Anatomy Lab: Upper Limbs Sat Review

Front 1

Circumflex scapular a. is a direct branch of the __________________ & anastomeses with these 2 arteries:

Back 1

Circumflex scapular a. is a direct branch of the SUBSCAPULAR A. & anastomeses with these 2 arteries: dorsal scapular & suprascapular a.

Front 2

Shown here is the axillary n that innervated the deltoid muscle

Axillary nerve runs with w/ what artery?
Movement that would be principally affected if axillary nerve is damaged is ___________

Back 2

Axillary nerve runs with posterior circumflex artery
Movement that would be principally affected if axilary nerve is damaged is ABDUCTION of arm.

Note injury to axillary nerve will affect deltoid & teres minor muscle, which is why there will be weakened ability to abduct & laterally rotate arm.

Front 3

Muscles of rotator cuff:

Back 3

Supraspinatus Muscle
Subscapularis muscle (anterior)
Infraspinatus (posterior)
Teres minor (posterior)

Front 4

Name artery that accompanies the suprascapular nerve (C5, C6) This accompanying artery arises from where?

Back 4

Suprascapular artery runs with suprascapular nerve! Army goes over the bridge, navy goes under the bridge (bridge= the superior transverse scapular ligament)

Suprascapular artery arises from THYROCERVICAL TRUNK (first part) of subclavian artery.

Front 5

Shown here is Hulk , using his subscapularis muscle to medially rotate the shoulder (arrrgh)

Name origin & insertion of subscapularis muscle:

And what is insertion of teres minor?

Back 5

Shown is Subscapularis m. - it medially rotates shoulder ( bear hug movement)
Insertion: Lesser Tubercle of Humerus
Origin: Medial border of scapula

Teres minor:
Insertion: Greater tubercle of humerus

Front 6

The musculocutaneous nerve, represented by, C5/C6/C7, pierces what muscle (pointed by probe)?

Name terminal portion of musculocutaneous nerve.

Back 6

The musculocutaneous nerve, represented by, C5/C6/C7, emerges from CORACHOBRACHIALS MUSCLE.

Terminal portion: lateral antebrachail cutaneous nerve.

Front 7

The radial nerve is the ONLY motor AND sensory nerve to the posterior side of the upper limb (G-34).

Does it pass ANTERIOR or POSTERIOR to the latissimus dorsi & teres major?

Does the radial nerve arise from the lateral, posterior or medial cord? What other nerve arises from the same cord?

Back 7

Radial nerve pass ANTERIOR to the latissimus dorsi & teres major, but posterior to humerus.

Radial (C5-T1) & Axillary (C5&C6) nerve arise from the posterior cord

Front 8

All somatic plexuses in the body are formed by what Rami: VENTRAL OR POSTERIOR?

Back 8

Ventral . C5-T1 shown in brachial plexus represent ventral rami.

Front 9

Majority of inferior trunk of T1 will contribute to form what nerve?

Back 9

1st intercostal nerve

Front 10

c3, 4, 5 keeps the diaphragm alive. What cervical level forms the major contribution to the phrenic nerve?

Back 10

C4

Front 11

Which spinal cord segment represents the nerve to the subclavius muscle?

Back 11

C5.

C5 also represents the dorsal scapular nerve.

Front 12

The second part of the axillary artery is sitting by what LEVEL section of the brachial plexus?

Back 12

CORD level.

Front 13

The median nerve (C5-T1) will generally form _____ANTERIOR OR POSTERIOR________ to axillary artery?

Back 13

The median nerve will generally form ANTERIOR to the axillary artery.

Front 14

Which lies more medial to the chest: Lateral pectoral nerve or Medial pectoral nerve?

Back 14

Lateral pectoral nerve.

Front 15

Contributions emphasized in sat review

Long Thoracic Nerve & Musculatenous:

Remember, thoracodorsal nerve innervates

Back 15

C5, 6 ,7

Remember, thoracodorsal nerve innervates latissimus dorsi.

Front 16

Dorsal scapular nerve (C5) innervates

Suprascapular nerve (C5 & C6) innervates

Long thoracic nerve (C5, C6, C7) innervates

Back 16

Dorsal scapular nerve (C5) innervates levator scapulae muscle + rhomboids

Suprascapular nerve (C5 & C6) innervates supraspinatus + infraspinatus muscle.

Long thoracic nerve (C5, C6, C7) innervates serratus anterior

Front 17

Nerve to the subclavius (C5) ....

Lateral pectoral nerve innervates ________

Medial pectoral nerve innervates ________

Upper subscapular innervates upper subscapularis m. (yup, gave u that one!) <3

Lower subscapular nerve innervates the _____

The thoracodorsal (C6, 7, 8) innervates the ____________

Back 17

Nerve to the subclavius (C5) innervates the subclavius (how nice!)

Lateral pectoral nerve innervates the pectoralis major muscle

Medial pectoral nerve innervates the pectoralis major + minor muscle

Lower subscapular nerve innervates the teres major + subscapularis muscle


The thoracodorsal innervates the latissimus dorsi.

Front 18

The chorachobrachialis muscle, the biceps brachi & brachialis muscle are innervated by what nerve ?

Back 18

Musculocutaneous nerve (C5, C6, C7)

Front 19

Anconeus muscle is innervated by the _________nerve. The anconeus muscle supports triceps brachii in the extension of the forearm at the elbow.

Back 19

Anconeus muscle is innervated by the RADIAL nerve (C5-T1) nerve

Front 20

The superior ulnar collateral artery arises from the _____________ artery and courses distally with the __________ nerve and passes ______________ (posterior or anterior?) to the medical epicondyle of the humerus.

Back 20

The superior ulnar collateral artery arises from the BRACHIAL artery and courses distally with the ULNAR nerve and passes POSTERIOR to the medical epicondyle of the humerus.

Front 21

Shown here is the profunda brachii artery. It runs with what nerve?

Back 21

The profunda brachii artery runs with the radial nerve (C5-T1)

Front 22

Check out the bicipital tendons! (Cadaver version on back, of proximal ones)

The corresponding muscle are the biceps brachii muscles. Bicep muscles are innervated by ___________ nerve
Action of biceps ______________

Back 22

Bicep muscles are innervated by musculocutaneous nerve ( C5, C6)
The biceps brachii muscle supinates & flexes the forearm.

Front 23

There is a short & long head of the biceps brachii muscle.

Which head is more medial?
For each head, where is its attachment on the scapula?

Back 23

The short head is more medial to the long head.

The short head attaches to the coracoid process of the scapula
The long head attaches to the supraglenoid tubercle of the scapula.

Front 24

Shown w/ probe: bicipital aponeurosis
Oh hey! Is the bicipital aponeurosis located on the medial OR lateral side of the biceps brachii tendon (at level of elbow)?

Back 24

the bicipital aponeurosis is located on the MEDIAL side of the biceps brachii tendon (Grey's 36)

Front 25

Basilic vein, which pierces ,the brachial fascia, originates form

Back 25

Basilic vein originates from dorsal venous arch of hand. The dorsal venous network lies beneath skin of the back of hand, superficial to extensor tendons.

Front 26

The lower subscapular nerve (C5, C6) innervates what muscle(s)?

Back 26

The teres major + supscapularis muscle
(Note subscapularis muscle is innervated by both the upper + lower subscapular nerve)

Front 27

Will the medial antebrachial cutaneous nerve & medical brachial cutaneous nerve innervate skeletal muscle?


What nerve does the medial brachial cutaneous nerve will usually anatomose with what other nerve?

Back 27

NO. Medial antebrachial cutaneous nerve & medical brachial cutaneous nerve will innervate SMOOTH muscle.

Medial brachial cutaneous nerve will usually anatomose with the intercostal brachial nerve, from the lateral cutaneous branch of T2.

Front 28

Yezzir! The tendon of the long head of the biceps brachii.

Is the tendon come in contact with synovial fluid?

Back 28

No, baby!!

Front 29

Came up 2x in sat review. Shown here is the protanator quadratus muscle, innervated by the ____________ nerve.

This nerve that innervates the protantor quadratus muscle, is a branch of the ______________ nerve.

Back 29

The protanator quadratus muscle, innervated by the anterior interosseous nerve, a branch of the median nerve.

Front 30

anterterior interosseus syndrome (left)

Back 30

Inability to flex DIP of index finger & thumb

Front 31

Note configuration- The ________ artery is immediately lateral to the tendon of the flexor carpi radialis. (See Grant's Dissector Fig. 2.34)

Back 31

The radial artery is immediately lateral to the tendon of the flexor carpi radialis.

Front 32

Identify A, B, C, E

Back 32

A= Brachioradialis
B = Biceps brachii
C = Flexor Carpi radialis
E = Triceps brachii

Front 33

The interosseous membrane of the forearm is a fibrous sheet that connects the radius and the ulna

What type of joint does this comprise? If you can, be specific of joint subtype.

(Hint: answer is in sentence above)

Back 33

The interosseus membrane of the forearm is a FIBROUS sheet that connects the radius and the ulna.

Fibrous joint, subtype syndesmosis

UMIch:

Syndesmoses: In this type of joint, apposed bones are joined by a fibrous membrane (interosseous membrane) or a ligament.
These joints are slightly moveable and are maintained as fibrous unions throughout life.

Other examples of syndesmoses:
The attachment of the borders of the tibia and fibula, which are connected with an interosseous membrane
& inferior tibiofibular joint which is connected by a ligament.

Front 34

Which of the following is an example of a syndesmosis?

The knee joint
The junction of the bones in the skull
The joint between a tooth and its socket
The ankle joint
The joint between the long borders of the tibia and fibula

Back 34

The joint between the long borders of the tibia and fibula

Examples of syndesmoses are the attachment of the borders of the radius and ulna, which are connected with an interosseus membrane, the attachment of the borders of the tibia and fibula, which are connected with an interosseous membrane, and the inferior tibiofibular joint which is connected by a ligament.

Front 35

The common interosseus artery is a branch of the _________ artery.

Back 35

The common interosseus artery (shown w/ probe) is a branch of the ULNAR artery.

Front 36

Note the branches of the common interosseus artery: The anterior & posterior interosseus artery.

Which of of its branches supplies the flexor muscle?

Back 36

The anterior interosseus supplies the deep layer of the forearm flexor muscles.

The posterior interosseus artery supplies the extensor group of the forearm muscles.

Front 37

Identify (Umich practical)

Back 37

The medial antebrachial cutaneous nerv

The medial antebrachial cutaneous nerve travels with the basilic vein for part of its course. It innervates the skin of the medial side of the forearm.

Front 38

The flexor digitorum profundus muscle is on the anterior surface of the ulna & interosseous membrane

The flexor digitorum profundus tendons attaches to what part of the phalanx on which digits?

And what of the flexor digitorum superficialis?

Back 38

The flexor digitorum profundus tendons attach to the DISTAL phalanx of digits 2 to 5.

The flexor digitorum superficialis attaches to the MIDDLE of the phalanx of digits 2 to 5.

Front 39

The flexor digitorum profundus muscle has 2 motor nerves:
the lateral half is innervated by the ________ nerve and the medial half is innervated by the __________ nerve.

Back 39

Note the flexor digitorum profundus muscle has 2 motor nerves: the lateral half is innervated by the median nerve and the medial half is innervated by the ulnar nerve.

Front 40

THENAR muscles

On which bones does the the opponens pollicis act?
What is the innervation of the opponens pollicis?

On which bones does the abductor pollicis brevis muscle act?
What is the innervation of the abductor pollicis brevis?

On which bone does the flexor pollicis brevis muscle act?
What is the innervation of the flexor pollicis brevis?

Back 40

Opponens pollicis muscle (deepest)
1st metacarpal.
Recurrent branch of the median nerve

Abductor pollics brevis muscle & Flexor pollicis muscle innervation:
Act on Proximal Phalanx of Thumb & innervated by Median nerve

Flexor pollicis brevis flexes, opponens "opposes" thumb

Front 41

The deep branch of the radial nerve dives between the two heads of the supinator muscle & when it emerges on distal end the nerve is then know as the _______________

Back 41

Posterior Interosseus Nerve

Front 42

The axillary nerve innervates which structures?

Damage to the axillary nerve will lead to what symptoms?

And what artery does the axillary nerve run with?

Back 42

The axillary nerve innervates the teres minor & deltoid muscle. It also provides cutaneous innervation to the shoulder region.

Damage will lead to anesthesia to the superior lateral portion of the arm & wasting of the shoulder region.

The axillary nerve runs with the posterior circumflex humeral artery.