Anatomy: The Upper LImb

Question 1

humeroulnar: anteriorly, the _____ of the humerus articulates with the ___________ of the ulna

Answer 1

trochlea, trochlear notch

Question 2

posteriorly, the olecranon articulates with the _________________

Answer 2

olecranon fossa (in full extension)

Question 3

humeroradial: the capitulum articulates with the _______

Answer 3

fovea

Question 4

the superior surface of the head of the radius is slightly cup shaped - called the _______

Answer 4

fovea

Question 5

the humeroulnar and humeroradial articulations are ______ joints

Answer 5

hinge

Question 6

Olecranon bursitis AKA ____________

Answer 6

student’s elbow

Question 7

The proximal radioulnar joint is a ______ joint

Answer 7

pivot (round head of radius pivots around the radial notch of the ulna)

Question 8

what movements happen at the proximal radioulnar joint?

Answer 8

pronation, supination

Question 9

a u-shaped ligament that runs from the anterior surface of the radial notch around the head of the radius to the posterior surface of the radial notch – holds the head of the radius in place:

Answer 9

annular ligament (preschool kids can get a ‘slipped elbow’ from forceful traction of the pronated forearm)

Question 10

allows for movement of the radius around a relatively fixed ulna:

Answer 10

The distal radioulnar joint

Question 11

The distal radioulnar joint is a _____ joint

Answer 11

pivot

Question 12

the ulna does not directly articulate with the ______ bones

Answer 12

carpal

Question 13

Coracobrachialis attachments:

Answer 13

superior/proximal attachment: coracoid process

inferior/distal attachment: middle, medial humerus

Question 14

Coracobrachialis actions:

Answer 14

action: G-H adduction (horizontal in particular)
action: G-H flexion (weak)

Question 15

Biceps brachii attachments:

Answer 15

superior/proximal attachment (long head): supraglenoid tubercle
superior/proximal attachment (short head): coracoid process
inferior/distal attachment: radial tuberosity, bicipital aponeurosis

Question 16

Biceps brachii actions:

Answer 16

• G-H flexion
• Elbow flexion (in supination)
• Forearm supination (proximal and distal radioulnar joints)

Question 17

Brachialis attachments and action:

Answer 17

superior/proximal attachment: anterior distal ½ of the humerus
inferior/distal attachment: ulnar tuberosity, coronoid process
action: elbow flexion (prime mover)

Question 18

Triceps brachii attachments:

Answer 18

*proximal attachment:
(long head) infraglenoid tubercle
(lateral head) posterior proximal humerus
(medial head) posterior distal humerus

*distal attachment:
olecranon process

Question 19

Triceps brachii actions:

Answer 19

action (long head): G-H extension

action (all heads): elbow extension

Question 20

Anconeus attachments and actions:

Answer 20

superior/proximal attachment: lateral epicondyle
inferior/distal attachment: olecranon process
action: elbow extension (assists triceps)

Question 21

Carpal bones proximal row, (lateral to medial):

Answer 21

1. scaphoid
2. lunate (moon shaped) (most commonly dislocated)
3. triquetrum (pyramid shaped)
4. pisiform (pea-shaped: Latin: pisum (pea) – easily palpable

Question 22

Carpal bones distal row (from lateral to medial):

Answer 22

1. trapezium (including its tubercle)
2. trapezoid
3. capitate (has a rounded head: Latin: caput (head))
4. hamate – easily identified by the anterior projection called the hook of the hamate

Question 23

Starting with the proximal row and moving lateral to medial: Some lovers try positions that they can’t handle

Answer 23

SLTP

TTCH

Question 24

the flexor retinaculum attaches laterally to the tubercles of the _______ and ________ and medially to the hook of the ______ and _______

Answer 24

scaphoid, trapezium : hamate, pisiform

Question 25

the retinaculum forms a tunnel called the ____________ through which structures pass

Answer 25

carpal tunnel

Question 26

The radiocarpal (wrist) joint articulates with these bones (and surfaces):

Answer 26

radius, scaphoid, lunate, triquetrum, articular disc of the ulna

Question 27

The radiocarpal joint is a ______________joint:

Answer 27

condyloid

Question 28

The ulnomeniscotriquetral joint is a __________ joint:

Answer 28

functional

Question 29

the joint between the ulna and triquetrum is called?

Answer 29

The ulnomeniscotriquetral joint

Question 30

The proximal row of carpals articulates with the distal row of carpals and is called the:

Answer 30

midcarpal joint

Question 31

Actions of the midcarpal joint:

Answer 31

flexion
extension
movements of these joints increase the movements at the wrist joint

Question 32

The midcarpal joints are ______ joints

Answer 32

plane