Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
PT 384 Elbow/Forearm
| Question | Answer |
|---|---|
| The elbow is what type of joint? | • Hinge |
| The proximal radio-ulnar joint is what type of joint? | • Pivot |
| What bones are involved with the elbow joint? | • Humerus • Ulna • Radius |
| What is the articulating surface of the humerus to the ulna? | • Trochlea |
| What is the articulating surface of the humerus to the radius? | • Capitulum |
| What is the articulating surface of the ulna to the humerus? | • Trochlear notch |
| What is the articulating surface of the radius to humerus? | • Radial head |
| How does the superior RU joint work? | • The head of radius pivots within the radial notch of ulna |
| How does the inferior RU joint work? | • The ulnar notch of the radius rotates around the head of the ulna |
| What type of axial joint is the elbow? | • Uniaxial hinge |
| What are the names of the joints in the elbow | • Radiohumeral joint • Ulnohumeral |
| Does the Radiohumeral joint fit well? | • No |
| Is the Radiohumeral joint stable? | • No |
| Does the ulnohumeral fit well? | • Yes |
| Is the ulnohumeral joint stable? | • Yes |
| What type of axial joint is the radio-ulnar? | • Uniaxial pivot joint |
| How many degrees of flexion and extension does the elbow have? | • 0 - 145° |
| How many degrees of supination does the forearm have? | • 90° |
| How many degrees of pronation does the forearm have? | • 80° |
| Is forearm pronation or supination the more dangerous position? Why? | • Pronation • Because the radius crosses over the ulna which can cause a bone fracture as radius presses against the ulna |
| Is the Radiohumeral joint or the ulnohumeral joint mostly likely to dislocate? | • Radiohumeral |
| How many degrees of carrying angle do men have? | • 5° |
| How many degrees of carrying angle do women have? | • 10°- 15° |
| Why do we have the carrying angle? | • Because the trochlea is lower than the capitulum, therefore the axis for flexion/extension is uneven. |
| What are the purposes of the carrying angle? | • Makes it easier to being food to the mouth. • Keeps forearm away from the body. |
| What 2 things does the medial collateral ligament do? | Maintains elbow stability on the medial side. • Keep elbow from too much valgus (hand outward) |
| What is another name for the medial collateral ligament? | • Ulnar collateral ligament |
| What is another name for the lateral collateral ligament? | • Radial collateral ligament |
| What 2 things does the radial collateral ligament do? | • Maintains lateral elbow stability • Keeps elbow from too much varus (hand inward; toward midline) |
| What is the name of the ligament the holds the radial head in the radial notch of ulna? | • Annular ligament |
| What is the membrane between the ulna and radius? | • Interosseous membrane |
| What 2 things does the interosseous membrane do? | • Keeps bones together • Provides surface area for muscle attachment |
| What does the brachialis, biceps brachii, and brachioradialis have in common? | • They all flex the elbow |
| What will a muscle most likely do if the insertion is on the radius? | • Forearm supination |
| What will be a problem if the radial nerve is damaged? | • Elbow extension |
| What muscle does a pushup strengthen most? | • Triceps: both concentrically and eccentrically |
| Origin of triceps brachii | • Long head: infraaglenoid tuberle of scapula • Lateral Head: lateral and posterior to greater tubercle of humerus • Medial head: posterior surface of humerus |
| Insertion of supinator muscle | • Anterior surface of proximal radius |
| Origin of brachialis | • Distal half of humerus, anterior surface |
| Nerve of pronator teres | • Median nerve |
| Action of biceps brachii | • Elbow flexion and forearm supination |
| Nerve of supinator | • Radial |
| Origin of pronator teres | • Medial epicondyle of humerus and coronoid process of ulna |
| Origin of supinator | • Lateral epicondyle of humerus and adjacent ulna |
| Action of triceps brachii | • Elbow extension |
| Action of brachialis | • Elbow flexion |
| Insertion of biceps brachii | • Radial tuberosity of radius |
| Nerve of brachialis | • Musculocutaneous |
| Origin of pronator quadratus | • Distal 1/4 of ulna |
| Insertion of pronator teres | • Lateral aspect of radius at its midpoint |
| Nerve of brachioradialis | • Radial |
| Action of supinator | • Forearm supination |
| Insertion of brachialis | • Styloid process of radius |
| Action of pronator teres | • Forearm pronation , assist elbow flexion |
| Nerve of biceps brachii | • Musculocutaneous |
| Origin of brachioradialis | • Lateral suprcondylar ridge of humerus |
| Nerve of triceps brachii | • Radial |
| Action of brachioradialis | • Elbow flexion |
| Insertion of pronator quadratus | • Distal 1/4 of radius |
| Origin of biceps brachii | • Long head: supraglenoid tubercle of scapula • Short head: coranoid process of scapula |
| Nerve of pronator quadratus | • Median |
| Nerve of anconeus | • Radial nerve (C7, C8) |
| Insertion of triceps | • Olecranon process of ulna |
| Insertion of brachialis | • Coronoid process and ulnar tuberosity of ulna |
| Insertion Anconeus | • Lateral & inferior to olecranon process of ulna |
| Action Pronator quadratus | • Forearm pronation |
| Action of anconeus | • Not a prime mover of joint motion, assists in elbow extension |
Created by:
lap292
Popular Physical Science sets