Skeletal and Muscular Systems

Why do adults have less bones than babies?

• Some bones are broken down as the person gets older
• Some bones fuse together as a person gets older
• Some bones disappear

Match:
1) Compact bone         A) cushions the joints
2) Spongy bone           B) contains red marrow
3) Cartilage                  C) strong, bears weight

• 1-A , 2-B , 3-C
• 1-C , 2-B , 3-A
• 1-B , 2-C , 3-A

A hinge type of joint is one that moves back and forth only. Which one below is an example of hinge type of joint?

• Elbow
• Shoulder
• Skull bones

A socket type of joint is one that can move to multiple directions. Which one below is a socket type of joint?

• Elbow
• Shoulder
• Skull bones

An immovable type of joint does not have the ability to move. Which one below is an immovable type of joint?

• Elbow
• Shoulder
• Skull bones

What is the difference between ligament and tendon?

• Ligament connects bone to bone; tendon connects muscle to bone
• Ligament connects muscle to bone; tendon connects bone to bone
• Ligament and tendon are different names for the same structure

What is the importance of the red bone marrow?

• It protects the bones, cushioning joints and reducing friction
• It contains fat cells, that help reduce the weight of the bones
• It produces blood cells

Which option below is a voluntary movement? (use muscles you can control)

• Heart pumping blood
• Intestinal muscles moving food for digestion
• Clicking on the correct answer for this question

Which option below is an involuntary movement? (use muscles you cannot control)

• Breathing
• Running
• Waving

Where is the skeletal muscle found?

• Attached to bones
• Inside hollow organs such as stomach and intestines
• Heart