Indicate whether each of the following descriptions better matches bone (B) or cartilage (C). Your answer would be a four-letter string composed of letters B and C only, e.g. CCCC.
( ) Its extracellular matrix is mainly composed of type I collagen and calcium crystals.
( ) Its extracellular matrix is made by osteoblasts.
( ) It grows by expansion (as opposed to surface apposition).
( ) Its cells are connected via canaliculi and form gap junctions.

Question

Indicate whether each of the following descriptions better matches bone (B) or cartilage (C). Your answer would be a four-letter string composed of letters B and C only, e.g. CCCC.
( )	Its extracellular matrix is mainly composed of type I collagen and calcium crystals.
( )	Its extracellular matrix is made by osteoblasts.
( )	It grows by expansion (as opposed to surface apposition).
( )	Its cells are connected via canaliculi and form gap junctions.

Quizplus · Accepted Answer

Produced by osteoblasts and growing by surface apposition, the dense and rigid bone matrix is composed of tough type I collagen fibrils and solid hydroxylapatite crystals. Osteocytes that have become trapped in this matrix are connected to each other through tiny channels called canaliculi. Cartilage tissue is composed of chondrocytes embedded in a uniform and highly hydrated matrix and grows by expanding.

Indicate Whether Each of the Following Descriptions Better Matches Bone