Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Anatomy 3 oral > A12 - Art. carpi and its muscles > Flashcards

A12 - Art. carpi and its muscles Flashcards

1
Q

Carpus

List the muscles of the carpus

A
  1. ​M. extensor carpi radialis
  2. M. extensor carpi ulnaris
  3. M. flexor carpi radialis
  4. M. flexor carpi ulnaris
    • ​Caput humerale
    • Caput ulnare

Prontaros:

  1. ​M. pronator teres (ø eq)
  2. M. pronator quadratus (ca)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Carpus

M. extensor carpi radialis

A
  • Origin: Crista supracondylaris lateralis of humerus
  • Insertion: Mc. II-III. (dorsal surface of metacarpals’ bases)
  • Action: E_xtensor of carpal joint_
  • Innervation: N. radialis
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Carpus

M. extensor carpi ulnaris

A
  • Origin: Epicondylus lateralis of humerus
  • Insertion:
    • Lateral aspect of Mc. V. base
    • Also attaches with a tendon to accessory carpal bone
  • Action:
    • Supports carpus when extended to bear weight
    • Flexion, abduction and lateral rotation of carpal joint since its attachment to os carpi accessorium
  • Innervation: N. radialis
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Carpus

M. flexor carpi radialis

A
  • Origin: Epicondylus medialis of humerus
  • Insertion: Mc. II-III. (palmar surface of metacarpals’ base)
  • Action: Flexes carpus
  • Innervation: N. medianus
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Carpus

M. flexor carpi ulnaris

A
  • Origin:
    • ​Caput humerale: Epicondylus medialis of humerus
    • Caput ulnare: Proximal end of ulna
  • Insertion: Accessory carpal bone
  • Action: Flexes carpus
  • Innervation: N. radialis
  • Eq: not divided, two heads unite
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

M. pronator teres

A

Ø eq (reduced to a ligament in ungulates)

  • Origin: Epicondylus medialis of humerus
  • Insertion: Craniomedial surface of the proximal radius
  • Action: Pronation (medial rotation)
  • Innervation: N. medianus
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

M. pronator quadratus

A

Ca

  • Attachment: apposed surface of radius and ulna, covers spatium interosseum antebrachii
  • Action: Pronation
  • Innervation: N. medianus
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Carpus

  1. Give the bones of the carpus
  2. Give the interspecies differences
  3. Draw carpus and metacarpus
A
  • Proximal row - antebrachial row:
    1. Os carpi radiale (medially)
    2. Os carpi intermedium (below radius and ulna)
    3. Os carpi ulae (just distal to ulna, lateral)
    4. Os carpi accessorium (caud. on the lateral side)
  • Distal row - metacarpeal row:
    1. Os carpale primum (most medial)
    2. Os carpale secundum
    3. Os carpale tertium
    4. Os carpale quartum (most lateral)

Interspecis differences:

  • Su: 8, full set
  • Eq: 7-8, often missing C1
  • Ru: 6
    • C1 is missing
    • C2 + C3 is fused
  • Ca: 7 radiale, intermedium = intermedioradiale
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Carpus

Art. carpi

A
  • Art. composita
  • Monoaxial
    • ​Movement: flexion - extension
  • 3 joint cavities, each with its own separate synovial membrane
  • The whole carpus acts as a hinge joint, but the single joint surfaces allow different ranges of movement
  • Divied into:
    • Art. antebrachiocarpea (Between radius, ulna and proximal row of carpal bones)
    • Art. intercarpeae (Between carpal bones of one row)
    • Art. mediocarpea (Between proximal and distal rows of carpal bones)
    • Art. carpometacarpeae (Between base of metacarpal bones)
    • Art. ossis carpi accessorii (Between os carpi accessorium and os carpi ulnare, Car: also ulna, eq: radius)

Ligaments of art. carpi

  • Lig. collaterale carpi laterale
    • ​Processus styloideus ulnae → os carpi ulnare (car), and os carpale IV and metacarpus (un)
  • Lig. collaterale carpi mediale
    • ​Processus styloideus radii→ os carpi intermedioradiale (car), also os carpale II and metacarpus (un)

Fascia carpi:

  • Retinaculum flexorium
    • Thickening of the deep carpal fascia palmarly
    • Fibers runs transverse to fix the flexor muscle tendons
  • Retinaculum extensorium
    • ​Thickening of the deep carpal fascia dorsally
    • Fibers runs transverse to fix the the extensor muscles
  • Canalis carpi
    • ​Canal between proximal row of carpal bones → retinaculum flexorium
    • Through the carpal canal run the tendons of the digital flexors (within the vagina synovialis communis musculi flexorii), vessels, nerves
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Carpus

Art. antebraciocarpea

A
  • ​Ca: ellipsoideal joint (biaxial)
  • Un: hinge joint (monoaxial)
  • Ru: cochlear joint (monoaxial)
  • Between:
    • Radius
    • Ulna
    • Proximal row of carpal bones
  • Movement:
    • Flexion - extension
    • Ca: abduction - adduction
  • 2 joints:
    • Art. radiocarpea (radius → proximal carpal row)
    • Art. ulnocarpea (ulna → proximal carpal row)

Structures:

  • Art. radiocarpea
  • Art. ulnocarpea
  • Capsula articularis
  • Lig. radiocarpeum dorsale (ø eq)
  • Lig. radiocarpeum palmare
  • Lig. ulnocarpeum palmare
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Carpus

Artt. interocarpeae

A
  • Ampharthosis
  • Hinge joint (monoaxial)
  • Joints between carpal bones of one row

Structures:

  • Ligg. intercarpea dorsalia
  • Ligg. intercarpea palmaria
  • Ligg. intercarpea interossea
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Carpus

Art. mediocarpea

A
  • Diarthrosis
  • Hinge joint (monoaxial)
  • Between proximal and distal rows of carpal bones

Structures:

  • Capsula articularis
  • Lig. carpi radiatum (Palmar fibers from os carpale III)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Carpus

Artt. carpometacarpeae

A
  • Diarthrosis
  • Plane joint (monoaxial)
  • Between the bases of the metacarpal bones

Structures:

  • Capsulae articulares
  • Ligg. carpometacarpea dorsalia
  • Ligg. carpometacarpea palmaria
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Carpus

Art. ossis carpi accessorii

A
  • Joint between os carpi accessorium and other bones

Structures:

  • Capsula articularis
  • Lig. accessoriulnare (os carpi accessorium → ulna (eq: radius))
  • Lig. accessoricarpoulnare (os carpi accessorium → os carpi ulnare)
  • Lig. accessorioquartale (os carpi accessorium → os carpale IV)
  • Lig. accessorimetacarpeum ( os carpi accessorium → metacerpus)
  • Canalis carpi (between the proximal row of carpal bones and retinaculum flexorium)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Carpus

Draw art. carpi (eq, ca)

A
  • ​Collateral ligaments
    • ​Lig. collaterale carpi laterale
    • Lig. collaterale carpi mediale
  • Lig. antebrachicarpea
    • ​Lig. radiocarpeum dorsale (ca, ru)
    • Lig. radiocarpeum palmare
    • Lig. ulnocarpale palmare (pervent hyperextension)​
    • Lig. carpi radiatum
  • Ligg. intercarpea
    • ​Ligg. intercarpea dorsalia (ø eq)
    • Ligg. intercarpea palmare
    • Ligg. intercarea interossea
  • Ligg. carpometacarpea (binds carpal bones to metacarpal bones)
    • ​Ligg. carpometacarpea dorsalis
    • Ligg. carpometacarpea palmaria
  • Ligg. of accessory carpal bone
    • ​Ligg. accessoriulnare
    • Lig. accessoricarpoulnare (from Ca to Cu)
    • Lig. accessorimetacarpeum (to the outermost metacarpal bone)
    • Lig. accessorioquartale (eq, ru: attaches on C4)
  • Retinaculum flexorium ( arise on accessory carpal bone)
  • Retinaculum extensorium
How well did you know this?
1
Not at all
2
3
4
5
Perfectly

Anatomy 3 oral (122 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions