science ch 2 sec 1 the skeletal system 1st part

Hinge

Allows forward and backward motion Knee

Pivot

Allows one bone to rotate around another bone Arm and elbow side to side

Gliding

Allows one bone to slide over another Wrist which allows to move and flex

Ball-and- socket

Allows the greatest range of motion Hip that allows you to swing you leg in a circle

How does your skeleton allow you to move?

It has joints and separate bones. These joints allow you to move you arm.

How is the human body's framework like that of a building?

It is built perfectly so that your body wont collapse and it is structured to hold itself together.

Why is the vertebral column so important to your skeleton?

It is the main structure for your whole body if you didn't have your spine you would be able to move you would be paralyzed.

What happens when your body needs this mineral?

It weakens and wouldn't be able to carry out its particular function and would slowly die.

What would your body be like if it didn't have a skeleton?

It would not have a structure and would flop around for movement. The body would not be able to hold itself up

What is the human body's framework?

Its like a frame of a house or a building. Every bone in your body allow movement and the ability to function properly.

What important substance is made in the long bones of your body?

Marrow which fills the spaces in some of your spongy bone it produce most of your blood cells and it stores fat.

What is a movable joint?

Most joints are movable they allow the body to make different movements.

What important mineral does your bone store?

Phosphorus and calcium

Why would your body need both movable and immovable joints?

So some body parts have support for example if we had a ball and socket joint on our knee our weight would not allow us to walk because the knee would go crazy. That why we have both so we wouldn't have a hard time doing physical activities.

Bones make and store important substances for your body.

Some like compact bones contains minerals that give the bone its strength to grow

What is considered to be the center of your skeleton?

Sternum

What are 5 major characteristics of bones?

i. Complex living structures ii. develop and repair themselves iii. strong iv. light weight v. grow

What are the 2 types of joints?

i. immovable ii. movable

What are the 5 major functions of your skeleton?

1. Provides shape 2. support 3. allows you to move 4. protects 5. produce blood cells 6. stores minerals

How many pairs of ribs does the human body have?

12 and 2 pairs are floating ribs.

How many bones make up your skeleton?

206

How many vertebra make up your vertebrae (backbone)?

26

Give an example of where an immovable joint is found.

Bones of the skull

What are immovable joints?

Connect bones but allow little movement between the 2 bones

What type of tissue is red and yellow marrow?

Connective tissue

Why are joints important?

If we didn't have joints we wouldn't be able to bend our arms or legs this body part allows our bones to fit together and provides the ability to move

How would your legs move if your knees were ball-and-socket joints?

If we had a ball and socket joint on our knee our weight would not allow us to walk because the knee would go crazy

Give 2 examples of how your skeleton protects vital organs?

The ribs are like a natural cage that protects the organs that are within it. Without a certain types of bones our organs will be venerable to injuries.

What would happen if your skull had movable joints?

We would be able to do some freaky things like spin your head in a circle on a full rotation.

How would your movement change if your backbone were one long bone instead of individual bones?

We would not be ability to bend backward, sideways or even forward the individual bones allow us to move and bend.