Back/Thorax Muscles: Nerves and Blood Vessels

Question 1

Deltoid m.

Answer 1

1. Axillary n.
2. Posterior circumflex humoral a., deltoid branch of thoraco-acromial a.

Question 2

Infraspinatus m.

Answer 2

1. Suprascapular n. 2. Suprascapular a.

Question 3

Latissimus dorsi m.

Answer 3

1. Thoracodorsal n. 2. Thoracodorsal a. (and others)

Question 4

Serratus anterior m.

Answer 4

1. Long thoracic n. 2. Lateral thoracic a.

Question 5

Subscapularis m.

Answer 5

1. Upper/lower sub scapular n. 2. Subscapular a., lateral thoracic a.

Question 6

Supraspinatus m.

Answer 6

1. Suprascapular n. 2. Suprascapular a. (both same as infraspinatus m.)

Question 7

Teres Major m.

Answer 7

1. Lower subscapular n. 2. Circumflex scapular a.

Question 8

Teres Minor m.

Answer 8

1. Axillary n. 2. Circumflex scapular a. (same as Teres major m.)

Question 9

Levator scapulae m.

Answer 9

1. Dorsal scapular n. 2. Dorsal scapular a. (and transverse cervical a) BOTH same as rhomboids!

Question 10

Rhomboid major m.

Answer 10

1. Dorsal scapular n. 2. Dorsal scapular a. (and transverse cervical a.) BOTH same as levator scapulae!

Question 11

Rhomboid minor m.

Answer 11

1. Dorsal scapular n. 2. Dorsal scapular a. (and transverse cervical a.) BOTH same as levator scapulae!

Question 12

Trapezius m.

Answer 12

1. Accessory nerve (CN XI) 2. Transverse cervical a. (and transverse cervical a.)

Question 13

What 3 back muscles are innervated by the dorsal scapular nerve?

Answer 13

1. Levator scapulae m. 2. Rhomboid major m. 3. Rhomboid minor m.

Question 14

What two shoulder muscles are innervated by the lower sub scapular nerve?

Answer 14

1. Subscapularis m. (by BOTH upper and lower ss nerves) 2. Teres major m.

Question 15

What two shoulder muscles are innervated by the supra scapular n.?

Answer 15

1. Infraspinatus m. 2. Supraspinatus m.

Question 16

What two shoulder muscles receive blood from the supra scapular a.?

Answer 16

1. Infraspinatus m. 2. Supraspinatus m. (note: these both also receive innervation from the supra scapular n.)

Question 17

What two shoulder muscles receive blood from the CIRCUMFLEX scapular artery?

Answer 17

1. Teres major m. 2. Teres minor m.

Question 18

What three back muscles receive blood from the DORSAL scapular artery?

Answer 18

1. Levator scapulae m. 2. Rhomboid major m. 3. Rhomboid minor m.

Question 19

What four back muscles receive blood from the transverse cervical artery?

Answer 19

1. Levator scapulae m. 2. Rhomboid major m. 3. Rhomboid minor m. 4. Trapezius m.

Question 20

Pectoralis major m.

Answer 20

1. Medial AND lateral pectoral n. 2. Pectoral branch of thoraco-acromial a., and perforating branch of internal thoracic a.

Question 21

Pectoralis minor m.

Answer 21

1. Medial pectoral n. ONLY 2. Same as pec. major

Question 22

Serratus posterior inferior m.

Answer 22

1. Ventral rami of lower T nerves 2. Posterior intercostal arteries

Question 23

Serratus posterior superior m.

Answer 23

Same as serratus posterior inferior m.!

Question 24

Erector spinae m.

Answer 24

1. DORSAL rami of each region 2. (Lots, look it up)

Question 25

Splenius capitis m.

Answer 25

1. Dorsal rami of cervical nerves 2. Descending branch of occipital a.

Question 26

Semispinalis capitis m.

Answer 26

1. Dorsal rami of cervical nerves 2. Descending branch of occipital a. (both like Splenius capitis m.)

Question 27

Obliquus capitis inferior m.

Answer 27

1. Suboccipital n. 2. Vertebral a., descending branch of occipital a.

Question 28

Obliquus capitis superior m.

Answer 28

1. Suboccipital n. 2. Vertebral a., descending branch of occipital a.

Question 29

Rectus capitis posterior major m.

Answer 29

1. Suboccipital n. 2. Vertebral a., descending branch of occipital a.

Question 30

Rectus capitis posterior minor m.

Answer 30

1. Suboccipital n. 2. Vertebral a., descending branch of occipital a.