Thorax

Question 1

pectoralis major innervation

Answer 1

lateral and medial pectoral nerves

Question 2

pectoralis major blood supply

Answer 2

pectoral branch of thoraco-acromial artery

Question 3

pectoralis major action

Answer 3

adduction, medially rotates arm

Question 4

pectoralis major origin

Answer 4

from clavicle, sternum, costal cartilages

Question 5

pectoralis minor origin

Answer 5

ribs

Question 6

pectoralis minor innervation

Answer 6

medial pectoral nerve

Question 7

pectoralis minor blood supply

Answer 7

thoraco-acromial artery and lateral thoracic artery

Question 8

subclavius origin

Answer 8

first rib

Question 9

subclavian innervation

Answer 9

the nerve to subclavius

Question 10

subclavius action

Answer 10

anchors and depresses clavicle

Question 11

serratus anterior origin

Answer 11

lateral portion of upper ribs

Question 12

serratus anterior innervation

Answer 12

long thoracic nerve

Question 13

serratus anterior blood supply

Answer 13

lateral thoracic artery

Question 14

serratus anterior action

Answer 14

protraction and rotation of scapula superiorly

Question 15

muscles innervated by intercostal nerves

Answer 15

external intercostals, internal intercostals, innermost intercostals, transversus thoracis

Question 16

pleural cavities

Answer 16

on either side of mediastinum; contain lungs and their lining membranes

Question 17

pleural cavity

Answer 17

space between visceral and parietal pleura

Question 18

impressions on left lung

Answer 18

groove for arch of aorta and groove for descending aorta

Question 19

impressions on right lung

Answer 19

groove for brachiocephalic vein, groove for superior vena cava, groove for azygos vein

Question 20

arterial supply of lungs and pleura

Answer 20

derives from bronchial aa, which are small branches of aorta

Question 21

pulmonary plexus nerve supply

Answer 21

sympathetic and parasympathetic

Question 22

sympathetic pulmonary plexus

Answer 22

secreto-inhibitor, bronchodilator, vasoconstrictor

Question 23

parasympathetic pulmonary plexus

Answer 23

bronchoconstrictor, vasodilator, secreto-stimulant

Question 24

parietal pleura nerve supply

Answer 24

receives sensory information from phrenic and intercostal nerves (very sensitive to local inflammation)

Question 25

pleural effusion

Answer 25

excess fluid in pleural cavity

Question 26

thoracentesis

Answer 26

needle used to aspirate pleural fluid from the costodiaphragmatic recess

Question 27

internal thoracic artery is _

Answer 27

a branch of the subclavian artery