LO2 muscles Flashcards
What are the muscles involved in the radio-ulnar movement?
Pronator Teres, Supinator
These muscles are responsible for pronation and supination of the forearm
List the muscles of the elbow
Biceps Brachii, Triceps Brachii
These muscles are responsible for flexion and extension at the elbow
What are the main shoulder muscles?
Anterior Deltoid, Medial Deltoid, Posterior Deltoid, Latissimus Dorsi, Pectoralis Major, Teres Major, Trapezius
These muscles play crucial roles in shoulder movement
Identify the muscles of the rotator cuff
Supraspinatus, Subscapularis, Teres Minor, Infraspinatus
These muscles stabilize the shoulder joint
Which muscles make up the vertebral column?
Rectus Abdominus, External Oblique, Internal Oblique, Erector Spinae group
These muscles support the spine and assist in trunk movement
What are the hip muscles?
Iliopsoas, Gluteus Maximus, Gluteus Medius, Gluteus Minimus, Adductor Longus, Adductor Brevis, Adductor Magnus
These muscles are involved in hip movement and stability
List the knee muscles
Biceps Femoris, Semimembranosus, Semitendinosus, Rectus Femoris, Vastus Lateralis, Vastus Intermedius, Vastus Medialis
These muscles are responsible for flexion and extension at the knee
Name the ankle muscles
Tibialis Anterior, Soleus, Gastrocnemius
These muscles control movement of the ankle
True or False: Rectus Abdominus is commonly referred to as the abdominals.
False
Rectus Abdominus is a specific muscle, not a term for the entire abdominal region
What defines the iliopsoas muscle?
Psoas major and Iliacus at their inferior ends
Important for hip flexion
What is the role of a tendon?
Attaches muscle to bone
Tendons are critical for transmitting force from muscle to bone
Define agonist in muscle action.
Muscle responsible for creating movement at a joint
Also known as the prime mover
Define antagonist in muscle action.
Muscle that opposes the agonist providing resistance for coordinated movement
Works in opposition to the agonist
What is a fixator?
Muscles that stabilize one part of the body while another causes movement
Essential for coordinated muscle actions
What is isotonic contraction?
Muscular contraction resulting in movement where muscle length changes
Includes concentric and eccentric contractions
What is isometric contraction?
Muscular contraction where the muscles involved do not change length
Important for maintaining posture and stability
What is concentric contraction?
Where the muscle increases tension as it shortens
Generates force during muscle shortening
What is eccentric contraction?
Where the muscle lengthens under tension
Often acts as a brake against gravity
Fill in the blank: Concentric and eccentric are both a type of _______.
isotonic contraction
Both involve changes in muscle length
When is eccentric contraction usually occurring?
On the downward phase of a movement
The agonist remains the same during this phase
What is the task for identifying muscle actions?
Name the agonist and antagonist and the type of contraction for specific movements
Example movements include bicep curl and squat
