Exam 2

Question 1

Shoulder

Answer 1

Includes pectoral, scapular and deltoid regions and lateral part of cervical region

Pectoral girdle: an incomplete bony ring formed by Scapulae, and clavicles

Question 2

Arm

Answer 2

Connects shoulder and elbow,

Consists of anterior and posterior compartments;

Question 3

Pectoral Fascia: attached to…

Answer 3

Clavicle and sternum

Question 4

Pectoral fascia invests pectoralis major m. Continuous inferriorly with anterior….

Answer 4

Abdominal wall fascia.
Also continuous with brachial fascia.
Leaves lateral border of pectoralis major m to become axillary fascia.

Question 5

Clavipectoral Fascia:

Answer 5

Deep to pectoral fascia and pectoralis major m.
Descends from clavicle
Encloses subclavius m. And pectoralis minor m
Continuous inferiority with axillary fascia
Costocoracoid membrane
Suspensory l of the axilla

Question 6

Anterior Axioappendicular muscles

Answer 6

Four anterior muscles that move pectoral girdle

Question 7

Pectoralis major

Answer 7

Has clavicle and sternocostal heads, eternal head is larger.
O: clavicular head-anterior surface of medial 1/2 of clavicle
Stern all head-anterior surface of sternum, superior 6 costal cartilages, aponeurosis of external oblique m.
I:Lateral lip IT groove of humerus.
A:ADD, MR of humerus, independently.
Clavicular head-flexes humerus.
Stern also head-extends from flexed position
N: Medial and lateral pectoral nn.
B: Pectoral branches of thoracoacromial trunk.

Question 8

Deltopectoral groove

Answer 8

Formed by pectoralis major and deltoid m.

Question 9

Clavipectoral triangle

Answer 9

Superior divergence of pectoralis major and deltoid mm.

Question 10

Pectoralis Minor

Answer 10

Lies on anterior wall of axilla
O: 3-5th ribs near costal regions
I: Medial border and superior surface coracoid process
A: Stabilizes scapula by drawing it anterior and inferior against thoracic wall;accessory m. Of inspiration
N: medial pectoral n
B: Pectoral branches from thoracoacromial trunk

Question 11

Subclavius

Answer 11

Inferior to clavicle
O: junction of 1st rib and its costal cartilage
I: Inferior surface, middle 1/3 of clavicle
A: anchors and depresses clavicle
N: Nervve to subclavius
B: Claviccular branches of thoracoacromial trunk

Question 12

Serratus Anterior

Answer 12

“Boxer’s muscle”
O: External surfaces of lateral parts of 1-8th ribs
I: Anterior surface of medial border of scapula
A: Scapular protection and upward rotation; fixes scapula against thoracic wall
N: long thoracic n.
B: Superior and lateral thoracic aa

Question 13

Vasculature of anterior axioappendicular muscles: Arteries….

Answer 13

Superior thoracic a. -from 1st part of axillary a. Supplies superior part of serratus anterior m.
Lateral thoracic a.-from 2nd part of axillary a. Descends along thoracic wall with long thoracic n. Supplies serratus anterior m.
THORACOACROMIAL TRUNK-from 2nd part of axillary a. Gives of clavicular, acromegaly, deltoid, and pectoral branches

Question 14

Vasculature of anterior axioappendicular muscles: Veins…

Answer 14

Cephalic V-formed on dorsum of hand, ascends in subcutaneous tissue, superior lay found in deltopecctoral groove, enters clavipectoral triangle
Drains into terminal part of axillary v.

Question 15

N. To subclavius

Answer 15

From superior trunk of brachial plexus. Supplies subclavius m.

Question 16

Long thoracic n.-

Answer 16

Long thoracic n.-From VPR of C5, C6, C7. Descend posterior to roots of brachial plexus. Runs on superficial surface of serratus anterior m and supplies it.

Question 17

Lateral pectoral n.

Answer 17

From lateral cord of brachial plexus, on deep surface of pectoralis major m. And supplies it.

Question 18

Medial pectoral m.

Answer 18

From medial cord of brachial plexus. Pierces pectoralis minor m. And enters deep surface of pectoralis major m. Supplies pectoralis minor m. And eternal head of pectoralis major m.

Question 19

Axilla

Answer 19

Pyramidal space between upper arm and thoracic wall.
-superior to axillary fascia at junction of arm and thorax
Provides a passageway for neurovascular structures to upper limb.-protected by addicted limb.
Apex
Base
Anterior wall
Posterior wall
Medial wall
Lateral wall

Question 20

Apex Of Axilla

Answer 20

Crevico-axillary canal. Bounded by 1st rib, clavicle and superior border of scapula.

Question 21

Base Of Axilla

Answer 21

Formed by concave skin, subcutaneous tissue and axillary fascia. Extends from arm to othoracic wall. Forms axillary fossa
Bounded by anterior and posterior axillary folds, thoracic wall and medial aspect of arm.

Question 22

Anterior. Wall Of Axilla

Answer 22

Formed by pectoralis major/minor mm. And deep Fascia.

Anterior axillary fold-inferiormost part of anterior wall that can be grasped

Question 23

Posterior wall Of Axilla

Answer 23

Formed by scapula, subscapularis, teres major and lattissimus dorsi mm.
Posterior axillary fold-inferior most part of posterior wall that may be grasped. Extends further inferior than anterior wall. Formed by latt. Doris and teres major mm. And skin

Question 24

Medial wall Of Axilla

Answer 24

Formed by thoracic wall. 1-4th rib and intercostal mm.. serratus anterior m.

Question 25

Lateral wall Of Axilla

Answer 25

Formed by intertubercular groove of humerus. Narrow wall.

Question 26

Axillary artery

Answer 26

Continuation of subclavian a. Begins at lateral border of 1st rib.
Passes posterior to pecctoralis minor m.
Ends at inferior border of teres major m.-becomes brachial artery

Question 27

3 parts of Axillary artery

Answer 27

1st part-from lateral border of 1st rib too medial border of pectoralis minor m. Enclosed in axillary sheath
2nd-posterior to pectoralis minor
3rd-from lateral border of pectoralis minor to inferior border of teres major.

Question 28

Axillary vein

Answer 28

Lies on anteromedial aspect of axillary a.

Question 29

Axillary vein is formed by union of….

Answer 29

Brachial vv. And basilic v. Occurs at inferior border of teres major m.

Question 30

Axillary vein ends…

Answer 30

At lateral border of 1st rib. Becomes subclavian v.