Question

bone external features

external feature	function (what it does)	location (where you find it on the bone) describe and sketch
diaphysis
metaphysis
cartilage

Explanation:

Epiphysis: Site of growth and joint - formation. Located at the ends of long bones. It is involved in bone lengthening during growth and forms the articulating surface of joints.
Diaphysis: Main shaft of long bone, provides strength and support. Runs along the central part of long bones. It contains bone marrow and is a major site for muscle attachment.
Metaphysis: Region between epiphysis and diaphysis, involved in bone growth and remodeling. Located at the transition zone between the end and the shaft of long bones. It contains the growth plate (epiphyseal plate) in growing bones.
Cartilage: Reduces friction and absorbs shock in joints. Found at the ends of bones in joints, and also in areas like the nose and ears. In the context of long - bones, it covers the epiphyses to provide a smooth articulating surface.

Answer:

External Feature	Function (what it does)	Location (where you find it on the bone) Describe and sketch
Diaphysis	Main shaft, provides strength and support	Central part of long bones. Sketch: A long, cylindrical part of the bone.
Metaphysis	Involved in bone growth and remodeling	Transition zone between epiphysis and diaphysis. Sketch: The area between the end and the shaft of a long - bone.
Cartilage	Reduces friction and absorbs shock in joints	Covers the ends of bones in joints. Sketch: A thin layer over the bone - end in a joint diagram.