Theme 2 - The Musculoskeletal system Flashcards
What bones make up the pectoral girdle?
Scapula and clavicle
How many bones are there in the hand and what type?
Carpal x8
Metacarpal x5
Phalanges x14
Apply the following labels to the humerus
Greater tubercle Lesser tubercle Deltoid tuberosity Intertubular sulcus/bicipotal groove Lateral epicondyle Medial epicondyle
Apply the following labels to the scapula
Spine Superior angle Inferior angle Coracoid Acromion
Apply the following labels to the radius and ulna
Heads
Styliod processes
Tuberosities
Olecranon
What are the 5 joints of the wrist and hand?
radiocarpal midcarpal carpometacarpal metacarpalpharlageal interphalangeal
Excluding the wrist and hand what are the other main upper limb joints?
glenohumeral
elbow
From where do the flexor muscles of the wrist and digits originate?
Medial epicondyle
From where do the extensor muscles of the wrist and digits originate?
Lateral epicondyle
What are the two types of curves in the spine and at what point do they develop?
Kyphoses - Fetal
Lordoses - Childhood
What are the 3 ligaments in the spinal column?
Anterior longitudional ligament
Posterior longitudional ligament
Ligamentum flava
What ligament of the vertebral column resists hyperextension and what is the clinical significance of this ?
anterior longitudional
This is what’s injured during whiplash
What are the two components of the intervertebral discs ?
Nucleus pulposus
Annulus fibrosus
What are facet joints?
Joints between vertebral arches
What does the type of movement of the facet joints depend on?
Angle of the joint
What are the two divisions of the muscles of the back and what to they broadly do?
Intrinsic - posture vertebral comumn
extrinsic - move upper limbs and ribs
Origin of latissimus dorsi? 3
Thoracolumbar fascia
Spinous processes of lower 6 T
Insertion and function of lattissimus dorsi?
Bicipital groove - Adduction and medial rotation
Origin of trapezius? 2
Occipital protuberance
Spinous processes CVII - TXII
What are the 3 sections of Trapezius and what do they insert into?
Upper - Clavicle
Middle - Acromion
Lower - Spine of scapula
Function of trapezius?
rotates scapula
What muscles are responsible for elevating and retracting the scapula?
Levator scapulae
Rhomboids
What are the 3 layers of deep muscle in the back?
Splenius - most superficial (in neck)
Erector Spinae - main group
Multifidus - deepest
What are the 3 muscle blocks of erector spinae and from where do they originate?
Spinales -
Longissimus
Iliocostalis
Erector Spinae aponeurosis
What are the 3 muscle blocks of erector spinae and from where do they insert?
Spinales - spinous processes
Longissimus - transverse processes
Iliocostalis - ribs
From what do muiltifidous origionate and then insert?
Transverse processes to spinous processes
What is the nerve supply of the extrinsic and intrinsic muscles?
Extrinsic - anterior primary ramus
Intrinsic - posterior primary ramus
What stem artery supplies the upper limb?
Subclavian
What muscle divides the subclavian artery and into how many partys
Scalenus anterior -3
What comes of the 1st/2nd/3rd parts of the subclavian arteries?
1st - Thyrocervical - scapular
3rd - Dorsal scapular artery
Where does the subclavian artery end and what does it become?
As it crosses the border of the first rib
axillary artery
What divides the axillary artery and into how many parts?
Pec minor - 3
Where does the axillary artery end and what does it become?
Boreder of teres major - brachial artery
What significant 2 arteries emerges from the axillary artery and from what section?
3 - subscapular
ant/post circumflex humoral
What is at risk following a fracture to the neck of the humerus?
ant/post circumflex humoral artery
Where does the brachial artery divide and what does it become?
cubital fossa
radial and ulna artery
What branch of the brachial artery supplies the extensor muscles?
Profunda brachii
What nerve accompanies the profunda brachii artery in the spiral groove?
radial nerve
Two arteries run down the forearm, what are they and which way around?
Lateral - radial
Medial - ulnar
Through what anatomical feature does the radial artery pass and what does it form in the hand?
Snuff box
Deep palmer arch
What artery forms the superficial palmar arch
Ulnar
What is the venous return in the forearm and what does it drain into?
Deep veins - Paired veins, Venae comitantes
Superfical - Cephalic, basilic
Axillary vein
Label the superficial veins
Dorsal venous arch
basilic
cephalic
median cubital
Draw the brachial plexus including all supplies
Roots Trunks Divisions Cords Terminal Branches
Sketch the dermatomes of the upper limb?
C4. C5, C6, C7, C8, T1, T2
What does altered sensation in a dermatome region indicate?
damage to specific spinal nerve of spinal cord segment (i.e. proximal nerve injury)
Draw the cutaneous innervation by the terminal branches
axillary radial musculocutaneous medial cutaneous ulnar median
Label the ligaments of the shoulder joint.
Acromioclavicular Coracoacromial Glenohumeral - Superior - Middle - Inferior Coracoclavicular
Origin, insertion and nerve supply of deltoid
Spine of scapula + acromion + clavicle
Deltoid tuberosity
Axillary nerve
Label the elbow joint
Olecranon Capitulum Trochlea Trochlea notch Radial notch Head of radius
Label the ligamenets of the elbow
Radial collateralligament Annular ligament Ulnar collateral ligament Lateral epicondyle Medial epicondyle
Label the Cubital fossa
Lateral epicondyle Brachioradialis Pronator teres Lateral cutaneous nerve to the forearm Brachialis Brachial artery Median nerve
Thye median cubital vein is a branch of what vein?
Basilic
Label what 4 muscles origionate from the common felxor origin in the forearm?
Pronator teres
Flexor carpi radialis
Palmaris longus
Flexor carpi ulnaris
What clinical condition is associated with the common flexor origin in the forearm?
Golfers elbow - epicondylitis at the CFO
Label the intermediate layer of the forearm
Flexor digitorum superficialis
Label deel flexor layer of the forearm
Flexor pollicis longus
Flexor digitorum profundus
Label superficial extensor muscles
Extensor carpi radialis longus/brevis
Extensor digitorum
Extensor digiti minimi
Extensor carpi ulnaris
What clinical condition is assocciated with the common extensor origin?
Tennis elbow - epicondylitis ot CEO
What is the function of brachioraidilis
Flexion when half pronated - beer drinking
Label the deep layer extensor muscles
Supinator Abductor pollicis longus Extensor pollicis brevis Extensor pollicis longus Extensor indicis
What two muscles are involved in wrist abduction?
Flexor carpi radialis
- Extensor carpi radialis (longus + brevis)
What two muscles are involved adduction of the wrist?
Flexor carpi ulnaris
- Extensor carpi ulnaris
Label the muscles involved in pronation and supernation
Pronator teres
Pronator quadratus
Biceps brachii
Supinator
Label the contents of the carpal tunnel
Median nerve
Flexor policis longus
Flexor digitorum superficialis
Flexor digitorum profundus
What is carpal tunnel syndrome?
Compression of the median nerve
What does the median nerve supply?
Motor supply to anterior compartment except FCU/medial part of FDP
Sensory supply to lateral palm + d1, d2, d3, ½ d4
label the carpal bones
Lunate Scaphoid Triquetral/triquetrium Trapezium Trapezoid Capitate Hamate Pisiform
What is the most common fracture to the carpal bones?
Scaphiod fracture
Label the joints of the hand
Saddle joint Wrist (radiocarpal) Metacarpal/intercarpal Carpometacarpal Metacarpophalangeal Interphalangeal
What ligaments reinfoce the radiocarpal joint?
Ulnar and radial collateral ligaments (limits abduction/adduction)
Ligaments on the palmar/dorsal surfaces (limits extension/flexion)
What movement does the saddle joint enable
Opposition
What are the Condylar joints?
MCP
What are the hinge joints?
Proximal interphalangeal joints
distal interphalangeal joints
What muscle is the palmar aponeurosis continuous with?
palmaris longus
What are the flexor tendons in the hand,and which digits do they flex?
Flexor digitorum superficialis (d2-5)
Flexor digitorum profundus (d2-5)
Flexor pollicis longus (d1)
What prevents bowing of the hand tendons?
Flexor retinaculum
To where on the digit does the flexor digitorum profundus attach?
base of distal phalanx
To where on the digit does the flexor digitorum superficialis attach?
base of middle phalanx
What are the extensor tendons to digits 2-5?
Extensor digitorum
Extensor indicis
Extensor digiti minimi
What are the extensor tendons to digit 1?
Extensor pollicis longus
Extensor pollicis brevis
Abductor pollicis longus
Label the borders of the anatomical snuffbox
Abductor pollicis longus
Extensor pollicis brevis
Extensor pollicis longus
What artery passes through the anatomical snuffbox?
Radial
What bands of the extensor digitoris tendons insert into the middle and distal phalanges?
Medial band (into middle phalanx) Lateral band (into distal phalanx)
What muscles insert into the extensor hoods?
Lumbricals and interossei
What do the lumbrical muscles do?
Extend interphalangeal joints and flex MCP joints
- Precision grip (hold pen / pinch)