Test 1: Muscles

Question 1

Answer 1

Pectoralis Major

• Directly Moves the shoulder
• Shoulder Flexion (arm forward and up)
• Shoulder Abduction (arm to the side and up)
• Horizontal flexion (arm across the front of body)
• Internal Rotation (hand to belly with elbow bent

Question 2

Answer 2

Biceps Brachii

• Moves the elbow and forearm
• Elbow Flexion with palm up “bicep curl” (arm forward and up)
• Supination (turns forearm palm up)

Question 3

Answer 3

Triceps Brachii

• Moves elbows
  
  • Elbow Extension(straightening the elbow)

Question 4

Answer 4

Deltoids

• Moves shoulders in many directions
  
  • Shoulder Flexion (arm forward and up
  • Shoulder Abduction (arm to the side and up)
  • Horizontal Movements (arm across the front of body and away to the outside)

Question 5

Answer 5

Gluteus Maximus

• Directly moves hips
  
  • Hip Extension(move leg back behind body)
  • Hip External Rotation (twist leg out so toes point out)

Question 6

Answer 6

Quadriceps Femoris

• Moves knees and hips
  
  • Knee Extension (straightens knee)
  • Hip Flexion (raises thigh from ground)

Question 7

Answer 7

Hamstrings

• Moves knees and hips
• Antagonistic to QUADRICEPS FEMORIS

Question 8

Answer 8

Gastrocnemius

• Moves foot
  
  • Ankle Plantar Flexion

( points toes- up on tippy toes)

Question 9

Answer 9

Tibialis Anterior

• Moves foot
  
  • Ankle Dorsi-flexion (moves toes up off the ground while heel remains on ground)
  • Inversion of the foot (turns foot in so the sole of foot faces inwards)

Question 10

Answer 10

Sternocleidomastoid

• Moves head
  
  • Flexion of Head (nods head forward)
  • Side Flexion of Head (bends head to the same side- ear to shoulder)
  • Turns head Away (turns head away from the side that is active)

Question 11

Answer 11

Trapezius

• Moves shoulders, shuolder blades, and head
  
  • Shoulder Elevation (shoulder shrug)

Question 12

Answer 12

Masseter

• Moves jaws up to close the mouth

Question 13

Answer 13

Rectus Abdominus

• Supports abdominal organs
• “sit-up muscle”

Question 14

Answer 14

Quadratus Lumborum

• Maintains upright posture
• Causes lateral flexion of backbone

Question 15

Answer 15

Erector Spinae

• Stabilizes the spine – returns spine to upright pos. after bending
• Causes spine to extend
• A bundle of muscles running vertically along the spine