Skeletal system

how do bones serve the human body?

gives structure, protects organs, makes blood cells through marrow

What is bone marrow?

A soft tissue inside the bone that produces blood cells, works w/ muscles for movement, gives shape and support to body.

What are joints?

Area where two bones meet, provides flexibility

What are bones mostly made of?

Collagen and calcium

What are ligaments?

Connect bone to bone, provides range of motion.

What is the function of the skeletal system?

Protects and supports body organs; stores minerals, creates red blood cells

how many bones does a human have as an adult?

around 206

How many bones are in the human body at birth?

around 300-350

What are cartilage?

thick, tough, flexible tissue that covers ends of bones. acts as cushions between bones at joint & protects bones.