Antagonistic Muscle Pairs Flashcards
What are antagonistic muscle pairs?
Muscle pairs that work against each other to create movement.
Which muscle is responsible for flexion at the elbow?
Biceps brachii.
What is the role of the triceps brachii in elbow movement?
It acts as the antagonist to the biceps brachii during extension.
True or False: Antagonistic muscles can work simultaneously.
True.
Fill in the blank: The __________ muscle assists in stabilizing a joint during movement.
synergist.
What is a fixator muscle?
A muscle that stabilizes the origin of the prime mover.
Which muscle pair is involved in knee flexion?
Hamstrings (antagonist) and quadriceps (agonist).
What is the primary function of antagonistic muscle pairs?
To allow smooth and controlled movement.
True or False: Synergist muscles assist the agonist in performing a movement.
True.
What is an example of an antagonistic muscle pair in the leg?
Gastrocnemius (agonist) and tibialis anterior (antagonist).
What action do the pectoralis major and latissimus dorsi perform?
They are antagonistic muscles involved in shoulder movement.
Fill in the blank: The __________ muscle opposes the action of the agonist.
antagonist.
What role do fixator muscles play during a bicep curl?
They stabilize the shoulder joint.
Which muscle group acts as fixators when performing a squat?
Core muscles.
What is the definition of a synergist muscle?
A muscle that helps the agonist by adding extra force or reducing undesirable movements.
True or False: Antagonists cannot relax while the agonist contracts.
False.
Which muscles are antagonistic during wrist flexion?
Flexor carpi radialis (agonist) and extensor carpi radialis (antagonist).
What happens to antagonistic muscles during a contraction?
One muscle contracts while the other relaxes.
Fill in the blank: __________ muscles provide stability to the joint.
Fixator.
What is the effect of synergist muscles on movement efficiency?
They enhance the efficiency and effectiveness of the movement.
What is a common example of synergist muscles in the arm?
Brachialis and brachioradialis when performing elbow flexion.
True or False: All muscles work in antagonistic pairs.
False.
What is the relationship between agonist and antagonist muscles?
They work in opposition to control movement.
What is the primary role of the quadriceps during knee extension?
They act as the agonist.
Which muscle group serves as antagonists during hip extension?
Hip flexors.
What are the agonist
The muscle that contracts and is primarily responsible for movement
What is the role of antagonist
the muscle that relaxes this muscle is for the opposite movement to the antagonist
Synergist
synergist muscle assists an agonist (a prime mover muscle) during an activity. It can produce force to support the movement and promote stability. Synergist muscles help make movement more fluid, increase power and strength output, and reduce instability
Fixator
