IV. Chapter 4 Flashcards
(36 cards)
What vital organs do the skeletal system protect?
Cranium (brain), ribs (heart and lungs), vertebral column (spinal cord)
What are the functions of the skeletal system?
- The skeleton gives the body support and shape.
- The skeleton protects vital organs
- The skeleton is an important process of movement
- Your bones store minerals
- The bone marrow in your bones produce blood cells
How many bones are there in an adult and child body?
206 bones in an adult body and 300 bones in a child’s body
What happens to the bones in a child?
They’re separated by regions if cartilage which grow or fuse together as the body matures to form solid bones.
Tendon
Connects a bone to the muscle
Ligament
Connects a bone to a bone
Cartilage
Surrounds organs and composes body parts; lines the ends of bones where they meet in a structure called a joint
What is synovial fluid?
It’s a fluid between your bones and cartilage at your joints which acts as a lubricant between bones to help them move
What’s a joint?
A place where two or more bones come in contact with one another.
Ball and socket joint
A joint in which the head of one bone fits into a groove or indentation called a socket of another bone(s): shoulder and hip. This joint allows movement in virtually any direction.
Pivot joint
Allows movement in a semi-circular motion: where spine attaches to cranium or the joint between the radius and the ulna.
Hinge joint
Joint between bones that allows movement in only one direction: ulna and humerus (elbow), femur and tibia (knee), joints of the digits (fingers and toes)
Plane joint
Joint where flat bones meet to glide or slide against one another- joints of the wrists and ankles.
Saddle joint
Joint that allows movement in two directions, like the thumbs, allowing it to cross over the hand.
Immovable joint
Joints where bones meet that cannot move; the bones that make up the skull (cranium)
Bones are living and require…
Blood, food and oxygen like any other tissue
Girls and boys’ bones will grow until…
Girls, 16 years old
Boys, 18 years old
Yellow bones marrow stores…
Fats (in the middle part of the bones)
Red bone marrow makes…
Red blood cells, white blood cells, and platelets (found in flat bones like ribs, scapula, pelvis, and at the end long bones)
Cranium
Composed of eight bones fused together (in the head or the skull)
Vertebrae
33 bones at birth that make up the vertebral column to protect the spinal cord, some of these fuse together as you grow do that an adult has 24 individual vertebrae and 2 sets of fused vertebrae.
Mandible
Jawbone
Clavicle
Collar bone
Scapula
Shoulder blade