Chapter 8 Flashcards
How many bones make up the upper limb
32 bones
pectoral girdle has how many bones
2 bones
Humorous
Longest and largest bone in the upper limb
-long bone
-contains two joints
Head
Contains the Glenoid cavity
Anatomical neck of the humorous
Site of Epiphyseal plate
Greater and lesser tubercle of humorous
Two projections
-rounded contours of the shoulder
Intertubercular sulcus/groove of humorous
Tendon of bicep branchii
-contains intertubicial glue
Surgical neck of humorous
Bone fracture site
Body of humorous
Main shaft or diaphysis
Deltoid tuberosity of humorous
Tendon of deltoid muscle
Capitulum of humorous
Head of radius
-allows for smooth gliding
Trochlea of humorous
Accommodates the coronoid process of the ulna
Coronoid fossa of humorous
Coronoid process of ulna
Olecranon fossa of humorous
Olecranon of the ulna
Radial fossa of humorous
Head of radius
Epicondyles of humorous
Tendons of the forearm for muscle attachment
Radius head articulates with the…..
Capitulum of humorous and radial notch of ulna
Ulnar notch
Styloid process of radius
Blunt bony part
-site of tendon attachment
Olecranon of ulna
Articulates with the Olecranon fossa
Pronoation equals
Radius and ulna crossed
Supination equals
Radius and ulna straight
Proximal carpals accronim
She Looks Too Pretty
Name the four proximal carpals
-scaphoid
-lunate
-triquentrum
-pisiform
Accronim for distal carpals
Try To Catch Her
Name the distal carpals
-trapezium
-trapezoid
-capitate
-hamate
accronim for the carpals
She Looks Too Pretty Try Too Catch Her
Supination
Radius and ulna are parallel
-palm is anterior
What muscle is involved in supination
The supinator
Supinator
Wraps around proximal radius and assists bicep branchii
Pronation
Radius and ulna are crossed over
-palm is posterior
What muscles aid in pronation
-pronation teres
-pronation quadratus
Flexors
Decreases joint angle
-anterior
What muscles are flexors
-biceps branchii
-branchialis
-brachioradialis
BBB
LONG Biceps branchii origin and intercept
O: tubercole of scapula
I: radial tuberosity
SHORT bicep branchii origin and intercept
O: coracoid of scapula
I: radial tuberosity
Branchialis origin and intercept
O: lateral border of scapula
I: ulnar tuberosity and Coronoid process of ulna
Brachioradialis origin and intercept
O: lateral border of distal end of humorous
I: styloid process of radius
Extensors
Returns angle to normal
-posterior
Ancounes origin and intercept
O: lateral epicondyle of humorous
I: Olecranon of ulna
Intercept of the triceps branchii
I: olecranon of ulna
Origin of the long triceps branchii
Tubercle of scapula
Origin of Lateral triceps branchii
Posterior surface of humorous above radial groove
Medial triceps branchii origin
Entire surface of the humorous to a groove
Radiocarpal joint
Wrist joint
-3 proximal carpal bones and ulnar collateral ligament
Three proximal carpal bones involved in the radiocarpal joint
TSL
-triquentrum
-scaphoid
-lunate
The elbow is what type of join
Hinge joint
Anterior forearm muscles
Extrinsic and flexor
-flexes the wrist at metacarpophalangeal joint and interphalangeal joint
Origin of anterior forearm muscles
Medial epicondyle of humorous
The intermediate anterior forearm muscles
-flexor digitorium
Flexor digitorium
Splits and inserts on the middle phalanges of fingers 2-5
-crosses over the wrist
-flexes above the joint
Insertion of the flexor digitorium
Middle phalanges fingers 2 to 5
Superficial anterior forearm muscles (list)
-pronator teres
-flexor carpi radialis
-palmaris longus
-flexor carpi ulnaris
Flexor carpi radialis
Flexes and adducts
-superficial anterior forearm muscle
Insertion of the flexor carpi radialis
Base metacarpal II and III
Palmaris longus
Flexes at wrist joint
-superficial anterior forearm muscle
Insertion of the palmaris longus
Flexor retinaculum and palmar aponeurosis
Flexor carpi ulnaris
Flexes at the wrist joint
-superficial anterior forearm muscles
Insertion of the flexor carpi ulnaris
Pisiform and hamate bones
-base of fifth metacarpal
What is the method to remember the superficial anterior forearm muscles
TRPU
Pointer finger- pronator teres
Middle finger- flexor carpi radialis
Index finger- palmaris longus
Little finger- flexor carpi ulnaris
Deep layer of anterior forearm muscles
-flexor policies longu
-flexor digitorium profunds
Flexor policies longus
-Flexes mp and ip joint of the thumb
-deep layer of the anterior forearm muscles
Insertion of flexor policis longus
Base of distal phalanx (thumb)
Flexor digitorium profundus
-flexes wrist in PIP and DIP of fingers 2 to 5
Deep layer of anterior forearm muscles
The posterior compartment of forearm muscles
Extensor muscles
-extend the wrist, MP and IP
Where do the posterior compartment forearm muscles insert
Lateral epicondyle
Superficial muscles of the posterior forearm muscles
-extensor carpi radialis longus
-extensor carpis radialis brevis
-extensor digitorium
-extensor digiti minimi
-extensor carpi ulnaris
Extensor carpi radialis longus
Extends and abducts hand at the wrist
-superficial posterior forearm muscle
Extensor carpi radialis brevis
Extends and abducts hand at wrist
-superficial posterior forearm muscle
Extensor digitorium
Extend wrist, MP, PIP, DIP, finger joint 2 to 5
-superficial posterior forearm muscle
Extensor digiti minimi
Innervates the fifth finger
Extensor carpi ulnaris
Extend the wrist and adduct the hand
Insertion of the Extensor carpi ulnaris
Base of metacarpal V
Insertion of the extensor digiti minimi
Extensor digitorium of fifth phalanx
Insertion of the extensor digitorium
Distal and middle phalanges fingers 2 to 5
Insertion of the extensor carpi radialis brevis
Base of metacarpal III
Insertion of the extensor carpi radialis longus
Base of metacarpal II
Deep layer of posterior forearm muscles (list)
-abductor policies longus
-extensor
-extensor pollicis longus
-extensor indicis
Abductor pollicis longus
Abducts joints of the thumb and hand
-deep layer of posterior forearm muscles
Extensor pollicis brevis
Extends MP joints of the thumb
-deep layer of posterior forearm muscles
Extensor pollicis longus
Innervates the joints of the thumb and abducts the hand
-deep layer of posterior forearm muscles
Extensor indicis
Extends MP, PIP, DIP of index finger
-deep layer of posterior forearm muscles
Insertion and origin of abductor pollicis longus
O: interousseus ligaments
I: lateral edge of metacarpal I
Insertion and origin of the extensor pollicis brevis
O: posterior surface of ulna
I: base of the first metacarpal of the thumb
Insertion and origin of extensor pollicis longus
O: mid-ulnar region
I: distal phalanx of the thumb
Insertion and origin of the extensor indicis
O: posterior surface of the Ulna and intraosseous membrane
I: tendon of the extensor of digitorium of index finger
What is the thenar group
Forms the thick and fleshy mass at the base of the thumb
What makes up the thenar group
-flexor pollicis brevis
-adductor pollicis brevis
-opponents pollicis
flexor pollicis brevis
Flexes thumb at carpometacarpal and metacarpophalangeal joint
-part of the thenar group
Origin and insertion of the flexor pollicis brevis
O: flexor retinaculum and trapezium
I: proximal phalanx of thumb
Origin and insertion of the adductor pollicis brevis
O: flexor retinaculum, scaphoid and trapezium
I: lateral side metacarpal I
Origin and insertion of the opponens pollicis
O: flexor retinaculum and trapezium
I: lateral side of metacarpal I
Opponens pollicis
Moves thumb across palm to meet any finger
-opposition
-thenar group
Adductor pollicis brevis
Adduct thumb at carpometacarpal joint
Hypothenar group
Forms a smaller fleshy mass at the bass of the little finger
Flexor ligitti minimi brevis
Flexes the little finger at carpometacarpal and MP joint
-hypothenar group
Origin and insertion of flexor ligitti minimi brevis
O: hamate bone, flexor retinaculum
I: proximal phalanx (little finger)
Abductor digiti minimi
Abducts and flexes little finger, MP joints
-hypothenar group
Origin and insertion abductor digiti minimi
O: pisiform bone, tendon of carpi ulnaris
I: proximal phalanx of pinky
Opponens digiti minimi
Moves the little finger across the palm to meet the thumb
-hypothenar group
Origin and insertion opponens digiti minimi
O: hamate bone, flexor retinaculum
I: metacarpal bone I
Midpalmar group
Occupies the space between thenar (thumb) and the hypothenar (pinky)
PIP stands for
Proximal interphalangual
DIP stands for
Distal interflingual
Two joints of the humerus
-glenohumerical joint
-trochlear notch