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 62
Cell
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