Major Muscles: Kinesiology Final

we yeehaw thru it

Primary Function: Deltoid

shoulder abduction, flexion, extension

Primary Function: Pectoralis Major

shoulder adduction, shoulder flexion, internal rotation

Primary Function: Lattisimus Dorsi

shoulder extension, adduction, internal rotation

Primary Function: Trapezius

shoulder elevation, retraction, depression

Primary Function: Biceps Brachii

elbow flexion, forearm supination

Primary Function: Triceps Brachii

elbow extension, shoulder extension

Primary Function: Rectus Abdominis

Trunk flexion

Primary Function: External Oblique

Trunk rotation, lateral flexion

Primary Function: Gluteus Maximus

Hip extension, external rotation

Primary Function: Gluteus Medius

Hip abduction, internal rotation

Primary Function: Quadriceps

Knee extension, hip flexion

Primary Function: Hamstrings

Knee flexion, hip extension

Primary Function: Gastrocnemius

Plantar flexion of ankle

Primary Function: Soleus

Plantar flexion (posture)

Primary Function: Tibialis Anterior

Dorsiflexion of ankle

Primary Function: Erector Spinae

Spinal extension

Palpation: Deltoid

• Over the shoulder while abducting the arm

Palpation: Pectoralis Major

• Feel along the chest while pressing arms forward

Palpation: Latissimus Dorsi

• Palpate under the armpit toward the back during shoulder extension

Palpation: Trapezius

• Feel along upper fibers near neck during shoulder shrug

Palpation: Triceps

• Extend elbow against resistance

Palpation: Biceps

• Flex elbow and supinate forearm

Palpation: Rectus Abdominis

• Palpate during trunk flexion (sit up)

Palpation: External Oblique

• Palpate during trunk rotation

Palpation: Gluteus Maximus

• Palpate during hip extension

Palpation: Gluteus Medius

• Palpate lateral hip during abduction

Palpation: Quadriceps

• Palpate front thigh during knee extension

Palpation: Hamstrings

• Palpate back thigh during knee flexion

Palpation: Gastrocnemius

• Palpate calf during plantar flexion

Palpation: Soleus

• Palpate deeper calf during bent-knee plantar flexion

Palpation: Tibialis Anterior

• Palpate shin during dorsiflexion

Palpation: Erector Spinae

• Palpate along spine during trunk extension

Palpation: Rhomboids

• Palpate between scapulae during retraction

Palpation: Serratus Anterior

• Palpate along ribs during scapular protractions

Primary Function: Serratus Anterior

Protracts and stabilizes scapula against the thoracic wall

Primary Function: Rhomboids

Retracts and elevates scapula

Primary Function: Brachioradialis

Flexes elbow and assists in forearm supination

Palpation: Brachioradialis

• palpating its belly along the lateral aspect of the forearm during elbow flexion.

What type of muscle contraction occurs when the muscle lengthens under tension?

Eccentric

Antagonist muscle during bicep curl

Opposing muscle, tricep brachii

Agonist muscle during bicep curl

Prime mover, biceps brachii