Unit One Brachial Muscles

Question 1

Borders of quadrangular space

Answer 1

Teres minor, teres major, long head of triceps and humerus

Question 2

Contents in quadrangular space

Answer 2

Axillary nerve and posterior circumflex humeral vessels

Question 3

Borders of triangular space

Answer 3

Teres minor, teres major, long head of triceps

Question 4

Contents in triangular space

Answer 4

Circumflex scapular vessels

Question 5

Borders of triangular interval

Answer 5

Teres major, long head of triceps and lateral head of triceps

Question 6

Contents in triangular interval

Answer 6

Radial nerve and deep brachial vessels (profunda brachii)

Question 7

What are the three anterior compartment muscles of brachii

Answer 7

Coracobrachialis, biceps brachii and brachialis

Question 8

Brachial muscles anterior portion are innervated by

Answer 8

Musculocutaneous nerve

Question 9

What runs posterior medial to coracobrachialis

Answer 9

Median nerve and brachial artery

Question 10

What enters at distal end of coracobrachialis

Answer 10

Nutrient artery of humerus

Question 11

What pierces the coracobrachialis

Answer 11

Musculocutaneous nerve

Question 12

Do the biceps brachii have a direct attachment to the humerus

Answer 12

No

Question 13

The long head of biceps brachii passes through what and under what

Answer 13

Intertubercular sulcus and under the transverse humeral ligament

Question 14

What action is weak of biceps brachii

Answer 14

Flexes arm

Question 15

What is the strongest forearm flexor with forearm at 90 degrees and supinated

Answer 15

Biceps brachii

Question 16

What is the strongest supination with forearm at 90 degrees

Answer 16

Biceps brachii

Question 17

What is the workhouse of the anterior compartment

Answer 17

Brachialis

Question 18

What muscle is located deep to biceps brachii

Answer 18

Brachialis

Question 19

What are the two posterior brachial compartment muscles

Answer 19

Triceps and anconeus

Question 20

Posterior brachial compartment muscles are innervated by

Answer 20

Radial nerve

Question 21

What part of triceps brachii is weak when extending and adducting arm

Answer 21

Long head

Question 22

What are the boundaries of the cubital fossa

Answer 22

Superior is a line from the medial to the lateral epicondyles, medial is common flexor forearm tendon and pronator teres, lateral is extensor tendons from the lateral epicondyle and brachioradialis, floor is brachialis and supinator, and roof is skin, median cubital vein, fat, fascia and bicipital aponeurosis

Question 23

What are the contents in the cubital fossa from medial to lateral

Answer 23

Median nerve, terminal brachial artery (radial and ulnar branches form at apex), biceps tendon and deep radial nerve

Question 24

What is a continuation of the axillary artery

Answer 24

Brachial artery

Question 25

Where does the brachial artery begin

Answer 25

Lower border of teres major

Question 26

Where does the brachial artery end

Answer 26

Cubital fossa

Question 27

What does the brachial artery split into and where

Answer 27

Radial and ulnar arteries opposite the neck of the radius

Question 28

Where does the brachial artery run

Answer 28

Bicipital groove, anterior to the triceps and brachialis, medial to humerus

Question 29

Where does the brachial artery enter into the cubital fossa

Answer 29

Anterior to the medial supracondylar ridge

Question 30

Brachial artery enters into cubital fossa with what nerve

Answer 30

Median nerve

Question 31

What are the branches of the brachial artery

Answer 31

Nutrient artery, profunda brachii, superior ulnar collateral and inferior ulnar collateral

Question 32

Nutrient artery goes where

Answer 32

To humerus at coracobrachialis

Question 33

Profunda brachii runs with what and where

Answer 33

Radial nerve in the radial groove

Question 34

Profunda brachii artery branches into

Answer 34

Middle and radial collateral branch at lateral epicondyle

Question 35

The middle and radial collateral branches fuse into what other artery

Answer 35

Recurrent radial artery

Question 36

Superior ulnar artery branches off brachial artery on what side

Answer 36

Medial side and posterior

Question 37

Superior ulnar artery fuses with what artery

Answer 37

Posterior ulnar recurrent artery

Question 38

Inferior ulnar collateral artery is going to run on what side after branching from brachial artery

Answer 38

Medial side and anterior to medial epicondyle

Question 39

Inferior ulnar collateral artery fuses with what artery

Answer 39

Anterior ulnar recurrent artery

Question 40

The peri elbow collateral circulation allows for

Answer 40

Flow to continue dismally when the forearm is fully flexed causing occlusion of the brachial artery

Question 41

What are the superficial veins of the upper extremity

Answer 41

Cephalic, basilic and median cubital vein

Question 42

What is the deep vein of the upper extremity

Answer 42

Brachial vein

Question 43

Where does the brachial vein form

Answer 43

Elbow by the joining of the radial and ulnar veins

Question 44

Brachial joins what vein to become the axillary vein

Answer 44

Basilic vein

Question 45

What is the most common complication of humeral fractures

Answer 45

Radial nerve entrapment

Question 46

Mid shaft or distal fractures of the humerus can entrap what nerve in the fracture fragments

Answer 46

Radial nerve

Question 47

What is radial nerve palsy

Answer 47

Inability to extend the wrist and fingers

Question 48

Recovery rates of radial nerve entrapment are relative to

Answer 48

Type of fracture and amount of nerve impingement