Joint Venture
These joints allow zero movement and are found in your skull, where the bones are fused together by fibrous tissue (like sutures).
What are immovable joints?
This soft tissue found inside bones produces blood cells (in the red type) and stores fat (in the yellow type).
What is marrow?
This common condition involves inflammation of the joints, causing pain, stiffness, and swelling.
What is arthritis?
Mature bone cells
What are Osteocytes?
This voluntary, striated muscle is attached to bones and moves your body.
What is skeletal muscle?
These are the freely moving joints that let your arms, legs, and other body parts bend and rotate; most of the joints in your body fall into this category.
What are movable joints?
This is the dense, hard outer layer of bone that gives the skeleton its strength.
What is compact bone?
This cancer starts in the bone marrow and produces abnormal white blood cells that crowd out healthy blood cells.
What is leukemia?
These long, cylindrical cells make up skeletal muscle and are responsible for voluntary movement.
What are muscle fibers?
This type of muscle control means you can decide when to move it, like when you raise your hand or kick a ball.
What is voluntary?
Also called partly or slightly movable joints, these allow only limited movement—think of the ones between the vertebrae in your spine that give your back a little give.
What are flexible joints?
This flexible, cushiony tissue covers the ends of bones at joints and makes up structures like your nose and ears.
What is cartilage?
Nicknamed “brittle bone disease,” this genetic condition causes bones to break very easily, often with little or no trauma.
What is osteogenesis imperfecta?
This term describes the striped appearance of skeletal and cardiac muscle cells under a microscope.
What is striated?
This type of muscle control happens automatically without you thinking about it, such as your heartbeat or digestion.
What is involuntary?
This type of freely movable joint lets you move in almost any direction; your shoulder and hip are the classic examples.
What is a ball and socket joint?
This strong band of connective tissue connects bone to bone and helps stabilize joints.
What is a ligament?
Also known as Lou Gehrig’s disease, this progressive disorder attacks motor neurons and leads to muscle weakness and paralysis.
What is ALS?
These specialized muscle cells make up the heart and contract rhythmically to pump blood.
What are cardiomyocytes?
This involuntary muscle is found in the walls of organs like the stomach and intestines; it has no striations.
What is smooth muscle?
This joint works like the hinge on a door, allowing movement mainly in one plane (back and forth); your elbow and knee are prime examples.
What is a hinge joint?
This tough, fibrous connective tissue attaches muscle to bone so you can move.
What is a ligament?
This group of genetic disorders causes progressive weakness and loss of muscle mass over time.
What is muscular dystrophy?
These three types of blood cells are all produced in the bone marrow—some carry oxygen, others fight infection, and the tiny ones help with clotting.
What are RBCs, WBCs, and platelets?
This involuntary, striated muscle is found only in the heart and contracts to pump blood.
What is cardiac muscle?