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42 Cards in this Set
- Front
- Back
Circumflex scapular a. is a direct branch of the __________________ & anastomeses with these 2 arteries:
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Circumflex scapular a. is a direct branch of the SUBSCAPULAR A. & anastomeses with these 2 arteries: dorsal scapular & suprascapular a.
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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 ___________ |
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. |
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Muscles of rotator cuff:
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Supraspinatus Muscle
Subscapularis muscle (anterior) Infraspinatus (posterior) Teres minor (posterior) |
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Name artery that accompanies the suprascapular nerve (C5, C6) This accompanying artery arises from where?
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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. |
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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? |
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 |
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The musculocutaneous nerve, represented by, C5/C6/C7, pierces what muscle (pointed by probe)?
Name terminal portion of musculocutaneous nerve. |
The musculocutaneous nerve, represented by, C5/C6/C7, emerges from CORACHOBRACHIALS MUSCLE.
Terminal portion: lateral antebrachail cutaneous nerve. |
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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? |
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 |
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All somatic plexuses in the body are formed by what Rami: VENTRAL OR POSTERIOR?
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Ventral . C5-T1 shown in brachial plexus represent ventral rami.
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Majority of inferior trunk of T1 will contribute to form what nerve?
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1st intercostal nerve
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c3, 4, 5 keeps the diaphragm alive. What cervical level forms the major contribution to the phrenic nerve?
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C4
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Which spinal cord segment represents the nerve to the subclavius muscle?
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C5.
C5 also represents the dorsal scapular nerve. |
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The second part of the axillary artery is sitting by what LEVEL section of the brachial plexus?
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CORD level.
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The median nerve (C5-T1) will generally form _____ANTERIOR OR POSTERIOR________ to axillary artery?
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The median nerve will generally form ANTERIOR to the axillary artery.
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Which lies more medial to the chest: Lateral pectoral nerve or Medial pectoral nerve?
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Lateral pectoral nerve.
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Contributions emphasized in sat review
Long Thoracic Nerve & Musculatenous: Remember, thoracodorsal nerve innervates |
C5, 6 ,7
Remember, thoracodorsal nerve innervates latissimus dorsi. |
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Dorsal scapular nerve (C5) innervates
Suprascapular nerve (C5 & C6) innervates Long thoracic nerve (C5, C6, C7) innervates |
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 |
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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 ____________ |
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. |
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The chorachobrachialis muscle, the biceps brachi & brachialis muscle are innervated by what nerve ?
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Musculocutaneous nerve (C5, C6, C7)
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Anconeus muscle is innervated by the _________nerve. The anconeus muscle supports triceps brachii in the extension of the forearm at the elbow.
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Anconeus muscle is innervated by the RADIAL nerve (C5-T1) nerve
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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.
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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.
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Shown here is the profunda brachii artery. It runs with what nerve?
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The profunda brachii artery runs with the radial nerve (C5-T1)
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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 ______________ |
Bicep muscles are innervated by musculocutaneous nerve ( C5, C6)
The biceps brachii muscle supinates & flexes the forearm. |
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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? |
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. |
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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)? |
the bicipital aponeurosis is located on the MEDIAL side of the biceps brachii tendon (Grey's 36)
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Basilic vein, which pierces ,the brachial fascia, originates form
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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.
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The lower subscapular nerve (C5, C6) innervates what muscle(s)?
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The teres major + supscapularis muscle
(Note subscapularis muscle is innervated by both the upper + lower subscapular nerve) |
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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? |
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. |
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Yezzir! The tendon of the long head of the biceps brachii.
Is the tendon come in contact with synovial fluid? |
No, baby!!
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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. |
The protanator quadratus muscle, innervated by the anterior interosseous nerve, a branch of the median nerve.
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anterterior interosseus syndrome (left)
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Inability to flex DIP of index finger & thumb
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Note configuration- The ________ artery is immediately lateral to the tendon of the flexor carpi radialis. (See Grant's Dissector Fig. 2.34)
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The radial artery is immediately lateral to the tendon of the flexor carpi radialis.
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Identify A, B, C, E
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A= Brachioradialis
B = Biceps brachii C = Flexor Carpi radialis E = Triceps brachii |
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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) |
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. |
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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 |
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. |
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The common interosseus artery is a branch of the _________ artery.
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The common interosseus artery (shown w/ probe) is a branch of the ULNAR artery.
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Note the branches of the common interosseus artery: The anterior & posterior interosseus artery.
Which of of its branches supplies the flexor muscle? |
The anterior interosseus supplies the deep layer of the forearm flexor muscles.
The posterior interosseus artery supplies the extensor group of the forearm muscles. |
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Identify (Umich practical)
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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. |
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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? |
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. |
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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. |
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.
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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? |
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 |
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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 _______________
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Posterior Interosseus Nerve
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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? |
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. |