answers

Which cell type is responsible for the deposition of new bone in spongy (cancellous) bone tissue?

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

What term is used for the junction between the diaphysis and epiphysis in a growing bone?

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

Which term describes the bone tissue that forms the hard outer shell of bones?

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

In what way does the structural arrangement of spongy bone contribute to its role in metabolic functions?

<p>Increases contact surface for vascularization and nutrient exchange (A)</p> Signup and view all the answers

In long bones, where is the primary site for red blood cell production?

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

What is a defining characteristic of diaphysis in long bones?

<p>It is longer in one dimension (D)</p> Signup and view all the answers

How does the length of diaphysis in long bones compare to other bones?

<p>It is the longest part compared to other bones (A)</p> Signup and view all the answers

Which of the following terms best describes the shape of the diaphysis in long bones?

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

What is a common characteristic of the shaft of diaphysis in long bones?

<p>It is elongated (C)</p> Signup and view all the answers

In what dimension are diaphysis long bones longer?

<p>Length-wise (A)</p> Signup and view all the answers

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