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Anatomy Of Upper limbs > Brachium (Arm) > Flashcards

Brachium (Arm) Flashcards

1
Q

What is the arm?

A

The part of the upper limb between the glenohumeral joint and the elbow

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2
Q

What are the movements that occur at the elbow joint?

A

Flexion- extension
Pronation- supination

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3
Q

What is the bone of the arm?

A

Humerus

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4
Q

The muscles of the arm are divided into?

A

Anterior and posterior compartments

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5
Q

What are the muscles in the anterior compartment ?

A
  1. Biceps brachii
  2. Brachialis
  3. Coracobrachialis
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6
Q

What is the muscle of the posterior compartment?

A
  1. Triceps brachii
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7
Q

The muscles of the anterior compartment of the arm are innervated by

A

The musculocutaneous nerve

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8
Q

The muscle of the posterior compartment of the arm is innervated by

A

The radial nerve

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9
Q

What is the two headed muscle of the arm?

A

Biceps brachii

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10
Q

What is given off as the tendon of the biceps brachii enters the forearm?

A

A connective tissue sheet called bicipital aponeurosis

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11
Q

What forms the roof of the cubital fossa and blends with the deep fascia of the anterior forearm?

A

Bicipital aponeurosis

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12
Q

What is the origin of the biceps brachii?

A
  1. Long head originates from the supra glenoid tubercle of the scapula
  2. Short head originates from the coracoid process of the scapula
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13
Q

What is the insertion of the biceps brachii?

A

Inserts distally into the radial tuberosity and the fascia of the forearm using the bicipital aponeurosis

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14
Q

What is the innervation of the biceps brachii?

A

Musculocutaneous nerve

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15
Q

What is the function of the biceps brachii?

A
  1. Supination of the forearm
  2. Flexion of the arm at the elbow and shoulder
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16
Q

What is the flattened fusiform muscle that lies deep on the biceps brachii?

A

Brachialis muscle

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17
Q

What is the origin of the brachialis muscle?

A

Originates from the distal half of the anterior surface of the humeral shaft

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18
Q

What is the insertion of the brachialis muscle?

A

Inserts into the ulna tuberosity just distal to the elbow

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19
Q

What is the innervation of the brachialis muscle?

A

Musculocutaneous nerve with contributions from the radial nerve

20
Q

What is the elongated muscle in the superomedial part of the arm?

A

Coracobrachialis muscle

21
Q

What muscle is an important landmark in the arm the passes through the axilla?

A

Coracobrachialis muscle

22
Q

What is the origin of the coracobrachialis muscle?

A

Originates from the coracoid process of the scapula

23
Q

What is the insertion of the coracobrachialis muscle?

A

Inserts into the medial side of the humeral shaft at the level of the deltoid tubercle

24
Q

What is the innervation of the coracobrachialis muscle?

A

Musculocutaneous nerve

25
Q

What is the function of the coracobrachialis muscle?

A

Flexion of the arm at the shoulder and weak adduction

26
Q

What is the large fusiform muscle of the posterior compartment of the arm that has three heads?

A

Triceps brachii

27
Q

What are the three heads of the triceps brachii?

A
  1. Long head
  2. Lateral head
  3. Medial head
28
Q

Which head of the triceps brachii is the deepest?

A

The medial head

29
Q

What is the origin of the triceps brachii muscle?

A
  1. Long head originates from the infraglenoid tubercle
  2. Lateral head originates from the humerus superior to the radial groove
  3. Medial head originates from the humerus inferior to the radial groove
30
Q

What is the insertion of the triceps brachii?

A

They insert distally into the olecranon of the ulna

31
Q

What is the function of the triceps brachii?

A

Extends the arm at the elbow

32
Q

What is the innervation of the triceps brachii?

A

The radial nerve

33
Q

What artery provides the main support to the arm?

A

The Brachial artery

34
Q

What is the origin of the Brachial artery?

A

It originates from the inferior border of the teres major and ends in the cubital fossa

35
Q

The Brachial artery divides into?

A

The ulna and radial arteries

36
Q

The Brachial artery lies anterior to the ______ and _____

A

Triceps and Brachialis muscle

37
Q

The Brachial artery gives rise to many ________ and _______ that arise from its _______

A

Muscular branches and humeral nutrients arteries that arise from its lateral aspect

38
Q

The main branches of the Brachial artery arise from the ______

A

Medial aspect

39
Q

What are the main branches of the Brachial artery?

A
  1. Deep Brachial artery
  2. Superior ulnar collateral arteries
  3. Inferior ulnar collateral arteries
  4. Radial artery
  5. Ulnar artery
  6. Nutrient branches to the humerus
40
Q

What are the veins of the arm?

A
  1. Superficial veins
  2. Deep veins
41
Q

What are the main superficial veins of the arm?

A
  1. Cephalic vein
  2. Basilic vein
42
Q

What are the main deep veins of the arm?

A
  1. Radial vein
  2. Ulnar vein
  3. Brachial vein
  4. Axillary vein
  5. Subclavian vein
43
Q

What are the four main nerves that pass through the arm?

A
  1. Median nerve
  2. Ulnar nerve
  3. Musculocutaneous nerve
  4. Radial nerve
44
Q

One of the terminal branches of the lateral cord of the Brachial plexus is?

A

The musculocutaneous nerve

45
Q

Where does the musculocutaneous nerve begin?

A

Opposite the inferior border of the pectoralis minor

46
Q

After supplying the three muscles of the anterior compartment of the arm the musculocutaneous nerve becomes___________________

A

The lateral nerve of the forearm

47
Q

What is the function of the musculocutaneous nerve?

A

It supplies all the muscles of the anterior compartment of the arm

Anatomy Of Upper limbs (6 decks)

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