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Fall 2022 > Anatomy Lab Week 2 > Flashcards

Anatomy Lab Week 2 Flashcards

1
Q

Long head of biceps brachii m. Origin

A

Supraglenoid tubercle above the glenoid cavity of the scapula . Makes sharp turn at humeral head and continues course in intertubercular suculus.

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2
Q

Long head of biceps brachii m. Insertion

A

Unites with short head of biceps brachii at anterior side of humerus and attaches to radial tuberosity
Distal end inserts at deep fascia of forearm

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3
Q

Long head of biceps brachii m. Action

A

Abduction of arm, inward rotation, flexion, supination

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4
Q

Long head of biceps brachii m. Innvertation and blood supply

A 
Musculocutaneous nerve (C5-C6), branch of brachial plexus
Many arteries
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5
Q

Short head of biceps brachii m. Origin

A

Arises at apex of Coracoid process of scapula, partly blends with origin tendon of the coracobrachialis

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6
Q

Short head of biceps brachii m. Insertion

A

Attach to Anterior side of humerus to radial tuberosity with the long head. Distal part inserts deep into fascia of forearm

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7
Q

Short head of biceps brachii m. Action

A

Adduction of arm, flexion of arm, flexion of elbow, supination

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8
Q

Short head of biceps brachii m. Innervation and blood supply

A

Supplied by musculocutaneous nerve (C5-C6), branch of brachial plexus
Many arterial branches

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9
Q

Brachialis m. Origin

A

Distal half of anterior surface of humerus

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10
Q

Brachialis m. Insertion

A

Coronoid process of the ulna, tuberosity of ulna

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11
Q

Brachialis m. Action

A

Strong flexion of forearm at elbow joint

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12
Q

Brachialis m. Innervation and blood supply

A 
Musculocutaneous nerve (C5-C6), radial nerve (C7)
Brachial artery, radial recurrent artery
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13
Q

Brachioradialis m. Origin

A

Lateral supracondylar ridge of humerus, lateral inter muscular septum of arm

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14
Q

Brachioradialis m. Insertion

A

Proximal to styloid process of radius

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15
Q

Brachioradialis m. Action

A

BrachioRadialis follows the BR rule

It’s the Beer mug Raising muscle (flexes elbow, strongest when wrist is held for holding a beer mug)

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16
Q

Brachioradialis m. Innervation and blood supply

A 
Radial nerve (C5-C6)
Radial artery, radial recurrent arteries, radial collateral artery
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17
Q

Coracobrachialis m. Origin

A

Coracoid process of scapula

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18
Q

Coracobrachialis m. Insertion

A

Anteromedial surface of humeral shaft

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19
Q

Coracobrachialis m. Action

A

Adduction and flexion of arm at shoulder joint

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20
Q

Coracobrachialis m. Innervation and blood supply

A

Muscular branches of brachial artery

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21
Q

Pectoralis major m. Origin

A

Clavicular part: anterior surface of medial half of clavicle
Sternocostal part: anterior surface of sternum, costal cartilages of ribs 1-6
Abdominal part: anterior layer or rectus sheath

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22
Q

Pectoralis major m. Insertion

A

Crest of greater tubercle of humerus

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23
Q

Pectoralis major m. Action

A

Shoulder joint: arm adduction, arm internal rotation, arm flexion (clavicular head), arm extension (sternocostal head)
Scapulothoracic joint: draws scapula anterior inferiorly

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24
Q

Pectoralis major m. Innervation and blood supply

A

Lateral and medial pectoral nerves (C5-T1)

Pectoral branches of thoracoacromial artery, perforating branches of internal thoracic artery

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25
Pectoralis minor m. Origin
Anterior surface, costal cartilages of ribs 3-5. Located deeply to the pectoralis major
26
Pectoralis minor m. Insertion
Medial border and corocoid process of scapula
27
Pectoralis minor m. Action
Scapulothoracic joint: draws scapula anteroinferiorlly, stabilizes scapula on thoracic wall
28
Pectoralis minor m. Innervation and blood supply
Medial and lateral pectoral nerves (C5-T1) | Thoracoacromial a. (Pectoral and deltoid branches), superior thoracic a., lateral thoracic a.
29
Pronator teres m. Origin
``` Humeral head (superficial head) originates from the medial supracondylar ridge of humerus Ulnar head (deep head) originates from coronoid process of ulna. ```
30
Pronator Teres m. Insertion
Lateral surface of radius (distal to superior)
31
Pronator Teres m. Action
Pronation of forearm at the proximal radio ulnar joint, flexion of the forearm at the elbow joint
32
Pronator Teres m. Innervation and blood supply
``` Median nerve (C6, C7) Branches of brachial, radial and ulnar arteries ```
33
Serratus anterior m. Origin
Superior part: ribs 1-2, intercostal fossa Middle part: ribs 3-6 Inferior part: ribs 7-8/9
34
Serratus anterior m. Insertion
Superior part: anterior surface of scapula Middle part: arterial surface of medial border of scapula Inferior part: anterior surface of inferior angle and medial border of scapula
35
Serratus anterior m. Action
Scapulothoracic joint: draws scapula anterolaterally, suspends scapula in thoracic wall, rotates scapula (draws inferiorly angle laterally )
36
Serratus anterior m. Innervation and blood supply
Long thoracic nerve (C5-C7) SALT stands for Serratus Anterior-Long Thoracic & C5,6,7 raise your arms to heaven Superior and lateral thoracic arteries, Thoracodorsal artery branches
37
Supinator m. Origin
Lateral epicondyle of humerus, radial collateral ligament, annular ligament, supinator crest of ulna
38
Supinator m. Insertion
Lateral, posterior, anterior surfaces of proximal third of radius
39
Supinator m. Action
Proximal radio ulnar joint; forearm supination
40
Supinator m. Innervation and blood supply
Posterior interosseous nerve (C7,C8) | Radial recurrent artery, posterior interosseous artery, posterior interosseous recurrent artery
41
Intercostobrachial n. Origin
Second intercostal nerve
42
Intercostobrachial n. Course
Pierces the chest wall anterior to serratus anterior muscle
43
Intercostobrachial n. Supply
Skin of overlying second intercostal space, medial arm and forearm
44
Lateral cord of brachial plexus n. Origin
Anterior divisions of the superior and middle trunks of brachial plexus
45
Lateral cord of brachial plexus n. Course
Running inferolateral within the axilla, lateral to the Axillary artery
46
Lateral cord of brachial plexus n. Branches
Lateral pectoral, Musculocutaneous, and lateral portion of the median nerves
47
Lateral cord of brachial plexus n. Supply
Sensory Innervation for the skin of the lateral palmar digits and surfaces of the hand, and lateral skin of the forearm. Motor Innervation is to anterior compartment muscles of the arm, thenar muscles, and two lumbricals of the hand
48
Lateral antebrachial cutaneous n. Origin
Musculocutaneous nerve (C5-C6)
49
Lateral antebrachial cutaneous n. Course
Lateral inter muscular septum between the biceps and brachialis muscle
50
Lateral antebrachial cutaneous n. Supply
Skin of lateral forearm
51
Lateral pectoral n. Origin
Lateral cord of brachial plexus
52
Lateral pectoral n. Course
Runs anteriorly just superior and medial to the pectoralis minor muscle and pierces the pectoralis major muscle
53
Lateral pectoral n. Branches
Ansa pectoralis
54
Lateral pectoral n. Supply
Motor Innervation to the pectoralis minor and major muscles
55
Lateral root of median n. Origin
Lateral cord of brachial plexus
56
Lateral root of median n. Course
Combines with its corresponding medial root from the medial cord of brachial plexus to form to median nerve
57
Lateral root of median m. Supply
Motor Innervation to the muscles of anterior compartment of forearm and hand
58
Long thoracic n. Origin
C5,C6,C7 roots of brachial plexus
59
Long thoracic n. Course
Runs inferiorly down the lateral margin of the ribs
60
Long thoracic n. Supply
Motor Innervation to serratus anterior muscle
61
Lower Subscapular n. Origin
Posterior cord of brachial plexus
62
Lower Subscapular n. Course
Inferiorly along posterior walls of axilla
63
Lower Subscapular n. Supply
Motor Innervation to Teres major and Subscapularis muscles
64
Medial cord of brachial plexus n. Origin
Anterior division of inferior trunk of brachial plexus
65
Medially cord of brachial plexus n. Course
Runs inferolateral within the axilla, medial to the Axillary artery
66
Medial cord of brachial plexus n. Branches
Medial pectoral nerve, medial brachial cutaneous nerve, medial antebrachial cutaneous nerve, ulnar nerve, medial half of median nerve
67
Medial cord of brachial plexus n. Supply
Sensory Innervation for skin of palmar and medial surfaces of the hand, the tips of the digits, and anteromedial surfaces of the arm and forearm. Motor Innervation to muscles of the hand, anterior compartment muscles of forearm, and pectoralis muscle
68
Medial cutaneous n. Of arm origin
Medial cord of brachial plexus
69
Medial cutaneous n. Of arm course
Runs inferiorly along the medial wall of arm
70
Medial cutaneous n. Of arm supply
Sensory Innervation to skin on medial surface of arm
71
Medial cutaneous n. Of forearm origin
Medial cord of brachial plexus
72
Medial cutaneous n. Of forearm course
Runs inferiorly along medial wall of arm
73
Medial cutaneous n. Of forearm supply
Sensory Innervation to skin on anterior surface of arm, ,medial surface of the forearm
74
Medial pectoral n. Origin
Medial nerve of brachial plexus
75
Medial pectoral n. Course
Runs anteriorly into the pectoralis minor, and then the pectoralis major muscles
76
Medial pectoral n. Supply
Motor Innervation to pectoralis minor and major muscles
77
Medial root of median n. Origin
Medial cord of brachial plexus
78
Medial root of median n. Course
Combines with corresponding lateral root from lateral cord of brachial plexus to form median nerve
79
Medial root of median n. Supply
Motor Innervation to anterior compartment of forearm and hand
80
Median n. Origin
Lateral and medial cords of brachial plexus
81
Median n. Course
In the arm and cubical fossa, travels adjacent to the brachial artery. In forearm, posterior to flexor digitorum superficialis and anterior to flexor digitorum Profundus. Accompanied by anterior interosseous artery
82
Median n. Branches
Muscular branches to Pronator Teres, flexor carpi radialis, palmaris longus, and flexor digitorum superficialis, vasomotor nerve to brachial artery, articular branches to elbow and proximal radioulnar joints , anterior interosseous nerve, palmar cutaneous branches, medial and lateral divisions
83
Medial n. Branches supply
Sensory and motor Innervation to wrist, elbow and inter carpal joints, the anterior muscles of forearm, muscles of digits, skin of the palm, and thenar eminence
84
Musculocutaneous n. Origin
Lateral cord of brachial plexus (C5-C7)
85
Musculocutaneous n, course
Accompanies third party of Axillary artery in lower part of axilla, pierces coracobrachialis to enter front of arm and descends between biceps brachii and brachialis muscle
86
Musculocutaneous n. Branches
Lateral antebrachial cutaneous nerve, muscular and articular branches
87
Musculocutaneous n. Supply
Motor Innervation to flexor muscles of arm, sensory Innervation to skin of lateral forearm, elbow joint
88
Posterior cord of brachial plexus n. Origin
Posterior divisions of superior, inferior, and middle trunks of brachial plexus
89
Posterior cord of brachial plexus n. Course
Runs inferolateral within the axilla, posterior to Axillary artery
90
Posterior cord of brachial plexus n. Branches
Upper Subscapular, Thoracodorsal, lower Subscapular, Axillary and radial nerves
91
Posterior cord of brachial plexus n. Supply
Sensory Innervation for skin of posterolateral of hand, and posterior and lateral skin of arm and forearm. Motor Innervation to posterior compartment muscles of arm and forearm and muscles of posterior Axillary region
92
Ulnar n. Origin
Medial cord of brachial plexus (C7-T1)
93
Ulnar n. Course
Descends on medial side of brachial artery, pierces inter muscular septum to enter posterior arm. Passes behind medial epicondyle of humerus to descend in the forearm. Enters the palmar aspect of the hand
94
Ulnar n. Branches
Muscular and cutaneous branches (palmar cutaneous branch, dorsal cutaneous branch, and digital branches) and superficial and deep branches
95
Ulnar n. Supply
Medial half of flexor digitorum profundus and flexor carpi ulnaris, palmris brevis, and most intrinsic hand muscles, skin of medial palmar and dorsal aspect of the hand, and medial one and a half digits
96
Upper Subscapular n. Origin
Posterior cord of brachial plexus
97
Upper Subscapular n. Course
Runs medially in posterior axilla toward Subscapularis muscle
98
Upper Subscapular n. Supply
Motor innveration to Subscapular muscle
99
Superior thoracic a. Origin
Axillary artery | First part of Axillary a.
100
Axillary a. Arterial Parts
First part- superior thoracic a. Second part- thoracoacromial a., lateral thoracic a. Third part- Subscapular a. (Circumflex scapular a. And Thoracodorsal a.), posterior circumflex a., anterior humeral a.
101
Superior thoracic a. Course
Anteromedially, between pectoralis minor and major muscles
102
Superior thoracic a. Supply
Pectoralis major and minor muscles, serratus anterior and intercostal muscles
103
Thoracoacromial a. Origin
Axillary after (second part)
104
Thoracoacromial a. Course
Short course through clavipectoral fascia
105
Thoracoacromial a. Branches
Pectoral, acromial, clavicular, and deltoid branches
106
Thoracoacromial a. Supplies
Clavicular and acromial part of deltoid muscle, inferior clavicle, acromion, and skin overlying the pectoral region
107
Lateral thoracic a. Origin
Axillary a.
108
Lateral thoracic a. Course
Inferiorly along lateral thoracic wall
109
Lateral thoracic a. Branches
Lateral mammary branches
110
Lateral thoracic a. Supplies
Serratus anterior, pectoral major and minor, and Subscapularis muscles, Axillary lymph nodes
111
Circumflex scapular a. Origin
Subscapular artery
112
Circumflex scapular a. Course
Along lateral scapular border into infraspinous fossa
113
Circumflex scapular a. Supplies
Posterior portion of Teres major and minor muscles, deltoid, long head of triceps brachii, scapula, skin overlying scapula
114
Subscapular a. Origin
Axillary artery (third part)
115
Subscapular a. Course
Inferior border of Subscapularis muscle, to inferior scapular angle
116
Subscapular a. Branches
Circumflex scapular and Thoracodorsal arteries
117
Subscapular a. Supplies
Scapular and deltoid regions
118
Anterior circumflex humeral a. Origin
Axillary artery (third part)
119
Anterior circumflex humeral a. Course
Laterally across the anterior surface of the humerus, at the level of the surgical neck, deep to the coracobrachialis and short head of the biceps brachii muscles
120
Anterior circumflex humeral a. Branches
Anastomoses with the posterior circumflex humeral a.
121
Anterior circumflex humeral a. Supplies
Deltoid, biceps brachii, coracobrachialis muscles, glenohumeral joint, head of humerus, cutaneous supply to area overlying proximal humerus anteriorly,
122
Brachial a. Arterial parts
Deep brachial a./profunda brachii a., inferior ulnar collateral a., radial a., superior ulnar collateral a., ulnar a.
123
Inferior ulnar collateral a. Origin
Brachial artery
124
Inferior ulnar collateral a. Course
Distally from the anterior to posterior aspect of humerus
125
Inferior ulnar collateral a. Supplies
Elbow joint
126
Radial a. Origin
Brachial artery
127
Radial a. Course
Distally, deep to the brachialradialis muscle along the anterior forearm, to the dorsal aspect of the hand.
128
Radial a. Branches
Radial recurrent artery, dorsal carpal, superficial Palmer, and Palmer carpal branches, deep Palmer arch, and princeps pollisis artery
129
Radial a. Supplies
Muscles in lateral aspect of anterior forearm, superficial radial nerve, elbow joint, and hand
130
Superior ulnar collateral a. Origin
Brachial artery
131
Superior ulnar collateral a. Course
Distally along with ulnar n. Along medial aspect of arm
132
Superior ulnar collateral a. Supplied
Medial head of triceps brachii muscle, elbow joint, and cutaneous supply to the medial aspect of the arm
133
Ulnar a. Origin
Brachial artery
134
Ulnar a. Course
Distally and medially to the flexor digitorum superficialis and flexor digitorum profundus muscles. At distal one third of forearm it becomes more superficial and accompanies the ulnar n. Enters the hand via guyons canal
135
Ulnar a. Branches
Anterior and posterior ulnar recurrent arteries, common interosseous artery, and muscular branches. Palmar and dorsal carpal branches in hand, carpal arches, deep and superficial palmar arches
136
Ulnar a. supplies
Elbow joint, interosseous membrane, radius and ulna. Pronator teres, flexor digitorum superficialis, flexor carpi ulnaris, flexor digitorum profundus muscles
137
Radial recurrent a. Origin
Radial artery
138
Radial recurrent a. Course
Superiorly to elbow joint
139
Radial recurrent a. Supplies
Muscles adjacent to elbow joint
140
Subclavian a. Origin
Aortic arch (left) or brachii cephalon trunk (right)
141
Subclavian a.course
Left- ascends in superior mediastinum and enter neck Right- arises in neck Both course laterally over the neck and over superior surface of first rib
142
Subclavian a. Branches
Vertebral, internal thoracic, dorsal scapular arteries, Costocervical and thyrocervical trunks
143
Subclavian a. Supplies
Thoracic wall, spinal cord, neck, brain, meninges, upper limb
144
Axillary v. Origin
Brachial veins
145
Axillary v. Course
Superiorly, from inferior border of Teres major, to external border of first rib
146
Axillary v. Drainage
Upper limb, scapular, pectoral regions
147
Basilic v. Origin
Medial aspect dorsal venous network
148
Basilic v course
Superiorly along medial aspect of arm and forearm
149
Basilic v. Drainage
Hand, forearm, arm
150
Cephalic v. Origin
Lateral aspect of dorsal venous network of the hand
151
Cephalic v. Course
Superiorly along anterolateral forearm and arm
152
Cephalic v. Drainage
Hand, forearm, arm
153
Median cubital v, origin
Cephalic vein
154
Median cubital v. Course
Superomedially to Basilic vein
155
Median cubital v. Drainage
Collateral drainage from forearm
156
Breast location
Anterior thoracic wall
157
Breast arterial supply
Medial mammary branches of perforating branches of internal thoracic artery and lateral mammary branches of lateral thoracic arteries (third part of Axillary artery )
158
Breast venous drainage
Medial mammary branches of internal thoracic and lateral mammary branches of lateral thoracic veins
159
Breast Innervation
Lateral and anterior cutaneous branches of the 4th to 6th anterior rami or the thoracic spinal nerves
160
Breast lymphatic drainage
Axillary (75%), sub clavicular, and parasternal lymph nodes
161
Areola
Located at level of 4th intercostal space at the mid clavicular line. Specialized arrangement of sebaceous glands protects skin of breast from irritation and cracking during breast feeding.
162
Lactiferous ducts
Responsible for transport of milk produced in lobules of the mammary glands to the nipple
163
Lactiferous sinus
Expansion of the terminal end of each Lactiferous duct
164
Nipple
Located at level of 4th intercostal space at mid clavicular line. Skin sits on areolar smooth muscle fibers arranged radially and circularly
165
Suspensory ligaments of breast
Fibrous strands of connective tissue that extends from dermis of the skin to deep fascia forming bed of breast. Help support the breast
166
Deltopectoral groove origin
Located superolateral aspect of the pectoral region and deltoid muscle
167
Deltopectoral groove course
Runs from superomedial to inferolateral and contains Cephalic vein which dives deep to pierce the clavipectoral fascia and enter the Axillary vein
168
Deltopectoral triangle
Formed between the clavicle above, lateral border or pectoralis major medially and the medial border of the deltoid laterally . Contains investing layers of clavipectoral fascia and the Cephalic vein on its roof which is pierces
169
Costal margin
Lower edge of the thorax formed by the bottom edge of the ribcage (7th rib to 10th rib). Diaphragm attaches along
170
Capitulum of humerus
Smooth convex projection found on inferolateral aspect of condyle of humerus. Lateral of the two articular projections, the other being the trochlea of humerus. Separated from each other by a shallow groove Articulates with head of the radius , forming humeroradial joint, contributing to formation of elbow joint
171
Radial tuberosity
Oval,elevated area found on anteromedial aspect or proximal part of radius. Located inferior to neck of radius Insertion site for biceps brachii muscle
172
Subscapular fossa
Concave area that inhabits almost entire costal region of scapula . Ridges that travel in inferomedial direction along the fossa. Origin site for Subscapularis muscle
173
Sternum location and bone type
Thoracic cage | Flat bone
174
Sternum articulates with
Clavicle and costal cartilages
175
Sternum arterial supply
Perforating branches of internal thoracic arteries
176
Olecranon process
Large superior projection and proximal part of ulna. Curves anteriorly on top, accommodating Olecranon fossa of humerus during forearm extension Provides origin site for ulnar head of flexor carpi ulnaris , insertion site for anconeous muscle and tendon of triceps brachii muscle, attachment site for ulnar collateral ligament

Fall 2022 (15 decks)

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