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Winter Anatomy Quiz 3 > Arm > Flashcards

Arm Flashcards

1
Q

Which compartment muscles are extensors? Flexors?

A

Posterior=extensors

Anterior=flexors

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2
Q

What space lies anterior to the elbow?

A

Cubital fossa

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3
Q

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

A

Radial groove

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4
Q

What 2 structures connect the arm and forearm laterally?

A

Capitulum of humerus

Head of radius

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5
Q

Which joint is located laterally between arm and forearm?

A

Humeroradial joint

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6
Q

What 2 structures connect the arm and forearm medially?

A

Trochlea of humerus

Trochlear notch of ulna

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7
Q

What joint connects the arm and forearm medially?

A

Humeroulnar joint

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8
Q

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

A

3- radial, coronoid, olecranon

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9
Q

Which of the fossas are located anteriorly? Posteriorly?

A

Anterior- radial, coronoid

Posterior- olecranon

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10
Q

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

A

Attachment of forearm muscles

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11
Q

What important structure lies posterior to the medial epicondyle?

A

Ulnar groove- ulnar nerve runs through

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12
Q

What are the 3 joints of the elbow?

A

Humeroulnar
Humeroradial
Proximal radioulnar

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13
Q

Which of the elbow joints is most stable?

A

Humeroulnar

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14
Q

What structure is important to stabilize the proximal radioulnar joint?

A

Anular ligament

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15
Q

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

A

Anular ligament

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16
Q

What structure permits pronation and supination?

A

Anular ligament

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17
Q

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

A

Ulnar and radial collateral ligaments

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18
Q

Which ligament at the elbow is most medial? Lateral?

A

Medial- ulnar collateral

Lateral- radial collateral

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19
Q

What layer is directly under the skin?

A

Superficial fascia

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20
Q

What are the layers starting from skin to muscle?

A

Skin
Superficial fascia
Deep fascia
Muscle

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21
Q

Where do superficial veins run?

A

In superficial fascia

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22
Q

Where do major nerves and vessels lie?

A

Perivascular sheath

23
Q

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

A

Medial and lateral intermuscular septa

24
Q

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

A

3- coracobrachialis, biceps brachii, brachialis

25
Q

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

A

Biceps brachii

26
Q

How many posterior muscles are there? They are?

A

1- triceps brachii

27
Q

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

A

Radial groove- radial nerve runs in it

28
Q

What nerve pierces through the coracobrachialis muscle?

A

Musculocutaneous

29
Q

What nerve runs in between brachialis and biceps brachii?

A

Musculocutaneous

30
Q

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

A

Lateral

Lateral antebrachial cutaneous

31
Q

Which nerve runs laterally on the elbow?

A

Radial

32
Q

The radial nerve innervates which 3 regions?

A

Posterior arm
Posterior forearm
Skin of posterior arm

33
Q

The radial nerve branches into which 2 nerves? Where?

A

Deep radial
Superficial radial
After elbow

34
Q

Which 2 nerves have NO branches in the ARM?

A

Median

Ulnar

35
Q

Which nerve travels with the brachial artery?

A

Median

36
Q

Which nerve runs posterior to the medial epicondyle?

A

Ulnar

37
Q

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

A

Ulnar

38
Q

The Axillary artery becomes what artery and where?

A

Brachial

At teres major

39
Q

What is the first branch of the brachial artery?

A

Profunda brachii/deep brachial

40
Q

What travels with the radial nerve?

A

Deep brachial artery

41
Q

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

A

Radial- superficial

Ulnar- deep

42
Q

The deep and superficial veins run where?

A

Deep veins follow major arteries= venae comitantes

Superficial veins in superficial fascia

43
Q

What two functions do the superficial veins possess?

A

Thermoregulation

IV access

44
Q

Superficial veins start where?

A

Dorsum of hand

45
Q

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

A

Cephalic- lateral

Basilic- medial

46
Q

What vein connects the medial and lateral superficial veins?

A

Median cubital vein

47
Q

Where is the neurovascular bundle?

A

Medial side of arm

48
Q

What 3 structures are part of the neurovascular bundle?

A

Median nerve
Ulnar nerve
Brachial artery

49
Q

Where can the brachial pulse be palpated?

A

Neurovascular bundle

50
Q

What are the 3 borders of the cubital fossa?

A

Line through epicondyles
Brachioradialis
Pronator teres

51
Q

What 4 important structures are contained in the cubital fossa?

A

Superficial veins
Cutaneous nerves
Biceps tendon
Bicipital aponeurosis

52
Q

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

A

Median nerve

Brachial artery

53
Q

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

A

TAN- biceps tendon, brachial artery, median nerve

54
Q

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

A

Anterior

Posterior

Winter Anatomy Quiz 3 (3 decks)

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