Appendicular Musculature (Ch. 11)

Question 1

Appendicular muscles are responsible for..

Answer 1

• Stabilizing – pectoral/pelvic girdles
• Moving – upper and lower limbs
• Absorbing – shocks + jolts
• Aiding in strengthening joint areas

Question 2

Major Characteristics of the Appendicular Skeleton

Answer 2

1. Moves a limb segment
   - specific place @ a specific joint
   - innervated by spinal nerves (plexuses)
   
   • except: trapezius (XI)
2. Organized into compartments (flexor vs extensor)

Question 3

Upper/Lower Limb musculature sacrifices

Answer 3

Upper limb: sacrifice stability for mobility
Lower limb: sacrifice mobility for stability

Question 4

Posterior side of the Pectoral Girdle

Answer 4

Trapezius, Rhomboid, Levator Scapulae, Serratus anterior

Question 5

Muscles Moving Arm at the Shoulder Joint (Anterior)

Answer 5

Deltoid, Pectoralis major, Subscapularis

Question 6

Muscles Moving Arm at the Shoulder Joint (Posterior)

Answer 6

Latissimus dorsi, Teres major, Supraspinatus, Infraspinatus, Teres minor

Question 7

Rotator Cuff Muscle Group

Answer 7

“SITS”:
Supraspinatus, Infraspinatus, Teres Minor, Subscapularis

Question 8

Muscles Moving the Forearm

Answer 8

Anterior: Flex
Biceps Brachii, Brachialis, Brachioradialis

Posterior: Extend
Triceps Brachii

Question 9

Muscles that Move the Wrist

Answer 9

Anterior (Superficial):
Flexor carpi radialis, palmaris longus, flexor carpi ulnaris
(Flexor retinaculum - not a muscle)
Posterior (Superficial):
Extensor carpi ulnaris, extensor carpi radialis

Question 10

Gluteal Group

Answer 10

Gluteus Maximus, Medius, Minimus

Question 11

Iliopsoas Group

Answer 11

Iliacus, Psoas Major

Question 12

Adductor Group

Answer 12

Adductor brevis, longus, magnus, Pectineus, Gracilis

Question 13

Muscles that Move the Leg (Anterior)

Answer 13

Quadriceps femoris: Vastus intermediate, lateralis, medialis, Rectus femoris
Satorius

Question 14

Muscles that Move the Leg (Posterior)

Answer 14

Biceps femoris, Semimembranosus, Semitendinosus

Question 15

Muscles that Move the Ankle (Anterior)

Answer 15

Tibialis anterior, Fibularis longus/brevis, Extensor digitorum longus, Extensor hallucis, longus

Question 16

Muscles that Move the Ankle (Posterior)

Answer 16

Gastrocnemius, Soleus, (calcaneal tendon)

Question 17

Trapezium

Answer 17

Posterior Pectoral Girdle
- shrug, retract, depress, rotates, extends neck - depending on orientation of fibers

Question 18

Rhomboid

Answer 18

Posterior Pectoral Girdle
- retract scapula

Question 19

Levator Scapulae

Answer 19

Posterior Pectoral Girdle
- elevates scapula

Question 20

Serratus Anterior

Answer 20

Posterior Pectoral Girdle
- Major protractor of the scapula

Question 21

Deltoid

Answer 21

Anterior Shoulder
- Major abductor of the arm, medial rotation

Question 22

Pectoralis Major

Answer 22

Anterior Shoulder
Adducts, flexes, and medially rotates the arm

Question 23

Subscapularis

Answer 23

Anterior Shoulder
Medial rotation of the arm

Question 24

Latissimus Dorsi

Answer 24

Posterior Shoulder
- Extension, adduction, medial rotation at shoulder

Question 25

Teres Major

Answer 25

Posterior Shoulder
- Extension and medial rotation of the shoulder

Question 26

Supraspinatus

Answer 26

Posterior Shoulder
Adduction at the shoulder

Question 27

Infraspinatus

Answer 27

Posterior Shoulder
Lateral rotation at the shoulder

Question 28

Teres Minor

Answer 28

Posterior Shoulder
- Lateral rotation and adduction at the shoulder

Question 29

Biceps Brachii

Answer 29

Anterior Upper arm
Flexion at the elbow, supinates the arm

Question 30

Brachialis

Answer 30

Anterior Upper arm
- Flexion at the elbow

Question 31

Brachioradialis

Answer 31

Anterior Upper arm
- flexion at the elbow

Question 32

Triceps Brachii

Answer 32

Posterior Upper arm
- extension at the elbow

Question 33

Flexor carpi radialis

Answer 33

Anterior Wrist
- flexion and adduction at the wrist

Question 34

Flexor carpi ulnaris

Answer 34

Anterior Wrist
- flexion and adduction at the wrist

Question 35

Palmaris longus

Answer 35

Anterior Wrist
- flexion at the wrist (absent in ~15-20%)

Question 36

Flexor Retinaculum

Answer 36

Anterior Wrist
- Not a muscle
- Lies over carpal bones forming roof of carpal tunnel; flexor tendons attach or pass through retinaculum

Question 37

Extensor carpi ulnaris

Answer 37

Posterior Wrist
- extension and adduction at the wrist

Question 38

Extensor carpi radialis

Answer 38

Posterior Wrist
- extension and adduction at the wrist
- longus/brevis