The Musculoskeletal System

From the study guide

Course Outline

  1. Skeleton Functions
  2. Bone Types and Features
  3. Joint Types and Movement

1. Skeleton Functions

Essential Points

  • The skeleton supports and protects the body, produces blood cells, stores essential minerals such as calcium, and provides shape and movement.

2. Bone Types and Features

Key Concepts & Definitions

  • Long bones: Long bones are longer than they are wide and have a thick outer layer for protection; examples include the femur, humerus, tibia, and fibula.
  • Short bones: Small, cube-shaped bones that are nearly equal in length and width and provide support while allowing intricate movement; examples occur in the wrists, ankles, and hands.
  • Flat bones: Broad, thin bones made of two thin layers of bone that protect vital organs, including the heart, lungs, and brain.
  • Sesamoid bones: Bones that relieve tension in muscles and tendons, allow increased weight-bearing, and protect muscles from strain; examples occur in the toes and feet.
  • Irregular bones: Bones with complex, varied shapes that do not fit other bone categories; their shapes provide structural support and protection for vital organs, and the spine is an example.

3. Joint Types and Movement

Key Concepts & Definitions

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Practice quiz preview

1. Which set of functions does the skeleton perform?

2. A patient has reduced bone-marrow blood-cell production and low calcium reserves, while the bones still provide body support. Which skeletal functions are impaired?

3. An arm bone is substantially longer than it is wide and has a thick outer layer that helps protect it. Which category best fits this bone?

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Flashcard preview

What does the skeleton produce?

Blood cells.

What essential mineral does the skeleton store?

Calcium.

How does the skeleton contribute to body movement?

It enables movement.

How are long bones proportioned compared with their width?

They are longer than they are wide.

What protective feature do long bones have?

A thick outer layer.

What tissue holds bones together in fibrous joints?

Dense collagenous connective tissue.

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Frequently asked questions

What does the The Musculoskeletal System study guide cover?

It covers the core concepts of The Musculoskeletal System, organized by topic with the key definitions, explanations and takeaways, so it's easier to learn and remember.

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How many questions are in the The Musculoskeletal System quiz?

The practice quiz has 7 multiple-choice questions, each with an explanation. Use it to check what you know and find your gaps.

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How do I study The Musculoskeletal System with flashcards?

There are 17 flashcards on The Musculoskeletal System, with a question on the front and the answer on the back. Try to recall each answer before you flip, and let spaced repetition bring back the ones you miss.

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