Upper Limbs Flashcards
What are the components of the upper limb?
Shoulder
Arm
Forearm
Hand
What does the Pectoral Girdles (AKA Shoulder girdles) do, what are they comprised of & held in place by?
Attach bones od upper limbs to axial skeleton
Comprised of clavicle & scapula
Held in place by muscle attachments
How does the clavicle lie?
Horizontally is superior & anterior part of thorax
Superior to 1st rib
Articulates w/ sternum & scapula
2 ends of the clavicle?
Acromial extremity & sternal extremity
What is the conoid tubercle?
Site of attachment for coracoclavicular ligament
Between clavicle and coracoid process of scapula
What does the shoulder articulate with?
Clavicle & Humerus
other bones anteriorly
The Lateral end of Scapula spine, is the high point of shoulder?
Acromion
This cavity accepts the head of the humerus and what joint does that form?
Glenoid cavity
Glenohumeral joint
The thin edge of the scapula which is closer to the vertebral column is the medial border of the scapula?
Vertebral border
Lateral border of the scapula is thick closer to arm is known as?
Axillary border
The medial and lateral borders of the scapula join at the?
Inferior angle
What is the suprascapular notch and what passes through it?
an indentation along superior border
suprascapular nerve passes through
This is a projection @ lateral end of superior border Tendons / muscles/ ligaments attach
(Crow’s beak)
Coracoid process
This fossa is superior to the Spine of the scapula? what attaches to it?
Supraspinous fossa
Supraspinatus muscle
This fossa is inferior to the spine of the scapula & what attaches to it?
infraspinous fossa
infraspinatus muscle
This is the anterior surface of the scapula and what attaches to it?
Subscapular fossa
subscapularis muscle
What ligament traverses the scapular notch and convert it into a foramen?
Superior transverse scapular ligament
What does the clavicle articulate with?
Manubrium of the sternum @ sternoclavicular joint
&
Scapula @ Acromioclavicular joint
What does the Scapula articulate with?
Clvical & Humerus @
Acromioclavicular joint &
Glenohumeral joint
What is the only true synovial joint that connects the pectoral girdle with the ribcage?
Sternoclavicular joint
What is the site of shoulder separation and what are the stablizing ligaments @ that joint
Acomioclavicular Joint
Acomioclavicular ligament
Coracoclavicular ligaments: Trapezoid lig., Conoid lig.
What is the logest bone in the upper extremety and where does it articulate?
Humerus
Articulates w/ scapula proximally & elbow distally
sites of insertion for muscles that move the humerus at the shoulder are known as?
Greater and Lesser Tubercles
where is the anatomical neck of the humerus located? What is attached @ this site?
between the head and tubercles
site of attachment of articular capsule
What inserts onto the greater turbercle of the humerus?
Supraspinatus
infraspinatus &
Teres minor
What inserts on the lesser tubercle of the humerus?
subscapularis
What does the Intertubercular Sulcus contain?
long head of biceps brachii
This is located in the middle of the humeral shaft and serves as an attachment of the deltoid muscle?
Deltiod tuberosity
On the distal end of the humerus, the anterior surface is known as (?) on the shaft and ends in the (?)
Sharp lateral supracondylar ridge
lateral epicondyle
The medial supracondylar ridge terminates where?
@ the medial epicondyle
This structure is rounded & its on the distal end of the humerus near the lateral epicondyle
Capitulum
this has an indentation and it is medial to the capitulum (spindal shaped)
Trochlea
This lies above the capitulum & contains part of radius during flexion?
radial fossa
this lies above the trochlea & recieves the ulnar coronoid process during flexion?
coroniod fossa
this is a large depression on the posterior distal end of the humerus that recieves the olecranon process of ulna when forearm extends?
Olecranon fossa
Which forearm bone forms the medial and lateral borders of the forearm?
Medial= Ulna
Lateral= Radius
What forms the prominence of the elbow and which bone of the forearm is it on?
Olecranon process
on the proximal portion of the Ulna
This is an anterior projection @ the proximal end of the Ulna
Coronoid process
this is a large curved area that forms the elbow joint, its formation is due to the olecron & coronoid process recieving the trochlea of the humerus
Trochlear notch
This is on the lateral side of the coronoid process and recieves the radius?
radial notch
This is inferior to the coronoid process and the bachialis muscle attaches here
ulnar tuberosity
Where is the head of the ulna located?
on the distal end of the ulna
What is the attachment point for the ulnar collateral ligament to the wrist?
the styloid process
What is the shape of the radial head and what does it articulate with/@?
Disc shaped @ proximal end
Articulates w/both capitulum of humerus & radial notch of Ulna
the roughened area that is inferior to radial neck & serves as attachment for tendons of biceps brachii muscle
radial tuberosity
This is on the distal end of the radius and proximal to the thumb, providing attachement for the brachioradialis muscle near the radial collateral ligament of wrist
Radial styloid proce
This is a broad, flat, fibrous connective tissue that joins shafts of Radius & Ulna providing attachment for some tendons of deep skeletal muscle of the forearm?
Interosseous membrane
where is the radioulnar joint located?
articulation of radial head w/ ulna’s radial notch is proximal to this
What does the distal end of the ulna articulate with?
articulates w/the ulnar notch of the radius @ distal radioulnar joint
What is the dorsal tubercle of the radius (AKA Lister’s tubercle)
a small prominence on dorsal aspect / distal end of radius, lateral to extensor pollicis longus tendon, serve as trochlea (pully)
What are the names of the 8 carpal bones (Proximal row 1st lateral to medial then distal row lateral to meadial)
“Stop Letting Those People Touch The Cadaver’s Hand”
Proximal row (L->M) Scaphoid Lunate Triquetrum Pisiform
Distal row (L->M) Trapezium Trapezoid Capitate Hamate
Muscles of the upper limb that attach to the thoracic cage are apart of the?
Thoracoappendicular muscles
Anterior Thoracoappendicular muscles include?
Pectoralis major & minor
Serratus anterior
subsclavian
The posterior Thoracoappendicular muscles includes?
Latissimus Dorsi
What is the origin / insertion / action / innervation of pectoralis major?
O: Clavcile, Sternum, costal cartilage
Insert: intertuberculr sulcus (groove) of humerus
Act: adducts & medially rotateshumerus @ shoulder
Inner: Latteral & Medial pectoral nerve
What is the origin / insertion / action / innervation of pectoralis minor?
O: Ribs 2-5
Insert: coracoid process of scapula
Acton abduct (protracts) scapula & rotates it dowards, elevatesribs during forced inhalation
Inner: medial pectoral nerve
