Shoulder and Arm: Bones and Muscles

Question 1

What are the main shoulder and arm bones/

Answer 1

Stermun, clavicle, scapula, humerus

Question 2

T/F- Clavicle contains bone marrow

Answer 2

True

Question 3

Medial part of clavicle is anteriorly ____ and lateral part is ______

A) convex, concave
B) concave, convex
C) flat, narrow
D) narrow, flat

Answer 3

A) convex, concave

Question 4

T/F- Clavicle has a medullar cavity

Answer 4

False- it doesnt

Question 5

T/F- Clavicle is a long bone

Answer 5

True

Question 6

Where is the common location of a clavicle fracture?

Answer 6

Midshaft

Question 7

Where does the sternal and acromion end of clavicle attach to?

Answer 7

Sternal- manubrum of sternum

Acromial- acromion process

Question 8

Inferior glenoid tubercle is where the ______ attach

Answer 8

triceps long head

Question 9

Capitulum is where the _____ attaches and trochlea is where _____ attaches

A) ulna, radius
B) radius, ulna
C) carpal, metacarpal
D) metacarpal, carpal

Answer 9

B) Capitulum- radius; Trochlea- ulna

Question 10

Humerus bone undergoes ______ ossificationj

Answer 10

Endochondral

Question 11

What are the most potential fracture sites of humerus? What can be damaged when u fracture each of these sites?

Answer 11

Surgical neck (humeral circumflex artery) midshaft (radial nerve along with deep brachial artery), supracondylar region (median nerve and brachial artery) medial epicondyle (ulnar nerve)

Question 12

What are the superficial back muscles?

Answer 12

Trapezius and lattisimus dorsi

Question 13

Where does the trapezius insert?

Answer 13

Spine of scapula

Question 14

what are the borders of the triangle of auscultation

Answer 14

lattisimus dorsi, trapezius, medial border of scapula

Question 15

T/F-nerve supply of rhomboids comes from brachial plexsus

Answer 15

True

Question 16

Paralysis of the serratus anterior results in?

Answer 16

Winging of scapula

Question 17

What are the intrinsic shoulder muscles?

Answer 17

Deltoids, teres major, supraspinatus, infraspinatus, teres minor, subscapularis

Question 18

T/F- Teres major forms the lower inferior border of the axilla

Answer 18

False- teres minor

Question 19

What does the pec minor do? Where does it insert?

Answer 19

elevate rib, inserts to corocoid process

Question 20

Where does the pec major insert?

Answer 20

Lateral lip of intertubercular groove

Question 21

Where does the serratus anterior insert to?

Answer 21

anterior medial border of scapula

Question 22

what is the origin and insertion of deltoid?

Answer 22

Origin- clavicle and scapula

Insertion- deltoid tuberosity of humerus

Question 23

What is the origin and insertion of teres major?

Answer 23

Origin- Lower lateral border and inferior angle of the scapula.
Insertion- medial border of intertubercular grooove

Question 24

Which rotator cuff muscle attaches to the lesser tubercle of humerus?

Answer 24

subscapularis

Question 25

Where does the infra,supra spinatus and teres major

Answer 25

greater tubercle of humerus

Question 26

Origin of infraspinatus and supraspinatus?

Answer 26

supraspinatus- supraspinous fossa | infraspinatus- infraspinous fossa

Question 27

Muscles of the anterior component of arm

Answer 27

Biceps, coracobrachialis, brachialis

Question 28

Muscles of the anterior component of arm supplied by what nerve?

Answer 28

Musculocutanous nerve

Question 29

Insertion of brachialis?

Answer 29

tuberosity of ulna