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Muscles of the Upper and Lower Limbs

Muscles of the Upper and Lower Limbs. Scapula. Deltoid. Scapula. Deltoid. Biceps Brachii : Prime mover for flexing the arm. Scapula. Deltoid. Biceps Brachii : Prime mover for flexing the arm. Triceps brachii : Prime mover for arm extension. Antagonist of biceps brachii .

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Muscles of the Upper and Lower Limbs

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  1. Muscles of the Upper and Lower Limbs

  2. Scapula Deltoid

  3. Scapula Deltoid Biceps Brachii: Prime mover for flexing the arm

  4. Scapula Deltoid • Biceps Brachii: • Prime mover for flexing the arm. • Triceps brachii: • Prime mover for arm extension. • Antagonist of biceps brachii. • Boxer’s muscle, delivers a straight knockout punch.

  5. Scapula Deltoid • Biceps Brachii: • Prime mover for flexing the arm. • Triceps brachii: • Prime mover for arm extension. • Antagonist of biceps brachii. • Boxer’s muscle, delivers a straight knockout punch. • Brachialis: • Deep to the biceps. • Elbow flexion

  6. Scapula Deltoid • Biceps Brachii: • Prime mover for flexing the arm. • Triceps brachii: • Prime mover for arm extension. • Antagonist of biceps brachii. • Boxer’s muscle, delivers a straight knockout punch. • Brachialis: • Deep to the biceps. • Elbow flexion • Brachioradialis: • Fairly weak muscle. • Forearm flexion.

  7. Scapula Deltoid • Biceps Brachii: • Prime mover for flexing the arm. • Triceps brachii: • Prime mover for arm extension. • Antagonist of biceps brachii. • Boxer’s muscle, delivers a straight knockout punch. • Brachialis: • Deep to the biceps. • Elbow flexion • Brachioradialis: • Fairly weak muscle. • Forearm flexion. Anterior arm muscles used for flexion, in order of decreasing strength:

  8. Scapula Deltoid • Biceps Brachii: • Prime mover for flexing the arm. • Triceps brachii: • Prime mover for arm extension. • Antagonist of biceps brachii. • Boxer’s muscle, delivers a straight knockout punch. • Brachialis: • Deep to the biceps. • Elbow flexion • Brachioradialis: • Fairly weak muscle. • Forearm flexion. Anterior arm muscles used for flexion, in order of decreasing strength: Biceps brachii

  9. Scapula Deltoid • Biceps Brachii: • Prime mover for flexing the arm. • Triceps brachii: • Prime mover for arm extension. • Antagonist of biceps brachii. • Boxer’s muscle, delivers a straight knockout punch. • Brachialis: • Deep to the biceps. • Elbow flexion • Brachioradialis: • Fairly weak muscle. • Forearm flexion. Anterior arm muscles used for flexion, in order of decreasing strength: Biceps brachii brachialis

  10. Scapula Deltoid • Biceps Brachii: • Prime mover for flexing the arm. • Triceps brachii: • Prime mover for arm extension. • Antagonist of biceps brachii. • Boxer’s muscle, delivers a straight knockout punch. • Brachialis: • Deep to the biceps. • Elbow flexion • Brachioradialis: • Fairly weak muscle. • Forearm flexion. Anterior arm muscles used for flexion, in order of decreasing strength: Biceps brachii Brachialis brachioradialis

  11. Muscles that move the knee 1.) Hamstrings: Mass of muscles, flexes the knee 2.) Sartorius: Weak thigh flexor Rectus Femoris VastusMedialis 3.) Quadriceps: 4 muscles on the anterior thigh that extend the knee VastusLateralis VastusIntermedialis (under R. Femoris)

  12. Muscles moving the hip • Gluteus Medius: • Beneath the Gluteus Maximus • Hip abductor • Steadies the pelvis • Site for intramuscular injections • Gluteus Maximus: • Superficial muscle of the hip • Powerful hip extensor • Important for climbing stairs and jumping

  13. Muscles that move the ankles and feet Tibialis anterior: Allows you to invert the foot (turn foot medial side up) Gastrocnemius: 2 bellied muscle. Allows you to point your foot and push off the ball of the foot. Running, dancing muscle. Fibularis: 3 muscles of the anterior calf that allow you to evert the foot (turns sole laterally) Soleus: Deep to gastrocnemius. Strong muscles for flexion of heel (pointing of toes)

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