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Anatomy - OINAs > UE - Nerve and Blood Supply > Flashcards

UE - Nerve and Blood Supply Flashcards

1
Q

Name 5 arteries of the UE

A

Subclavian a
Axillary a
Brachial a
Ulnar/Radial a

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2
Q

Name 3 sections of the axillary a

A

1st - begins at lateral border of 1st rib

2nd - pec minor level

3rd - end at inferior border border of the teres major

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3
Q

What is shoulder anastomoses?

A

Consists of the anterior/posterior circumflex humeral and the 3rd part of axillary artery

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4
Q

Brachial Artery (Begins at)

A

inferior border of the teres major

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5
Q

Brachial Artery (Ends at)

A

the cubital fossa (opposite neck of radius)

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6
Q

How does the brachial a. divide?

A

it divides at the bicipital groove into the profound brachii artery (deep artery of the arm), radial and ulnar arteries

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7
Q

Profound brachii artery follows what

A

the radial nerve, passing posteriorly along the radial groove

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8
Q

Where does the ulnar/radial arteries divide?

A

as the brachial artery passes under the bicipital groove

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9
Q

What is Elbow Anastomoses?

A

it consists of the radial/ulnar collaterals + recurrents

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10
Q

Radial A. - Radial recurrent

A

anastomosis with radial collateral (from deep A of arm), supply elbow

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11
Q

Radial A. - Superficial palmar branch

A

anastomosis with terminal part of ulnar A to form SUPERFICIAL palmar ARCH

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12
Q

Radial A. - Palmar carpal branch

A

anastomosis with carpal branch of ulnar A to form palmar CARPAL ARCH

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13
Q

Radial A. - Dorsal branch

A

anastomosis with dorsal carpal branch of ulnar A to form DORSAL CARPAL ARCH

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14
Q

Ulnar A. - Anterior ulnar recurrent

A

anastomosis with inferior ulnar collateral A, supply elbow

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15
Q

Ulnar A. - Posterior ulnar recurrent

A

anastomosis with superior ulnar collateral A, supply elbow

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16
Q

Ulnar A. - Common interosseous

A

arises in cubital fossa, divides almost immediately into anterior & posterior interosseous A’s
Anterior – anterior of interosseous membrane(IM) and then pierces IM and travels posteriorly (suuplies both compartments)
Posterior – travels posterior to IM, gives of recurrent interosseous which helps supply elbow

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17
Q

Ulnar A. - Palmar carpal branch

A

anastomosis with palmar carpal branch of radial A to form palmar CARPAL ARCH

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18
Q

Ulnar A. - Dorsal carpal branch

A

anastomosis with dorsal carpal branch of radial A to form DORSAL CARPAL ARCH

19
Q

Ulnar A. - Superficial branch of ulnar A

A

anastomosis with superficial branch of radial A to form SUPERFICIAL palmar ARCH

20
Q

Ulnar A. - Deep branch of ulnar A

A

anastomosis with terminal portion of radial A to form DEEP palmar ARCH

21
Q

What are the 6 divisions of the Brachial Plexus?

A

Roots, trunk, divisions, cords, and terminal branches (peripheral nerves)

22
Q

What are the 4 major terminals in the Brachial Plexus?

A

Radial, Median, Ulnar, & Musculocutaneous nerves

22
Q

Which roots form the Brachial Plexus?

A

C5, C6, C7, C8, & T1

23
Q

Where does the Brachial Plexus pass through?

A

the neck and axilla to arm

24
Q

Where does the Brachial Plexus emerge?

A

Between the anterior and middle scalene

25
Q

What is the Brachial Plexus responsible for?

A

Cutaneous and muscular innervation of the entire upper limb, EXCEPT the trapezius and a small area of skin near the axilla

26
Q

How many trunks of brachial plexus?

A

3 - superior, middle, inferior

27
Q

How many divisions of brachial plexus?

A

6:
3 anterior / 3 posterior - superior, middle, inferior

28
Q

How many cords of brachial plexus?

A

3 - lateral, posterior, medial

29
Q

Axillary Nerve - Course

A

-Emerges from the posterior cord
-Passes through quadrangular space
-innervates deltoid and teres minor

30
Q

Musculocutaneous Nerve -Course

A

-Emerges from lateral cord
-pierces coracobrachialis
-travels between biceps brachii and brachialis
-innervates coracobrachialis, biceps brachii, brachialis
-cont’s to forearm to form lateral cutaneous nerve (sensations from anterolateral forearm)

31
Q

Radial Nerve - course to forearm

A

-Emerges from posterior cord
-exits post./infer. to teres major
-descends w/ deep a. of the arm as it wraps along the spiral (radial) groove of humerus
-descends btw the lat./med. heads pf the triceps
-wraps ant. as it pierces lateral intermuscular septum
-passes ant. to elbow as it descends into forearm

32
Q

Radial Nerve - course to wrist

A

-Enters forearm anterior to elbow
-Divides into deep and superficial branches
-Superficial branch descends deep to brachioradialis to supply sensation in hand
-Deep branch descends through supinator & innervates: Extensor carpi radialis brevis + Supinator
-Deep branch becomes Posterior interosseous nerve (PIN) distal to supinator

33
Q

What does the PIN innervate?

A

-Extensor digitorum
-Extensor digiti minimi
-Extensor carpi ulnaris
-Extensor indices
-Abductor pollicis longus
-Extensor pollicis longus and brevis

34
Q

Median Nerve - Course

A

-Emerges from medial and later cords
-Follows brachial artery (lat. than medially) as it descends to arm
-DOES NOT supply any muscles in the axilla or upper arm
-Innervates most muscles of the ant. compartment of forearm, some intrinsic of the hand
-enters forearm via cubital fossa

35
Q

Ulnar Nerve -Course

A

-Emerges from Medial Cord
-Follows brachial artery (medially) as it descends in arm
-DOES NOT supply any muscles in the axilla or upper arm
-Innervates a few flexors and receives cutaneous sensory info from D5 & medial ½ of D4
-Descends POSTERIOR to elbow; posterior to the medial epicondyle and medial to the olecranon
-Enters forearm via cubital tunnel

36
Q

Median Nerve in the Hand

A

-Palmar surface and digits 1-3 1/2 of ring finger
-distal dorsal surface of digits 1-3 1/2

37
Q

Ulnar Nerve in the Hand

A

-Medial dorsum of hand
-Medial palmar surface
-Digits 4 1/2 and 5

38
Q

Radia Nerve in the Hand

A

-Lateral dorsum of hand; EXCEPT that innervated by median nerve

39
Q

Radial Nerve’s Brachial Plexus Course

A

-Root(s): C6, C7, C8
-Trunk(s): Superior, middle
-Division(s): Posterior
-Cord(s): Posterior

Muscles: Brachioradialis, Triceps Brachii, and Anconeus

40
Q

Ulnar Nerve’s Brachial Plexus Course

A

-Root(s): C8, T1
-Trunk(s): Inferior
-Division(s): Anterior
-Cord(s): Medial

Muscles: lots of wrist/hand

41
Q

Musculocutaneous’ Brachial Plexus Course

A

-Root(s): C5, C6, C7
-Trunk(s): Superior, Middle
-Division(s): Anterior
-Cord(s): Lateral

-Muscles: Coracobrachialis, Biceps Brachii, and Brachialis

42
Q

Median’s Brachial Plexus Course

A

-Root(s): C5, C6, C7, C8, T1
-Trunk(s): Superior, Middle, Inferior
-Division(s): Anterior
-Cord(s): Lateral, Medial

Muscles: Pronator Teres

43
Q

Axillary’s Brachial Plexus Course

A

-Root(s): C5, C6
-Trunk(s): Superior
-Division(s): Posterior
-Cord(s): Posterior

-Muscles: Teres minor and Deltoid

Anatomy - OINAs (6 decks)

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