Soc14 Muscular System Flashcards
Gluteals
Location:In the middle of the body at the back forming at the bottom
Function:Adduct and Extend the legs at hips,pull the legs backwards
Hamstrings
Location:At the top of each leg at the back
Function:Flex the legs at the knees
Gastrocnemius
Location:At the bottom of each leg at the back,also known as calf muscles
Function:point the toes (Plantar-Flexion) at the ankle
Latissimus Dorsi
Location:At the back of body either side of chest
Function:Pull your arms down at the shoulders behind your back (Adduct and Extend)
Tricep
Location:At the top of each arm at the back
Function: Extend arm into elbow
Deltoids
Location:In the upper part of body covering the shoulders
Function:Raise the arms in all directions at the shoulders
Bicep
Location:At the top of each arm at the front
Function:Flex the arms at elbows
Quadriceps
Location:At the top of each leg at the front
Function:Extend leg at knee
Pectoralis Major
Location:In the upper part of the chest at the front
Function:Adduct the arm at the shoulder
External Obliques
Location:To the side of abdomen
Function:Pull chest downwards flex and rotate the spinal column
Tibialis Anterior
Location:Runs down shin
Function:Pull the toes up toward the shin (Dorsi-Flexion)
Hip Flexors
Location:Sit deep in the front of the hip and connect the legs
Function:Flex the hip help the leg and knee up towards the body
What is an Antagonistic Pair
Where two muscles that work together to create a movement
This happens when a muscle contracts and pulls a bone it can produce a movement in one direction however muscles cannot push
When one muscles contacts its called the AGONIST
The other relaxing is called ANTAGONIST
4 Antagonistic Muscle Pairs
Bicep/Tricep
Hamstring/Quadricep
Gastrocnemius/Tibialis Anterior
Gluteals/Hip Flexors
Type I Slow Twitch Muscle Fibres
-Suit endurance activities - can work for long periods of time.
- They’re darker in colour because they contain Myoglobin, a red pigment that transports oxygen to the working muscles.