Chapter 6: Movement (Human Skeletal System)

Content Standard:

Support, Movement and Growth in Animals

Learning Standard:

Dissect the human skeletal system

Learning Activities:

Hi everyone! How are you doing? I think everyone already know that Conditional Movement Control Order (CMCO) is extended until 9th June 2020. But do not worry because we still can learn Science via online. As long as you follow the lesson, I believe you can learn as much as you learn in school. So be positive and stay strong. "Syok juga bah kan belajar di rumah"  So today's lesson is very simple. We are going to learn about human skeletal system. If you have Science textbook with you, turn to page 122 and 123. "If you don't have, don't worry bah, you still can learn."

HUMAN SKELETAL SYSTEM

• Human skeleton is made up of 206 bones of various sizes and shapes. The human skeleton can be divided into two parts, that are the axial skeleton and the appendicular skeleton. 
• The axial skeleton consists of: skull, vertebral column, sternum, ribs
• The appendicular skeleton consists of: pectoral girdle, upper limbs, pelvic girdle, lower limbs

Diagram 1: Axial skeleton and Appendicular skeleton

Diagram 2: Axial skeleton and Appendicular skeleton with label

AXIAL SKELETON

SKULL		CRANIAL BONES: to protect bones FACIAL BONES: to provide the basic shape of the framework for the face and also to support the teeth
VERTEBRAL COLUMN		Consists of 33 small bones Bones are connected to form a strong and flexible column To protect spinal cord
RIBS & STERNUM		12 pairs of ribs 7 pairs attached to the sternum 3 pairs indirectly connected by cartilage 2 pairs hang freely To protect the main organs (heart and lungs)

APPENDICULAR SKELETON

PECTORAL GIRDLE		Connects the upper limbs to the axial skeleton. Consists of clavicle and scapula
UPPER LIMB		Consists of humerus, radius, ulna, carpus, metacarpus and phalanx.
PELVIC GIRDLE		Connected to the axial skeleton Supports weight, protects the bladder and reproductive organs
LOWER LIMB		Consists of femur, tibia, fibula, tarsus, metatarsus and phalanx

Exercise:

Draw and LABEL a complete human skeletal system on A4 paper. Please draw as nice as possible. Submit before 4pm today (12th May). That's all for today. If you already learn about human skeletal system, just leave comments below. All comments are much appreciated. Have a good day and stay at home.

References:

1. Science (DLP) KSSM Form 4 textbook
2. https://www.slideshare.net/Firedemon13/axial-skeleton-parts-1-2
3. http://ciaranbtecsportblog.blogspot.com/2015/09/cranium-cranium-is-located-just-above.html
4. http://www.napavalley.edu/people/briddell/Documents/BIO%20105/Ess%20of%20AP%209%20ed/8e_START_HERE_CH07_LECTURE.pdf
5. https://www.spineuniverse.com/anatomy
6. https://www.quora.com/How-do-pectoral-girdle-and-pelvic-girdle-differ
7. https://courses.lumenlearning.com/ap1x94x1/chapter/the-lower-limbs/