practical 1 second order

Question 1

trapezius muscle

Answer 1

-elevate and superiorly rotate scapula; depress scapula
-medial attachment: occipital bone
-lateral attachment: clavicle
-innervation: accessory nerve

Question 2

latissimus dorsi muscle

Answer 2

-agonist of arm extension; adducts arm and medially rotates arm
-proximal attachment: thoracic vertebrae; iliac crest
-distal attachment: humerus
-innervation: thoracodorsal nerve

Question 3

rhomboid major muscle

Answer 3

-elevate and retract scapula; inferiorly rotate scapula
-medial attachment: thoracic vertebrae
-lateral attachment: scapula
-innervation: dorsal scapular nerve

Question 4

teres minor muscle

Answer 4

-adducts and laterally rotates arm
-proximal attachment: scapula
-distal attachment: humerus
-innervation: axillary nerve

Question 5

supraspinatus muscle

Answer 5

-abducts arm
-proximal attachment: scapula
-distal attachment: humerus
-innervation: suprascapular nerves

Question 6

subscapularis muscle

Answer 6

-medially rotates arm
-proximal attachment: scapula
-distal attachment: humerus
-innervation: upper and lower subscapular nerves

Question 7

splenius capitas muscle

Answer 7

-turns head to the same side (unilateral); extends head and neck (bilateral)
-superior attachment: occipital and temporal bone
-inferior attachment: ligamentum nuchae
-innervation: cervical spinal nerves

Question 8

gluteus maximus muscle

Answer 8

-extends thigh; laterally rotates thigh
-proximal attachment: iliac crest, sacrum, coccyx
-distal attachment: femur
-innervation: inferior gluteal nerve

Question 9

gluteus medius muscle

Answer 9

-abducts thigh; medially rotates thigh
-proximal attachment: posterior iliac crest
-distal attachment: femur
-innervation: superior gluteal nerve