GCSE PE - Muscular System Flashcards
What is a tendon?
A fibrous tissue that attaches a muscle to bone
What is an agonist?
A muscle responsible for creating movement at a joint
What is an antagonist?
A muscle that opposes the agonist providing resistance for coordinated movement
What is a fixator
A muscle that stabilises one part of a body while another moves
What term is used to describe a pair of muscles that work together?
Antagonistic pair
What is an isotonic muscle contraction?
A muscle contraction where the muscle changes length during its contraction
Name the two types of isotonic muscle contraction
Concentric
Eccentric
What is a concentric muscle contraction?
When a muscle shortens producing tension
This produces the force to pull two bones closer together causing joint movement
What is an eccentric muscle contraction?
When a muscle lengthens producing tension
This resists forces such as gravity to control joint movement
What is an isometric muscle contraction?
When a muscle contracts but does not change length
Posture is maintained by muscles isometrically contracting
What does DOMS stand for?
Delayed Onset Muscle Soreness
What is DOMS?
Pain and stiffness felt in the muscle which peaks 24-72 hours after exercise, associates with eccentric muscle contractions
Where can you find the tibialis anterior
What movement does it produce?
In the front of the shin
It dorsiflexes your foot
Where can you find the gastrocnemius?
What movement does it produce?
In the back of the lower leg (calf)
It plantarflexes the foot
What movements do the hamstrings produce?
Flexion of the knee
What movements do the quadriceps produce?
Extension of the knee
Where can you find the gluteus maximus?
In the bum
What movement does the gluteus maximum produce?
Extension of the hip
Where can you find the adductor muscles?
On the inside of the upper leg
From the pelvis to the femur
What movement do the adductor muscles produce?
Adduction of the hip
Where can you find the deltoid muscle?
In the shoulder?
What movement does the deltoid produce?
Abduction of the shoulder
Where is the latissimus dorsi?
Side of the back
What movement does the latissimus dorsi produce?
Adduction of the arm
Where can you find the pectoral muscles?
In the chest
Which muscle dorsiflexes the ankle?
Tibialis anterior
Which muscle plantarflexes the ankle?
Gastrocnemius
Which muscles flex the knee?
Hamstrings