Skeletal System

How many bones does an adult human have?

• 210
• 206
• 200
• 296

How is cartilage important in the skeletal system?

• cartilage provides the connection from one bone to another bone. For example, your knee has cartilage that connects the upper leg bone to the lower leg bone.
• cartilage provides the connection from muscle to bone. For example, the biceps brachii is attached to your radius lower arm bone.
• cartilage is found at the end of bones and is made of tough protein fibers, called collagen, within which cartilage provides smooth surfaces for bone to rub against.
• none of these answers are correct because cartilage is part of the muscular system.

Which of the following makes up the structure of your skeletal system?

• ligaments
• cartilage
• bones
• all of the answers are correct

Compact bone can be defined as

• the dense outer layer of the bone
• found at the center of the bone, within which is storage for mineral deposits.
• the producer of red blood cells found within our body.
• the producer of white blood cells found within our body.

Which of the following structures found within bones is the producer of red blood cells?

• spongy bone
• compact bone
• red bone marrow
• yellow bone marrow

Why do babies have more red bone marrow than adults?

• Red bone marrow produces white blood cells, within which babies are able to fight off disease and sickness.
• Red bone marrow produces calcium for the bones, within which the bones are able to slowly calcify as they grow.
• Red bone marrow produces red blood cells. These red blood cells are able to produce oxygen for the body, within which this process will allow babies to grow.
• Red bone marrow produces homeostasis antibodies found within babies bodies. This is to better fend off diseases and sickness.

As we grow, cartilage is replaced by calcified bone

• True
• False

A baby is born with zones of cartilage in its bones that allow growth of the bones. These areas, called growth plate, allow the bones to grow longer as the child grows. By the time the child reaches an age of about 18 to 25 years, all of the cartilage in the growth plate has been replaced by bone. This stops the bone from growing any longer.

• True
• False

What is the main purpose of cartilage in the skeletal system?

• Cartilage allows you to turn your neck.
• Cartilage protects your soft organs.
• Cartilage prevents your bones from being broken.
• Cartilage cushions bones to keep them from grinding together

Which of the following skeletal system parts is connective tissue that keeps your bones attached to each other?

• joints
• tendons
• cartilage
• ligaments