Body Organization & Skeletal system
Organ system
group of organs that work together to perform a specific function
Organ
group of tissues that work together to perform closely related functions
Hinge Joints
joints that move back and forth like the movement of a door hinge. These joints are located at your fingers, toes, elbows, and knees.
Femur
large upper leg bone
What is the structure of Bone?
1. Inside bone is blood vessels and nerves 2. Three parts of bone a. Compact bone- hard and dense b. Spongy bone- contains small spaces and lightweight (found at ends of bone) c. Marrow- spaces in bone that contain soft tissue Red Marrow- produces blood cells Yellow Marrow- stores fat as an energy source
What do bones do?
1. Provide shape and support to the body 2. Enable you to move 3. Protects internal organs
How many bones does a human have?
206
Pivot Joint
allows movement from side to side and up and down found in the base of the skull.
What is cartilage?
connective tissue that is more flexible than bone Examples- found at ends of bones, in between vertebrae, ribs, nose, and ears
skull
cranium
Lower jaw
mandible
Knee
patella
What are the bones in the hand called?
phlanges, metacarpals, carpals
What are the bones in the foot called?
phlanges, metatarsals, tarsals
Characteristics of Bones
Bones are lightweight Bones are Strong
Ribs
Bones supporting and protecting the chest cavity, costals
Fibula
Calf Bone- the outer and thinner of the two bones of the human leg between the knee and ankle
Clavicle
Collar bone- bone linking the scapula and sternum
Upper jaw
Maxilla
tibia
Shin bone- the inner and thicker of the two bones of the human leg between the knee and ankle
Coccyx
Tailbone- the end of the vertebral column in humans and tailless apes
Cells
The basic unit of structure and function in living things
Skeletal system
The bodily system that consists of the bones, their associated cartilages, and the joints, and supports and protects the body, produces blood cells, and stores minerals.
Gliding Joint
allow some bending and twisting (ex. Wrists or joints between vertebrae)
Tissue
a group of similar cells that perform the same function
Immovable Joint
a joint that allows little to no movement. Examples are joints that hold together the bones of the skull.
Ball and Socket joint
a joint type that enables movement in all directions such as in your shoulders and hips
Humerus
bone extending from the shoulder to the elbow
shoulder blade
scapula
Ulna
the inner and longer of the two bones of the forearm ( lower part of the arm) pinky side
Sternum
the middle of the chest (connects the ribs), breastbone
Radius
the outer and slightly shorter of the two bones of the forearm ( lower part of the arm) Thumb side
ligaments
tissue that connects bone to bone
spine
vertabrae
Joints
where TWO bones come together