Question

Which one of the following pairs of structure is correctly matched with their correct description?

• A. Tibia and radius - Both form parts of knee joint
• B. Cartilage and cornea - No blood supply but do require oxygen for respiratory need
• C. Shoulder joint - Gliding type of joint
• D. Premolars and molars - 20 in all 3-rooted

Answer 1

The correct option is B Cartilage and cornea - No blood supply but do require oxygen for respiratory need

Cartilage is devoid of blood supply. The nutrients diffuse through a dense connective tissue surrounding the cartilage (called the perichondrium) and into the core of the cartilage. Due to the lack of blood vessels, cartilage grows and repairs more slowly than other tissues. The cornea also has no blood supply; it gets oxygen directly through the air. Oxygen first dissolves in the tears and then diffuses throughout the cornea to keep it oxygenated.

So, the correct answer is option B.