Arm, Elbow, Forearms

Question 1

Remember these parts of the humerus

Answer 1

Question 2

Region of lumphatic drainage from the lateral part of the breast

Answer 2

Axilla

Question 3

Types of major muscles of the anterior compartment of the arm. Bonus points for specific names

Answer 3

Flexors of the forearm

• Coracobrachialis
• Biceps brachii
• Brachialis

Question 4

This nerve innervates the anterior compartment muscles?

Answer 4

Musculocutaneous nerve

Question 5

Review this diagram of the bones of the elbow

Answer 5

Question 6

What is the only muscle that crosses both the glenohumeral and ebow joint?

Answer 6

Biceps

Question 7

What is the most powerful supinator of the forearm when elbow joint is fixed?

Answer 7

Biceps

Question 8

Three major functions of the Biceps Brachii

Hint: 2 of them are flexes, 1 is supination

Answer 8

• Flexes the elbow
• Supinates the forearm
• Flexes the shoulder

Question 9

Actions of the Coracobrachilis

Also the origin of it (Hint: look at the name)

Answer 9

Flexes the shoulder

Adducts the shoulder

Origin: Coracoid process of scapula

Question 10

Function and origin of the Brachialis Muscle

Answer 10

Flexes the elbow

Origin: Distal half of anterior surface of humerus

Question 11

What major muscles make up the posterior compartment?

Answer 11

Extensors of the forearm (triceps)

Question 12

What nerve innervates the posterior compartment muscles?

Answer 12

Radial Nerve

Question 13

Functions of the three heads of the triceps brachii

Answer 13

All heads: Extend elbow

Long head specifically: Extends shoulder and adducts shoulder

Question 14

Remember this diagram of arteries of the arm (mainly the major ones, axillary, brachial, radial, ulnar)

Answer 14

Question 15

What two veins does the subclavian vein branch into?

Answer 15

Cephalic and Axillary

Question 16

What two veins arise from branching form the axillary vein?

Answer 16

Basilic and Brachial

Question 17

Four major nerves of the arm

Answer 17

Musculocutaneous

Median

Radial

Ulnar

Question 18

Know these general locations of the nerves of the arm

Answer 18

Question 19

Parts of the cubital fossa from lateral to medial

Answer 19

Biceps brachii tendon

Brachial artery

Median nerve

Question 20

Have general knowledge of these bones of the elbow

Answer 20

Question 21

Diagram of the elbow joint

Answer 21

Question 22

Radiograph of the elbow joint

Answer 22

Question 23

Radiograph of the bones of the elbow

Answer 23

Question 24

Notches of the elbow diagram

Answer 24

Question 25

Which element has the largest melting point?

Answer 25

Tungsten

Question 26

This is just a quick reminder to drink plenty of water and watch your posture.

Answer 26

That's all, get back to studying

Question 27

Which ligament provides 55% of resistance to valgus stress at the elbow at 90° flexion?

Answer 27

Ulna Collateral Ligament

Question 28

Which ligament is a strong band of fibers attached by both its ends to the anterior and posterior margins of the radial notch of the ulna?

Answer 28

Annular Ligament

Question 29

What two movemensts are possible at the annular ligament joint?

Answer 29

Pronation and Supination

Question 30

Review this diagram of the forearm

Answer 30

Question 31

What does the radial head articulate with?

Answer 31

Radial tuberosity of the humerus

Question 32

What is the thin fibrous sheath that connects the medial border of the radius to the lateral border of the ulna?

Answer 32

Intraosseus membrane

Question 33

Major function of the intraosseus membrane

Answer 33

Provides attachment for muscles in the anterior and posterior compartments

Question 34

Major movements of the elbow

Answer 34

Hinge: back and forth Supination and pronation

Question 35

True or false, the radius can cross the ulna

Answer 35

True! This allows for pronation and supination

Question 36

Where does the axillary artery name change to brachial artery?

Answer 36

At the level of the lower margin of teres major muscle

Question 37

Give distributions of the major nerves of the shoulder, arms and forearms Axillary Musculocutaneous Median Ulnar Radial

Answer 37

Axillar: deltoid and teres minor Musculotaneous: Flexors Median: Most of the flexor muscles of forearm and muscles in hand Ulnar: FCU and part of forearm and intrinsic muscles in hand Radial: innvervates all extensor muscles of arm and forearm

Question 38

Components and uses of anterior compartment of forearm

Answer 38

Flexion of wrists and fingers Pronation Superficia and deep layers

Question 39

Components and functions of posterior compartment of forearm

Answer 39

Extension of wirsts and fingers Supination Superficial and deep layer

Question 40

Three flexors of the wrist \*Most important: What is their common origin?

Answer 40

Flexor Carpi radialis Flexor Carpi ulnaris Palmaris longus Origin: Medial epicondyle of humerus (FLEM)

Question 41

Which flexo flexes and abducts the wrist? Can also assist in flexing elbow

Answer 41

Flexor carpi radialis

Question 42

Which flexor flexes the wrist and tenses the palmar fascia? Can also assit in flexing elbow

Answer 42

Palmaris longus

Question 43

Which flexor flexes the wrist, adducts the wrist and assist to flex the elbow

Answer 43

Flexor Carpi Ulnaris

Question 44

Three extensors of the wrist

Answer 44

Extensor carpi radialis longus Extensor carpi radialis brevis Extensor carpi ulnaris

Question 45

Common origin of the extensors of the wrist

Answer 45

Lateral epicondyle (LEX) (except not the radialis longus)

Question 46

Which nerve innervates the extensors of the wrist?

Answer 46

Radial nerve

Question 47

Origin of the Carpi Radialis Longus (This is actually important)

Answer 47

Distal 1/3 of lateral supracondylar ridge of the humerus

Question 48

Functions of both the Extensor Carpi Radialis Brevis and Longus

Answer 48

Extends wrist Abducts wrist Assists to flex elbow

Question 49

Functions of the extensor carpi ulnaris (2 of them)

Answer 49

Extends wrist Adducts wrist

Question 50

What holds bones together during pronation and supination? (There's 3 of them)

Answer 50

Annular ligament Inerosseus membran Articular disc at distal radioulnar joint

Question 51

Muscles that pronate the forearm

Answer 51

Pronator teres and pronator quadratus

Question 52

Function of the supinator

Answer 52

Supinates forearm (Who would've thought?)