Body Systems Flashcards
What is the role of the skeletal system?
- Supports and protects the body
- Provides a framework for movement
- Stores minerals
- Manufactures blood in the bone marrow
What are the functions of the skeletal system?
Functions of the skeletal system
- Support
- Attachment
- Movement
- Protection
- Blood Cell Production
- Storage
what does support mean in the skeletal system?
Skeletal provided a framework for the body
what does movement mean in the skeletal system?
Muscles attach to bones via tendon
what does attachment mean in the skeletal system?
The bones of the skeleton provide an attachment surface for the muscles, tendons and ligaments
what does protection mean in the skeletal system?
Provides vital organs
what does blood cell production mean in the skeletal system?
The generation of the blood cells, which happens in the bone marrow
what does storage in the skeletal system mean?
Bone serves as a mineral storage deposit in which nutrients is stored and retrieved
What are the types of bones in the skeletal system?
- Long bone
- Short bone
- Flat Bone
- Irregular bone
- Sesamoid bones
Long Bone
Long bones are longer than they are wider
- Femur
- Tibia
- Metalats
- Phalanges
Short Bone
roughly cubed shaped
- Carpels
- Tarlses
- Patellas
Flat bone
strong bones
- Scapula
- Frontal
- Pubis
- Hipbone
- Nasal Bone
Irregular Bone
thin layers of compact bone surrounding a spongy interior
- Vertebrae
- Coccyx
- Temporal
- Maxilla
Sesamoid bone
small and irregular shaped
- Patella
What do Joints do?
Joints allow for movement and stability
Three types of joints. Think: Fuck Cum Sex
Fibours
Cartilaginous
Synovial
Fibrous
- immovable
Bones are connected by fibrous movement and don’t allow movement. Provide protection for the brain. Eg, skull
Cartilaginous
- Slightly moveable
Bones are connected by cartilage and allow a little bit of movement.
Synovial joints
freely movable joints
- Most common joints and allow for maximum movement.
- Synovial fluid absorbs shock + reduces friction, found in the joint capsule
- Ligaments hold the bone together and prevent dislocation
- Cartilage prevents bones from rubbing together
What are the types of synovial joints?
Ball and socket
Hinge
Pivot
Saddle
Gliding
Condyloid
Synovial fluid
fluid in the joint capsule that absorbs shock and reduces friction.
Ligaments
holds bone to bone to prevent dislocation and stability to the joint
Synovial membrane
the lining around the outside that encloses the synovial fluid
Cartilage
a slightly hard, rubbery substance that prevents the bones from rubbing together.
Tendons
straps that surround joints, attaching muscles to bones.
Ball-and-socket joint
Movements include flexion, extension, circumduction, abduction. E.g. hip and shoulder joint.
Hinge joint
Movements include flexion and extension. E.g. elbow, knee, fingers and toes.