Muscular System Flashcards
Flexion at the Shoulder (Muscles)
Anterior Deltoid
Extension at the Shoulder (Muscles)
Posterior Deltoid
Abduction at the Shoulder (Muscles)
Deltoid
Horizontal Flexion at the Shoulder (Muscles)
Pectoralis Major
Medial Rotation at the Shoulder (Muscles)
Trapezius
Lateral Rotation at the Shoulder (Muscles)
Teres Major
Flexion at the Elbow (Muscles)
Biceps Brachii
Extension at the Elbow (Muscles)
Triceps Brachii
Pronation at the Radioulnar Joint (Muscles)
Pronator Teres
Supination at the Radioulnar Joint (Muscles)
Supinator Muscle
Flexion at the Wrist (Muscles)
Wrist Flexors
Extension at the Wrist (Muscles)
Wrist Extensors
Flexion at the Vertebrae (Muscles)
Rectus Abdominus
Extension at the Vertebrae (Muscles)
Erector Spinae
Lateral Flexion at the Vertebrae (Muscles)
Internal+External Obliques
Flexion at the Hip (Muscles)
Iliopsas
Extension/Abduction at the Hip (Muscles)
Gluteus Maximus,Medius and Minimus
Adduction at the Hip (Muscles)
Adductor Longus, Brevis and Magnus
Flexion at the Knee (Muscles)
Bicep Femoris, Semitendinosus and Semimebranosus
Extension at the Knee (Muscles)
Rectus Femoris and Vastus Medialis, Lateralis and Intermedius
Dorsiflexion at the Ankle (Muscles)
Tibialis Anterior
Plantarflexion at the Ankle (Muscles)
Gastrocnemius and Soleus
Agonist (Definition)
The Muscle/s responsible for a movement
Antagonist (Definition)
The Muscle/s that relax in response to the active muscle
Fixator (Definition)
The Muscle/s that help stabilise a joint during a movement
Hypertrophy (Definition, Muscle)
An increase in the size of a muscle
Hyperplasia (Definition, Muscle)
The splitting of muscle fibres to increase their number
Contraction Time (Definition, Muscle)
The speed at which the muscle fibres types contract
Motor Neuron (Definition, Muscle)
The Number of muscle fibres attached to a single nerve
Resistance to Fatigue (Definition, Muscle)
How quickly the muscle fibres get tired
Force Production (Definition, Muscle)
How hard the muscle fibres contract
Mitochondria (Definition, Muscle)
Provide energy to the muscle fibres using oxygen
Capillary Density (Definition, Muscle)
Higher Capillary Density provides more oxygen to the muscle fibres
Oxidative Capacity (Definition, Muscle)
The Muscles’ capacity to use oxygen when working
Glycolytic Capacity (Definition, Muscle)
The body’s capacity to use glycogen when working
Major Fuel (Definition, Muscle)
The fuel source the muscle fibre prefers to use
What are the names/type of the three muscle fibres?
Slow twitch fibres (type i)
Fast oxidative glycolytic fibres
(type iia)
Fast twitch glycolytic fibres (type iib)
What are the abbreviations for the muscle fibres
Type i- SO
Type iia- FOG
Type iib- FG
Contraction time (muscle fibres)
i- slow
iia- fast
iib- very fast
Size of motor neurons (muscle fibres)
i- small
iia- large
iib- very large
Resistance to fatigue (muscle fibres)
i- high
iia- intermediate
iib- low
Activity used predominantly in (muscle fibres)
i- Long duration Aerobic
iia- Moderate duration Aerobic
iib- Short duration anaerobic
Force production (muscle fibres)
i- low
iia- high
iib- very high
Mitochondrial Density (muscle fibres)
i- high
iia- high
iib- low
Capillary density (muscle fibres)
i- high
iia- intermediate
iib- low
Oxidative capacity (muscle fibres)
i- high
iia- high
iib- low
Glycolytic capacity (muscle fibres)
i- low
iia- high
iib- high
Major storage fuel (muscle fibres
i- Triglycerides
iia- CP, glycogen
iib- CP, glycogen
Positive Short-term impacts of physical activity (3) (muscular system)
- increased blood flow
- increase in muscle temperature
- increase alertness
Negative short-term effects of physical activity (3) (muscular system)
- increased chance of muscle soreness
- can be left fatigued
- depleted energy and myoglobin stores
Importance of a warm up (2) (muscular system)
- increase in blood flow improves oxygen, glycogen and triglyceride levels
- muscle warm ups and stretching reduces the risk of injury in muscles
Importance of a cool down (2) (muscular system)
- provides an opportunity to replenish glycogen and cp levels
- refreshes levels of oxygen in the myoglobin and gets rid of lactic acid
Positive long-term effect of physical activity (4) (muscular system)
- increased muscle fibre thickness
- increased number of muscle fibres
- increased fuel sources (CP, glycogen and triglycerides)
- muscle hypertrophy
Negative long-term effects of physical activity (2) (muscular system)
- repeated activity with little rest can cause overuse injuries in the muses
- possible injuries due to inflammation
Isometric Contraction Definition
Muscle contraction were the muscle is neither shortening or lengthening, but still under tension
Concentric Contraction Definition
Muscle contraction were the muscle shortens under tension
Eccentric contraction definition
Muscle contraction were the muscle lengthens under tension