MPharm Programme: Musculoskeletal System - Joints

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Questions and Answers

What is the function of joints in the skeletal system?

  • Provide strength and flexibility (correct)
  • Facilitate nerve signal transmission
  • Produce red blood cells
  • Maintain body temperature

Which type of joint in the skeletal system is characterized by fibrous tissue joining the bones without a joint cavity?

  • Synovial joints
  • Fibrous joints (correct)
  • Symphyses
  • Cartilaginous joints

What is the main function of synovial fluid in synovial joints?

  • Stimulate bone growth
  • Prevent muscle fatigue
  • Act as a lubricant for joint movement (correct)
  • Provide oxygen to the joint tissues

Which type of joint has hyaline cartilage uniting the bones and is immovable?

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

What is the role of reinforcing ligaments in joints?

<p>Prevent dislocation of bones (C)</p> Signup and view all the answers

Which part of a synovial joint allows for 'give' or flex during movement?

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

Which type of joint has fibrocartilage uniting the bones and provides resilience as a shock absorber?

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

What is the primary characteristic that distinguishes synovial joints from fibrous and cartilaginous joints?

<p>Movement capability due to synovial fluid in the joint cavity (C)</p> Signup and view all the answers

What type of joint allows for only movement in one plane, specifically flexion and extension?

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

Which type of joint allows rotation of a bone around its long axis?

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

In which type of joint does the oval articular surface of one bone fit into a concavity of another bone?

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

Which type of joint has both a concave and a convex surface that fit together, resembling a saddle?

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

What type of joint is exemplified by the shoulder and hip joints, allowing movement in all planes?

<p>Ball and socket joint (C)</p> Signup and view all the answers

Which type of joint in the thumb is the best example of a saddle joint?

<p>Metacarpophalangeal (MCP) joints (D)</p> Signup and view all the answers

Which part of the synovial joint secretes synovial fluid to lubricate the joint?

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

"Reinforcing ligaments" in a synovial joint are responsible for:

<p>Attaching bones together and providing stability (A)</p> Signup and view all the answers

What is the primary role of articular surfaces in influencing joint stability?

<p>Usually playing only a minor role in stability (A)</p> Signup and view all the answers

How much can ligaments stretch beyond their normal length before tearing?

<p>6% (B)</p> Signup and view all the answers

What is the function of muscle tone in relation to joint stability?

<p>Maintains constant low-level contractile force on ligaments (A)</p> Signup and view all the answers

Which of the following is NOT an angular movement that occurs along the sagittal plane?

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

What type of movement involves flexion + abduction + extension + adduction of a limb?

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

Which motion involves turning the hand backward?

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

In hinge joints, what type of motion occurs between bone components?

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

'Opposition of the thumb' involves a movement in which type of joint?

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

What is the function of synovial fluid in the joints?

<p>To cushion and lubricate the joint structures (C)</p> Signup and view all the answers

What is the primary purpose of bursae in relation to joints?

<p>To provide a cushion between structures that rub together (C)</p> Signup and view all the answers

Which structure is responsible for reducing friction between tendons and bones subjected to movement?

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

What is the Latin meaning of 'bursa' in the context of joints?

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

In a synovial joint, what is the primary role of the articular disc or meniscus?

<p>To connect bone ends of different shapes together (D)</p> Signup and view all the answers

How do bursae contribute to joint function?

<p>By acting as a cushion and reducing friction between structures (A)</p> Signup and view all the answers

Which component of a synovial joint acts like a protective sac lined by synovial membrane?

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

What is the main function of reinforcing ligaments in a joint?

<p>To strengthen and stabilize the joint structure (B)</p> Signup and view all the answers

What is the main function of articular cartilage in the joints?

<p>To absorb compression and protect ends of bones from being crushed (D)</p> Signup and view all the answers

Which type of ligament is part of the fibrous capsule of a joint?

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

What is the function of synovial fluid in the joints?

<p>Nourishes cartilage and acts as a lubricant (D)</p> Signup and view all the answers

What is the inner layer of the articular capsule made of?

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

Which structure in the joint helps to monitor stretch and sense body movements?

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

What is the function of reinforcing ligaments in some joints?

<p>Reinforce the joint structure (B)</p> Signup and view all the answers

What does the weeping lubrication process involve?

<p>Squeezing synovial fluid into and out of the cartilage to nourish cells (B)</p> Signup and view all the answers

What is the composition of the outer layer of the articular capsule?

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

Describe the unique movement allowed by hinge joints.

<p>Uniaxial movement in one plane, like flexion and extension</p> Signup and view all the answers

What type of movement is permitted by pivot joints?

<p>Rotation around its long axis</p> Signup and view all the answers

Explain the characteristic movement of condyloid joints.

<p>Movement in two planes: flexion, extension, abduction, adduction, and circumduction</p> Signup and view all the answers

What is the defining feature of saddle joints?

<p>Bones have both concave and convex surfaces that fit together like a rider sitting in a saddle</p> Signup and view all the answers

Describe the range of motion allowed by ball and socket joints.

<p>Multiaxial movement in all planes: flexion, extension, abduction, adduction, rotation, and circumduction</p> Signup and view all the answers

Which type of joint allows for only movement in one plane?

<p>Hinge joints</p> Signup and view all the answers

What type of joint enables rotation of a bone around its long axis?

<p>Pivot joint</p> Signup and view all the answers

Which joint type has both concave and convex surfaces that fit together?

<p>Saddle joint</p> Signup and view all the answers

In which joint type can bones move in multiple directions?

<p>Condyloid joint</p> Signup and view all the answers

Which joint type provides the highest degree of movement in all planes?

<p>Ball and socket joint</p> Signup and view all the answers

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