During class on Friday we handed in our Cell Project that was due on Friday. After that we went over our notes on Section 1: Body Organization and Homeostasis and Section 2: The Skeletal System. We discussed some topics regarding of what we are learning.
We also filled out the diagram concerning the different bones in the Skeletal System. We labeled the different parts of the bones in the Skeletal System.
If you follow this link ( http://www.encognitive.com/images/skeletal-system.jpg ) it will take you to a picture of a skeletal system with its bones labeled. It will help you fill out the diagram.
For those who weren't here, these are some important notes (NOT ALL) we discussed during class.
Section 1: Body Organization and Homeostasis
- Homeostasis: Process of internal environment keeping balanced and stable. (Not being affected by outside environment)
Example of Homeostasis: When the internal body temperature is close to 37°C despite the temperature of the air around you. (Except when you're sick.)
Things that disrupts Homeostasis: Stress, Illnesses (Cold etc...)
Section 2: The Skeletal System
- 5 Major Functions of the Skeletal System
a) Provides shape and support
b) Enables movement
c) Protects Organs
d) Produces blood cells
e) Stores minerals/material until they are used
Joint: A place where two bones meet. Allows bones to move in different ways.
Two kinds of joints: Immovable & Movable
Immovable Joints: Allows little/no movement. Ex. Joints at skulls.
Movable Joints: Allow body to make wide range of movement.
Ligaments: Connective tissues. Hold bones in movable joints.
Cartilage: Connective tissues. Flexible than the bone. Cover ends of bones. Keeps from bones rubbing against each other.
Four ways of how joints work
- Hinge Joints: Allow forward/ backward motion. Ex. Elbow
- Ball-and-Socket Joints: Allow greatest range of motion. Ex. Joint in shoulder
- Pivot Joint: Allows one bone to rotate around another. Ex. Neck
- Gliding Joint: Allows one bone to slide over another. Ex. Wrist & Ankle.
Osteoporosis: Condition where the bones lose minerals and break easily. Occurs when the bones lack calcium.
The picture on the left shows how a normal bone looks like. The picture on the right shows a bone with Osteoporosis.
During our discussions at the end of class we were discussing relationship science has to the world. We were talking about where (in the world) we think Osteoporosis occurs the most. Some people thought it was China because of the population and the number of Asians who are lactose intolerant. Others thought is was Africa because of economic state and how they are not able to afford milk, which contains an abundance of calcium. Ms. D told us that people in Africa obtains calcium by putting calcium in their bread! We ended our class with the discussion.
http://kidshealth.org/teen/your_body/body_basics/bones_muscles_joints.html If you visit this link it talks more Body, Muscles, and Joints. So some of the information may help you when you're studying!
Homework!!!
- Email Ms.D about Bodies Revealed (Due Tuesday, March 25th)
- Write Notes for Chapter 3
- Comment to 6th/7th/8th Blog
You could go on Moodle (http://zagreb.ceesa.net/course/view.php?id=105) to check more information about the following weeks!
Remember to bring COLOR PENCILS to class on Tuesday.
Next scribe is ANTONIA!!!
