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Human Anatomy (DO 1) > Lab 6: Arm and Cubital Fossa > Flashcards

Lab 6: Arm and Cubital Fossa Flashcards

1
Q

Contents of the Anterior compartment of the arm

A
  • 3 muscles
    • Biceps brachii
    • Coracobrachialis
    • Brachialis
  • 1 Nerve
    • Musculocutaneous
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2
Q

Contents of the Posterior compartment of the arm

A
  • 2 muscles
    • Triceps brachii
    • anconeus
  • Neurovasculature
    • Radial N
    • Profunda Brachii A, V
    • Basilica Veins
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3
Q

Components of the intermuscular septum

A
  • Brachial A
  • Brachial and basilica V
  • Median N
  • Ulnar N
  • MABC N
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4
Q

Path of tendon of long head of biceps brachii

A
  • Passes deep to enter bicipital groove
  • courses over top of glenohumeral joint
  • Merges with superior portion of glenoid labrum
  • attaches to the supraglenoid tubercle of the scapula
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5
Q

What nerve pierces the coracobrachialis

A

musculocutaneous

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6
Q

Attachment of coracobrachialis

A
  • distal insertion at midshaft of humerus
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7
Q

what muscle lies deep to the biceps brachii

A

Brachialis

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8
Q

brachialis (location and insertion)

A

deep to biceps brachii
distal half of arm
crosses elbow joint
Inserts on ulnar tuberosity

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9
Q

Biceps brachii tendon attachment

A

attaches to radial tuberosity

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10
Q

Bicipital aponeurosis attachment

A

spreads out medially to antebrachial fascia

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11
Q

Lateral Cutaneous Nerve of forearm

A

Musculocutaneous nerve named lateral cutaneous nerve after innervating anterior compartment muscles

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12
Q

What nerve runs along side the cephalic being from the cubital fossa to the forearm?

A

Lateral cutaneous nerve (distal musculocutaneous)

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13
Q

Pathway of Musculocutaneous nerve

A
  • emerges from lateral cord of brachial plexus
  • Through coracobrachialis
  • Runs in plane between biceps brachii and brachialis muscles
  • continues distally as the lateral cutaneous nerve after innervating anterior compartment muscles
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14
Q

What nerve follows the Basilic vein from plexus to elbow

A

Medial Cutaneous Nerve of forearm (MABC)

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15
Q

Median nerve pathway in arm

A

no branching

crosses from lateral to medical side of the brachial artery at midarm

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16
Q

Ulnar nerve pathway in distal arm

A

leaves medial intermuscular septum and travels to posterior compartment toward cubital tunnel
accompanied by superior ulnar collateral branch of brachial artery

17
Q

Which artery does the ulnar nerve follow through the distal arm

A

Superior ulnar collateral branch of the brachial artery

18
Q

Axillary A –> Brachial A transition

A

changes names at the inferior border of teres major

19
Q

Triangular interval contents

A
  • Profunda brachii artery (deep brachial)

- Radial Nerve

20
Q

Branches of the brachial artery

A

Profunda Brachial Artery (1st branch)
Superior Ulnar Collateral Artery
Inferior Ulnar Collateral Artery

21
Q

Inferior ulnar collateral artery pathway

A
  • passes anterior to the elbow
22
Q

lateral boundary of the cubital fossa

A

brachiradialis

23
Q

medial boundary of the cubital fossa

A

pronator teres

24
Q

superior boundary of cubital fossa

A

epicondyle line

25
Q

roof of cubital fossa

A

bicipital aponeurosis

26
Q

floor of cubital fossa

A

brachialis and supinator

27
Q

Order of large structures on the cubital fossa

A

lateral- tendons of biceps brachii
intermediate- brachial artery
Medial- median nerve

28
Q

terminal bifurcation of brachial artery

A 
Ulnar artery (medial) 
Radial artery (lateral)
29
Q

Vena comitantes

A

veins in distal limbs are paired
Major functions
1.) heat exchange
2.) arterial venous pump

30
Q

Aponeurosis as barrier

A

provides a barrier to deeper structures (Median N and Brachial A) but allow for puncture of superficial veins

31
Q

Attachment of heads of triceps brachii

A
  • all three heads ( long, lateral, and medial) attach distally to the olecrenon processof the ulna

NOTE: Medial head is found deep to the long head

32
Q

What lies in radial groove of the humerus

A

Radial nerve and profunda brachii artery

33
Q

Bifurcation of profunda brachii

A

occurs near shaft of humerus

  • middle collateral artery
  • Radial collateral artery
34
Q

What artery follows the radial nerve into the intermuscular septum

A

Radial artery (bifurcation of profunda brachii)

35
Q

Point of triangle surrounding anconeus muscle

A
  • lateral epicondyle
  • olecranon process
  • 3 inches down exposed ulnar shaft
36
Q

Which ligament is the most lateral in attaching the coracoid process and the clavicle?

A

Trapezoid ligament

37
Q

which two muscles originate from the coracoid process

A

Coracobrachialis

Short head of biceps brachii

Human Anatomy (DO 1) (13 decks)

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