Arm

Question 1

Which compartment muscles are extensors? Flexors?

Answer 1

Posterior=extensors

Anterior=flexors

Question 2

What space lies anterior to the elbow?

Answer 2

Cubital fossa

Question 3

What important landmark lies on the posterior side of the midshaft of the humerus?

Answer 3

Radial groove

Question 4

What 2 structures connect the arm and forearm laterally?

Answer 4

Capitulum of humerus

Head of radius

Question 5

Which joint is located laterally between arm and forearm?

Answer 5

Humeroradial joint

Question 6

What 2 structures connect the arm and forearm medially?

Answer 6

Trochlea of humerus

Trochlear notch of ulna

Question 7

What joint connects the arm and forearm medially?

Answer 7

Humeroulnar joint

Question 8

How many fossa help with flexion/extension of the forearm? They are?

Answer 8

3- radial, coronoid, olecranon

Question 9

Which of the fossas are located anteriorly? Posteriorly?

Answer 9

Anterior- radial, coronoid

Posterior- olecranon

Question 10

The medial and lateral epicondyles of the distal humerus are important for what?

Answer 10

Attachment of forearm muscles

Question 11

What important structure lies posterior to the medial epicondyle?

Answer 11

Ulnar groove- ulnar nerve runs through

Question 12

What are the 3 joints of the elbow?

Answer 12

Humeroulnar
Humeroradial
Proximal radioulnar

Question 13

Which of the elbow joints is most stable?

Answer 13

Humeroulnar

Question 14

What structure is important to stabilize the proximal radioulnar joint?

Answer 14

Anular ligament

Question 15

What structure helps hold the radial head against the radial notch?

Answer 15

Anular ligament

Question 16

What structure permits pronation and supination?

Answer 16

Anular ligament

Question 17

What 2 structures prevent movement other than flexion and extension at the elbow?

Answer 17

Ulnar and radial collateral ligaments

Question 18

Which ligament at the elbow is most medial? Lateral?

Answer 18

Medial- ulnar collateral

Lateral- radial collateral

Question 19

What layer is directly under the skin?

Answer 19

Superficial fascia

Question 20

What are the layers starting from skin to muscle?

Answer 20

Skin
Superficial fascia
Deep fascia
Muscle

Question 21

Where do superficial veins run?

Answer 21

In superficial fascia

Question 22

Where do major nerves and vessels lie?

Answer 22

Perivascular sheath

Question 23

What 2 structures divide the arm into anterior and posterior compartments?

Answer 23

Medial and lateral intermuscular septa

Question 24

How many muscles are in the anterior arm? They are?

Answer 24

3- coracobrachialis, biceps brachii, brachialis

Question 25

Which muscle of the arm crosses both shoulder and elbow joints and acts on both?

Answer 25

Biceps brachii

Question 26

How many posterior muscles are there? They are?

Answer 26

1- triceps brachii

Question 27

What structure separates the medial and lateral heads of the triceps brachii? Why is it important?

Answer 27

Radial groove- radial nerve runs in it

Question 28

What nerve pierces through the coracobrachialis muscle?

Answer 28

Musculocutaneous

Question 29

What nerve runs in between brachialis and biceps brachii?

Answer 29

Musculocutaneous

Question 30

The musculocutaneous nerve runs ___________ to the biceps tendon and turns into which nerve?

Answer 30

Lateral | Lateral antebrachial cutaneous

Question 31

Which nerve runs laterally on the elbow?

Answer 31

Radial

Question 32

The radial nerve innervates which 3 regions?

Answer 32

Posterior arm Posterior forearm Skin of posterior arm

Question 33

The radial nerve branches into which 2 nerves? Where?

Answer 33

Deep radial Superficial radial After elbow

Question 34

Which 2 nerves have NO branches in the ARM?

Answer 34

Median | Ulnar

Question 35

Which nerve travels with the brachial artery?

Answer 35

Median

Question 36

Which nerve runs posterior to the medial epicondyle?

Answer 36

Ulnar

Question 37

When you bump your funny bone, which nerve are you compressing?

Answer 37

Ulnar

Question 38

The Axillary artery becomes what artery and where?

Answer 38

Brachial | At teres major

Question 39

What is the first branch of the brachial artery?

Answer 39

Profunda brachii/deep brachial

Question 40

What travels with the radial nerve?

Answer 40

Deep brachial artery

Question 41

The brachial artery eventually divides into 2 arteries. They are? Where do they run?

Answer 41

Radial- superficial | Ulnar- deep

Question 42

The deep and superficial veins run where?

Answer 42

Deep veins follow major arteries= venae comitantes | Superficial veins in superficial fascia

Question 43

What two functions do the superficial veins possess?

Answer 43

Thermoregulation | IV access

Question 44

Superficial veins start where?

Answer 44

Dorsum of hand

Question 45

The superficial veins branch into 2 main branches? They are? Where do they run?

Answer 45

Cephalic- lateral | Basilic- medial

Question 46

What vein connects the medial and lateral superficial veins?

Answer 46

Median cubital vein

Question 47

Where is the neurovascular bundle?

Answer 47

Medial side of arm

Question 48

What 3 structures are part of the neurovascular bundle?

Answer 48

Median nerve Ulnar nerve Brachial artery

Question 49

Where can the brachial pulse be palpated?

Answer 49

Neurovascular bundle

Question 50

What are the 3 borders of the cubital fossa?

Answer 50

Line through epicondyles Brachioradialis Pronator teres

Question 51

What 4 important structures are contained in the cubital fossa?

Answer 51

Superficial veins Cutaneous nerves Biceps tendon Bicipital aponeurosis

Question 52

What 2 major structures are located just deep to the bicipital aponeurosis?

Answer 52

Median nerve | Brachial artery

Question 53

From laterally to medially, what is the alignment of structures in the cubital fossa?

Answer 53

TAN- biceps tendon, brachial artery, median nerve

Question 54

How many compartments to the arm are there? They are?

Answer 54

Anterior | Posterior