Review the key concepts, formulae, and examples before starting your quiz.
🔑Concepts
Skeletal tissues are a type of Supportive Connective Tissue that forms the endoskeleton of the vertebrate body.
Bone is a very strong and non-flexible tissue. Its matrix is hard and composed of Calcium () and Phosphorus () compounds.
The cells present in bone are called Osteocytes, which are embedded in a hard matrix arranged in concentric layers called lamellae around Haversian canals.
Cartilage has widely spaced cells called Chondrocytes. The solid matrix is composed of proteins and sugars, making it firm but flexible.
Cartilage smoothens bone surfaces at joints and is also present in the nose, ear, trachea, and larynx.
Ligaments are very elastic and have considerable strength. They contain very little matrix and connect two bones ().
Tendons are fibrous tissues with great strength but limited flexibility. They connect skeletal muscles to bones ().
📐Formulae
💡Examples
Problem 1:
Why is bone tissue hard while cartilage is flexible?
Solution:
The hardness of bone is due to a matrix rich in and salts, whereas cartilage flexibility comes from a matrix of proteins and sugars.
Explanation:
Bone matrix is mineralized with Calcium Phosphate, which provides structural rigidity. Cartilage matrix contains chondrin (a protein), allowing for compressibility and flexibility.
Problem 2:
A person met with an accident in which two long bones of the hand were dislocated. Which tissue might be broken?
Solution:
The Ligament.
Explanation:
Ligaments are the connective tissues that link one bone to another. A dislocation usually involves the tearing or overstretching of these connectors.
Problem 3:
Identify the tissue that connects the Calf Muscle to the Heel Bone.
Solution:
The Tendon (specifically the Achilles Tendon).
Explanation:
Tendons are specialized connective tissues that join to , facilitating movement by transmitting the force of muscle contraction to the bone.