Human Body in Motion Test #1

A bundle of nerves that extends from the brain down along the center of the back

joints that allow you to move

upper arm muscle that becomes short and thicker when you bend your elbow

An adult’s body has 206 bones, but a baby has about 75.

Name two bones that protect your organs

Your spinal cord is the pathway to and from your heart

Your five senses are

It takes 100 muscles to take a single step.

Joints where bones can turn from side to side (swivel chair).

happens when you shorten muscles

Joints that let bones swing back and forth like a door

joints that cannot move

happens when a ligament is stretched too far, it can range from overstretching to a rip of the ligament

Shivering is your body’s way of getting you moving to warm you up.

happens when a muscle or tendon (instead of a ligament), is stretched too much or torn

At rest; when muscles are not actively contracting.

Your brain is the command center for your body

Tendonitis occurs when you overdo an activity.

The organ system that includes the brain, spinal cord, sensory organs, and nerves

A quick, unplanned response

Joints where bones can move in a complete circle

The tough, inelastic (not stretchy) bands that attach muscle to bones

The name for the pairs of muscles that take turns contracting (shortening) and relaxing so we can move our limbs.

Name two ways to be good to your joints

Reflexes happen without a decision by the brain.

   occurs when you “overdo” an activity, repeating it over and over again

A point on the skeleton where two or more bones come together

Long, thin body parts that send messages from your brain to parts of your body, and from your body parts to your brain

The tough, rope-like bands that hold most bones in place at a joint

The command center of the nervous system

The stretchy, elastic structures in the body that have the special ability to contract (shorten)

A response to a change in the environment