Skeletal System Functions and Structure
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Questions and Answers

Which of the following are functions of the skeletal system? (Select all that apply)

  • Photosynthesis
  • Mineral Homeostasis (correct)
  • Blood Cell Production (correct)
  • Support (correct)

What is the total number of bones in the human body?

206

The epiphyseal plate helps with ________.

growth

Match the part of the bone with its function:

<p>Epiphysis = Protects spongy bone Diaphysis = Protects compact bone Medullary Cavity = Stores yellow marrow Red Marrow = Blood cell formation</p> Signup and view all the answers

Osteoclases are responsible for the process of ossification.

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

What is the process of creating bones called?

<p>ossification</p> Signup and view all the answers

What are the two types of bone marrow mentioned?

<p>yellow marrow and red marrow</p> Signup and view all the answers

Which of the following bone types can be found in the axial skeleton? (Select all that apply)

<p>Vertebrae (A), Ribs (D)</p> Signup and view all the answers

Flashcards

Skeletal System Function: Support

The skeletal system provides a framework for the body, holding it upright and supporting soft tissues.

Skeletal System Function: Protection

Bones protect vital organs like the brain (skull), heart (ribcage), and spinal cord (vertebral column).

Spongy Bone Location

Spongy bone is found at the ends of long bones.

Compact Bone Location

Compact bone is the dense material in the shaft of long bones.

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Diaphysis

The shaft of a long bone.

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Osteoblast

Bone-building cells.

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Osteoclast

Bone-resorbing cells.

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Epiphysis

End of long bones; often filled with spongy bone.

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Ossification

The process of making bone from cartilage or other material.

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Number of Bones

The human body typically has 206 bones.

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Study Notes

Skeletal System Functions

  • Support
  • Protection
  • Assist in Movement
  • Mineral Homeostasis
  • Blood Cell Production

Bone Types

  • Axial: Located along the midline of the body

    • Relative distance from midline: Middle
    • Shapes: Long, flat, irregular
    • Examples: Ribs
  • Appendicular: Located in the appendages

    • Relative distance from midline: Middle/sides
    • Shapes: Long/short, flat/irregular
    • Examples: Femur

Bone Structure

  • Long Bone:
    • Epiphysis: Ends of the bone, protect spongy bone
    • Diaphysis: Shaft, protects compact bone
    • Articular Cartilage: Prevents friction
    • Periosteum: Covers bones, protects and strengthens diaphysis
    • Spongy Bone: Ends/Center of bone, made of red/yellow bone marrow
    • Compact Bone: Ends/center of bone, made of red/yellow bone marrow
    • Yellow Marrow: Stores fat (energy), site of hemopoiesis
    • Red Marrow: Site of hemopoiesis

Bone Cells

  • Osteogenic: Bone-maker
  • Osteoblast: Bone-maker, creates bone tissue
  • Osteocytes: Maintains bone tissue
  • Osteoclast: Bone-breaker, resorption
  • Ossification: Process of bone formation
  • Resorption: Process of breaking down bone.

Bone Markings

  • Haversian/central canal
  • Lacunae
  • Lamellae
  • Canaliculi

Bone Girdles:

  • Pectoral Girdles: Two scapula bones (2)
  • Pelvic Girdles: Two large coxal bones (1)
  • Assist with supporting the body

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Description

Explore the critical functions and structures of the skeletal system in this quiz. Learn about bone types, the details of long bone anatomy, and the roles of various bone cells in maintaining health and homeostasis. Perfect for biology students.

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