Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

OTHY 102 - Musculoskeletal Structure and Function > The Elbow and Forearm > Flashcards

The Elbow and Forearm Flashcards

1
Q

What is the purpose of the interroseous membrane?

A

Stope ulna and radius separating under force and transmits force

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is the interroseous membrane made of?

A

Fibrous tissue which pass downward from the radius to the ulna

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Classify the elbow joint

A

Synovial, hinge and pivot joint

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What actions does the humeroradial joint and numeroulnar joint perform?

A

1) probation and supination 2) flexion and extension

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Where is the olecranon bursa located? What is its purpose?

A

Posterior aspect of the elbow. Protective padding of the elbow

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What forms the humeroulnar joint?

A

Torch leat of humerus and trochlear notch of the ulna

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What binds the radius and ulna together?

A

Interroseous membrane

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What muscle attachment structures are on the distal humerus?

A

medial and lateral epicondyles

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What structure of the distal humerus articulates with the ulna and radius?

A

condyle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What structure articulates with the radial fossa of the radius (anterior)

A

capitulum

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What structure of the distal humerus articulates with the coronoid fossa of the ulna?

A

trochlea

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

In relation to the forearm bones, what head is proximal?

A

radius

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What structure on both the radius and ulna is for muscle attachment?

A

radial and ulna tuberosities

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What structure limit the extension and accommodates the olecranon?

A

olecranon fossa

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What bone is the olecranon on?

A

ulna

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What is the function of the radial styloid?

A

stabilize wrist joint

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What movements does the radial head allow?

A

pronation and supination

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Muscles inserting onto what forearm bone cause pronation and supination?

A

radius

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

What bone remains straight during pronation and supination?

A

ulna

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Where is the ulna styolid located?

A

distal head of ulna near the wrist

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

When the forearm is extended, where does the olecranon of the ulna go?

A

olecranon fossa

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

What structure of the ulna accommodates the radial head during pronation and supination?

A

radial notch

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Muscles inserting into what forearm bone cause flexion and extension of the elbow

A

ulna

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

What joins the ulna and radius together?

A

Interosseous membrane

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
What makes the interosseous membrane strong?
It is a fibrous membrane, direction of fibers in downwards for force transmission and allows rotation to occur
26
Where do the interosseous membrane fibers pass downward from?
radius to ulna
27
classify the elbow joint
synovial hinge and pivot joint
28
What structural joint is the 1) Humeroulnar joint 2) Humeroradial joint and what movements do each produce?
1) Hinge - flexion and extension 2) pivot - pronation and supination
29
Where is the olecranon bursa located? What is its purpose?
Posterior aspect of elbow serving to protect the elbow from impact
30
What bony landmarks doe the humeroulnar joint occur at?
Trochlear of humerus and trochlear notch of the ulna
31
Outline ligaments of the elbow.
radial collateral ligament ulnar collateral ligament annular ligament
32
Compare the ulnar to the radial collateral ligament
Ulnar collateral ligament is broader and stronger than the radial collateral ligament due to more dynamic activity
33
Describe the annular ligament and what it assists in
Funnel shaped ligament that is wider superiorly than inferiorly to accommodate the radial head. Allows pronation and supination
34
What are the muscles acting on the elbow joint?
-biceps brachii -brachialis -brachioradialis -triceps brachii -anconeus -pronater teres
35
Describe the attachments of biceps brachii
Origin: coracoid process of scapula Insertion: radial tuberosity
36
What actions does the biceps allow?
flexion (more efficient when arm is pronated) and a bit of supination
37
What does the biceps stabilize?
shoulder joint
38
What muscle is deep to the biceps?
brachialis
39
What are the attachments of brachialis?
humerus to ulna
40
What actions does brachialis allow?
flexion
41
What are the attachments of the brachioradialis
arises half way up humerus below deltoid tuberosity) and inserts on distal radius
42
What two muscles are posterior of the elbow joint? Deduce what actions they cause
- Triceps brachii and anconeus - cause extension - anconeus is a minor extensor
43
What are the attachments of the triceps?
arises from scapula and humerus. Long tendon inserts on olecranon process of ulna
44
Why can't the triceps pronate or supinate?
It does not insert on the radius
45
What muscle does the anconeus oppose?
brachialis
46
What are the attachments of anconeus?
epicondyle of humerus to ulna
47
What does the anconeus assist with?
extension and locking the elbow.
48
Describe the superior humeroradial joint
small articulation below and part of the ulna which allows pronation and supination.
49
What are the joint surfaces of the superior humeroradial joint?
- capitulum of humerus - head of radius
50
What are the joint surfaces of the proximal radioulnar articulation?
- head of radius - radial notch of ulna - annular ligament
51
At the distal radioulnar joint, where is the articular disc located? What is its function?
- between radius and ulna - increases congruency between joint surfaces as there is not a perfect fit
52
Which joint does most of pronation and supination take place?
proximal radioulnar joint - not distal as the bones must stay relative to one another
53
Classify the inferior radioulnar joint
synovial, uniaxial pivot joint
54
What are the movements of the inferior radioulnar joint?
pronation, midprone/neutral and supination
55
Which movement (either pronation or supination) are the radius and ulna parallel with one another?
supination
56
What is a common property of pronator and supinator muscles?
fibers run obliquely
57
Where does pronator teres originate and insert?
originates on ulna and humerus, inserts on radius
58
Where does aupinator originate and insert?
originates on ulna and humerus, inserts on radius
59
What are the attachments of pronator quadratus?
originates on ulna and inserts on radius
60
What is the function of pronator quadratus?
assists pronator teres in pronation
61
List muscles of pronation and supination
pronator teres pronator quadratus supinator
62
Are the muscles of pronation and supination superficial or deep?
deep
63
Which muscle of pronation/supination wraps around the radius?
supinator
64
What are the nerves that supply the upper limb?
- musculocutaneous - median nerve -ulnar nerve - radial nerve
65
What is the innervation of biceps?
musculocutaneous nerve
66
What is the innervation of brachialis?
musculocutaneous nerve
67
What is the innervation of brachioradialis?
radial nerve
68
What is the innervation of triceps brachii?
radial nerve
69
What is the innervation of anconeus?
radial nerve
70
What is the innervation of pronator teres?
median nerve
71
What is the innervation of pronator quadratus?
median nerve
72
What is the innervation of supinator?
radial nerve
73
Identify the following muscle
Biceps Brachii
74
Label the following diagram
75
Identify the following muscle
Brachialis
76
Identify the following muscle
brachioradialis
77
Identify the following muscle
Triceps brachii
78
Identify the following muscle
anconeus
79
Identify the following muscles
80
Label the nerves of the upper limb
81

OTHY 102 - Musculoskeletal Structure and Function (10 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions