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Gross Anatomy
Lecture 8
52
Anatomy
Graduate
02/10/2010

Additional Anatomy Flashcards

 


 

Cards

Term
Pectoral Girdle
Definition

Attachment for the upper limb

 

Attachment to axial skeleton at the sternoclavicular joint

Term
Clavicle
Definition

Origins for Pectoralis Major, Deltoid & Subclavius

Term
Sternum
Definition

Anterior attachment for the ribs (costal cartilages) at sternocostal joints

 

1. Manubrium

2. Body/Gladiolus

3. Xiphoid Process

 

 

Term
Manubrium of Sternum
Definition

Jugular notch

Clavicular notch

Sternoclavicular joint

 

articulates with rib 1 (synchrondrosis)

body of sternum (symphysis)

 

Term
Sternal Angle (angle of Louis)
Definition

Junction of manubrium and body

articulation with rib 2

Term
Xiphoid Process
Definition
danger of liver laceration
Term
Xiphisternal Junction
Definition

Symphysis type

articulation with rib 7

Term
Ribs (12 pairs & costal cartilages)
Definition

7 pairs vertebrosternal

3 pairs vertebrochondral

2 pairs vertebral

 

Term
Typical Ribs (3-10)
Definition

Head articulates with vertebral bodies (costovertebral joints)

 

Tubercle with transverse process (costotransverse joint)

 

Shaft features angle and costal groove

Term
Atypical Rib #1
Definition

Shortest

 

Grooves for subclavian a&v

 

Scalene tubercle

Term
Atypical Rib #2
Definition
Tuberosity for serratus anterior
Term

Atypical Rib #11 & 12

Definition

No tubercle

 

Reduced costal cartilage

 

Single facet on head

Term
Deltoid
Definition
Innervated by axillary nerve C5-C6
Term

Pectoralis Major actions

 

Definition
Adduction and medical rotation of humerus
Term

Pectoralis Major attachments

Definition

Clavicle (clavicular head)

Sternum & sixth cartilage (Sternalcostal head)

 

to the lateral edge of intertubercular sulcus of humerus

Term

Pectoralis Major Innervation

Definition

Lateral pectoral nerve C5-C7 (both heads)

 

Medial pectoral nerve C8-T1 (sternocostal head)

 

of lateral and medial cords, respectively of brachial plexus

Term

Pectoralis Minor attachments

 

 

 

(Landmarks for parts of axillary artery)

Definition
Ribs 3, 4, 5 to coracoid process of scapula
Term
Pectoralis Minor innervation
Definition
Medial pectoral nerve C8-T1 from medial cord of BP
Term
Pectoralis Minor actions
Definition
Depression of scapula
Term
Serratus Anterior attachments
Definition
First 8 or 9 ribs to anterior side of medial border of scapula
Term
Serratus Anterior Innervation
Definition
Long thoracic nerve C5-C7
Term
Serratus Anterior Actions
Definition

Protraction of scapula

 

Secures of scapula to thoracic cage

Term

Subclavian Artery

Definition

From brachiocephalic artery (right) or arch of aorta (left)

 

Deep to scalenus anterior

 

Continues as axillary artery at lateral border of rib 1

Term
Major Branches of Subclavian Artery
Definition

1. Thyrocervical trunk

2. Vertebral artery

3.Internal costal artery

4. Costocervical trunk

Term
Thyrocervical Trunk
Definition
Source of inferior hyoid, transverse cervical artery, suprascapular artery
Term
Vertebral Artery
Definition
Ascends cervical plane via transverse foramina to form vertebrobasilar system within cranium
Term
Costocervical trunk
Definition
To upper intercostal spaces and deep posterior neck
Term

Axillary Artery (First part)

Definition

From lateral border of rib 1 to medial border of pectoralis minor

 

Only branch is supreme thoracic artery

Term

Axillary Artery (Second Part)

Definition

Behind pectoralis minor

 

thoracoacromial trunk (medially)

lateral thoracic artery (laterally)

Term
Axillary Artery (Third Part)
Definition

From lateral border of pectoralis minor to inferior border of teres major

 

Produces subscapular artery and 2 circumflex humoral artery

Term
Subscapular Artery
Definition

splits into circumflex scapular and thoracosdorsal artery

Term
Brachial Artery
Definition
  • beginning at inferior border of teres major
  • continuation of axillary artery into upper limb
Term
Cephalic Vein
Definition

Lateral superficial vein of upper limb

 

Traverses deltopectoral triangle

 

Passes deep to enter axillary vein

Term

Borders of Axilla:

 

Apex

Definition

Bounded anteriorly by clavicle

 

Bounded posteriorly by superior border of scapula

 

Bounded medially by rib 1

Term

Borders of Axilla:

 

Floor

Definition

(armpit)

 

Axillary fascia & skin

Term

Borders of Axilla:

 

Anterior Wall

Definition

Pectoralis Major

Pectoralis Minor

Term

Borders of Axilla:

 

Posterior Wall

Definition

Latissimus Dorsi

Teres Major

Subscapularis

Term

Borders of Axilla:

 

Medial Wall

Definition
Serratus anterior and ribs
Term

Borders of Axilla:

 

Lateral Wall

Definition

Meeting point of anterior and posterior folds at intertubercular sulcus of humerus

Term
Contents of Axilla
Definition

fat

axillary artery

axillary vein

lymph nodes

cords of brachial plexus

long head of biceps brachii

short heads of biceps brachii

coracobrachialis

Term

Roots of Brachial Plexus

 

 

 

Definition

anterior primary rami of C5-T1

 

 

Branches:

Dorsal Scapular Nerve C4-C5 (rhomboids)

Long Thoracic Nerve C5-C7 (serratus anterior)

Term

Trunks of Brachial Plexus

Definition

Upper (C5-C6)

Middle (C7)

Lower (C8-T1)

 

Branches:

suprascapular nerve C4-C6 (upper trunk)

nerve to subclavius C5-C6 (upper trunk)

 

 

Term
Divisions
Definition
Each trunk splits into an anterior and posterior division
Term

Lateral Cord of BP

 

 

Definition

From anterior divisions of upper and middle trunks

 

Source of lateral pectoral nerve C5-C7

Term
Medial Cord of BP
Definition

From anterior division of lower trunk

 

Source of medial pectoral nerve C8-T1

 

Medial brachial cutaneous & Medial antebrachial cutaneous nerves C8-T1

Term

Posterior Cord of BP

Definition

From posterior divisions of all trunks

 

1. Upper Subscapular Nerve C5-C7

2. Thoracodorsal Nerve C6-C8

3. Lower Subscapular Nerve C5-C7

Term
Terminal Branches
Definition

Musculocutaneous Nerve C5-C7

Median Nerve C5-T1

Ulnar Nerve C8-T1

Axillary Nerve C5-C6

Radial Nerve C5-T1

 

 

Term
Musculocutaneous nerve C5-C7
Definition

ends lateral cord

 

supplies anterior compartment of arm

 

cutaneous to lateral arm

Term
Median Nerve C5-T1
Definition

Receives "head" from lateral and medial cords

 

main nerve supply to anterior forearm mm.

 

motory & sensory to hand

Term
Ulnar Nerve C8-T1
Definition

Ends medial cord

Motor to anterior forearm and hand

Sensory to hand

Term
Axillary Nerve C5-C6
Definition
From posterior cord of BP to deltoid & teres minor
Term
Radial Nerve C5-T1
Definition

From posterior cord of BP to posterior compartments of upper limb

 

Sensory to wrist and hand

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