Which one of the following pairs of structures are correctly matched with their description?
Correct answer: B. Cartilage and cornea - No blood supply but require oxygen for respiratory needs
- A. Tibia and fibula - Both form parts of the knee joint
- B. Cartilage and cornea - No blood supply but require oxygen for respiratory needs
- C. Shoulder joint and elbow joint - Ball and socket joints
- D. Premolars and molars - 20 in all and 3 rooted
Explanation
Cartilage is avascular, as the blood vessels innervate the perichondrium allowing nutrition to diffuse into cartilage cells. The cornea is also avascular.
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About Support and Movement
Support and movement covers the axial and appendicular skeleton, bone structure, joints and the arrangement of skeletal muscles. Muscle contraction is explained through actin, myosin, sliding filaments, calcium ions and ATP, while arthritis is distinguished as a disorder of joints rather than a normal part of movement.
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