SOC 12: Skeletal System Flashcards
What is the Skeletal System?
The skeletal system includes all of the bones and joints in the body. Each bone is a complex living organ that is made up of many cells, protein fibres and minerals.
5 Functions of the skeletal system
Protection of Vital Organs
Muscle Attachment
Joints for Movement
Strong Calcium and Phosphorous
Red and White Blood Cells
Tendons
Tendons are non-elastic fibres that attach muscle to bone and help to move them. Tendons let you apply power and movement. Tendons also grow in strength the more you use them.
What are the 4 types of bones?
Long Bones
Short Bones
Irregular Bones
Flat Bones
Long Bones
Longer Bones are longer than they are wide. They don’t have to be big, small bones like finger bones (Phalanges) count as long bones. A long bone has a shaft and 2 ends.
Short Bones
Short Bones are normally the same length,width and thickness. The only short bones in the body are the carpals (cuffs) in the wrist and (tarsals toes) in the foot.
Flat Bones
Flat bones usually protect organs or offer a good surface for muscles to attach to. For example, the ribs protect the heart and lungs, while the broad scapula as 3 muscles attached to it. Other flat bones are; scapula, cranium and clavicle.
How many bones are there in the body?
206 bones
How many important bones are there in the human body?
22
What is the bone in the upper arm?
Humerus
What is the bone behind the shoulder?
Scapula
What is the bone in the upper leg?
Femur
What is the bone in the collarbone?
Clavicle
What is the bone in your head?
Cranium
What is the inside bone in your lower arm called?
Ulna
What is the outer bone in your lower arm called?
Radius
What is the bone in the centre of your body?
Pelvis
What are the 3 bones in your feet?
Tarsals, Metatarsals and Phalanges
What are the 3 bones in your hands
Carpals, Metacarpals, Phalanges
What is the bone in the kneecap?
Patella
What is the bone in the chest?
Ribs
What are the bone in between in the ribs?
Sternum
What is the bone in the lower inside leg?
Tibia
What is the bone in the outer lower leg?
Fibula
Ligaments
Are elastic fibres that join one bone to another, usually to hold things together and keep them stable. They keep your skeleton supported whilst allowing movement.
What is the section of the vertebrae with the most bones in one?
Thoracic section
What is the section in the vertebrae with the least amount of bones?
Coccyx
The 5 sections of the vertebrae
Cervical, Thoracic, Lumbar, Sacrum, Coccyx
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