Skeletal System

Warm Up: Video “Did You Know” – The Human Body!

What was one thing from the video that you learned that you “Did NOT Know” before?

Critical Thinking Review with a partner or group of three…

Make a list (yes that means you need to write down your ideas) of words or phrases that describe the different functions of bones.

Simply Stated: What are our bones used for?

Here are some possible answers you could have brainstormed with your group.

• Allow for movement• Provide support – ex. There are 24 bones

called vertebrae which make up your back bone. Together, these bones support your head and upper body and protect your spinal cord.

• Protect other parts of your body – What do the cranium and ribs protect?

• Form new blood cells• Store minerals

Your bones are made up of both living and non-living parts or structures.

What are the living/non-living materials that make up your bones?

Living Materials:Bone Cells

Cartilage Cells

Blood Vessels

Connective Tissue

Nerves (Neurons)

Non-Living Materials

Minerals such as Calcium

• What does Calcium do for our bones?• It strengthens our bones.

Terms:

Joint - the point where two bones meet

Ossification - is the hardening of bones

- Involves the deposits of calcium between the bone cells which make the bone stronger.

What?!

What is this suppose to represent?

- A joint…

Parts of the Bone: Definitions!Periosteum – thin , tough, and pink membrane covering the outer layer of the bone.

- It is living tissue surrounding bone and it contains red blood cells and repairs injuries to the bone.

Parts of the Bone: Definitions!

Articulating Cartilage -

It covers the ends of bones so that it is smooth for sliding.

Definitions:Spongy Bone:

It is located towards the end of your bones. It the area in your bone that absorbs shock, contains red bone marrow, and produces red blood cells.

Definitions:Marrow - soft layer of bone material located in the hollow

Definitions:Bony Layer: - calcified boneIt is located below the periosteum and contains channels that are called,Haversain Canals -

Haversain Canals -

Contain blood vessels that provide the bone with oxygen and nourishment for its cells.Ossification – occurs when cartilage cells are replaced by bone cells

Anatomy of the Bone

• Please take out your worksheet that I gave you and let’s label the parts of the bone together.

Anatomy of a Bone

Anatomy of a Bone

Spongy Bone

Spongy Bone

Growth Plate

Growth PlateArticular Cartilage

Articular Cartilage

PeriosteumMedullary Canal

Softball Review! Homework:

Study your notes for a quiz next Thursday on the “Structures of the Bone”.