Homeostasis and the Skeletal System

Pg 63

Homeostasis• Homeostasis – • The body’s ability to regulate its inner

environment• Keeping the body’s systems in the right

balance• Staying alive

What could throw off your homeostasis?

• Pathogen – something that causes disease (example: bacteria or a virus)

What happens if the body can’t keep its homeostasis?

• If the body can’t maintain it’s homeostasis, it can cause permanent damage or death!

Pg 62- Glue in the diagram of the skeleton and label:

• Skull• Phalanges• Humerus• Radius & ulna• Tibia & Fibula• Femur• Rib cage

• Spine/ vertebrae• Clavicle• Pelvis• Patella• (use the book pg

900)

Pg 62Cell

Tissue

Organ

Organ system

Organism (body)

Watch the video and answer these 2 questions in your notes:

1. What are the 2 minerals stored in your bones?

2. How strong are your bones?

In the center of the bone is the red bone marrow. It produces…(3 things – look on pg 903 of your book)1. Red blood cells (carry oxygen in your blood)2. White blood cells (fight infection)3. Cell fragments (help your blood clot)

Problems with Bones

• Leukemia – cancer of the bone marrow.

• Osteoporosis – the bones do not have enough calcium and therefore become soft or brittle