Musculoskeletal System Flashcards
What are the 6 functions of the skeleton?
- Support
- Protection
- Movement
- Structure/ Shape
- Mineral Storage
- Blood Cell Production
What is the purpose of ligaments?
Attaches bone to bone
What is the purpose of tendons?
Attaches bone to muscle
What is a joint?
A point where two or more bones meet
What are the 4 types of bone? Include an example for each
- Short bones - Carpals (in the hand)
- Long bones - Femur
- Flat bones - Cranium
- Irregular bones - Vertebrae
Role of long bones? 2 sporting examples linking to the name of the bones.
Used in gross movements
- Kicking the ball in Football - Femur
- Shoulder pass in Netball - Humerus
Role of short bones? A sporting example linking to the name of the bone.
Used in fine movements & to support the weight of the body.
- A gymnast performing a handstand - carpals/ tarsals in the hand and wrist to keep the gymnast balanced.
Role of flat bones? Include a sporting example linking to name of the bone/s.
Protection of vital organs
Provides a broad surface for muscle attachment
Example: The cranium protecting the brain when hearing a football
What are irregular bones? What are they used for?
They are specifically shaped to perform particular functions
- Protection
- Muscle attachment
Examples: Patella and Vertebrae
What happens when a muscle contracts?
It shortens
What happens when a muscle relaxes?
It lengthens
Name the 4 major muscles (groups) in the leg
- Quadricep (group)
- Hamstring (group)
- Gastrocnemius
- Tibialis Anterior
How are muscles attached to bones?
Tendons
The tendon at the non-moving end is called the … ?
Origin
The tendon at the moving end is called the … ?
Insertion
Name the 2 types of muscle contraction
- Isotonic
2. Isometric
Define an Isotonic contraction
Muscles changing length during a contraction
What are the 2 types of Isotonic contraction? Define them.
Eccentric - When the muscle lengthens
Concentric - When the muscle shortens
Define an Isometric contraction
Muscles staying the same length
Sporting example of an Isometric contraction
Plank
Handstand
Sporting example of an Isotonic contraction (include movement at the joint)
Upward phase of a bicep curl - flexion at the elbow Concentric contraction - bicep is the agonist - tricep is the antagonist
Name the 3 types of joints and include an example of each
- Freely moveable (synovial) - Knee
- Slightly moveable - Ribs
- Fixed - Cranium