The Arm Flashcards
What are the parts of the humerous at the distal end that articulate with the radius and ulna?
What is the anterior fossa of the humerus?
What are the attachment areas next to the parts of question 1?
What is the posterior fossa?
Capitulum ( lateral) Trochlea (medial) Coronoid fossa. Ant. medial Medial and lateral epicondyles. Olecranon fossa (big fossa)
What is the name of the articulating protuberance that attaches the ulna to the humerus?
What articulates with the tochlear groove?
What is the process that corresponds with part A?
Olecranon
Trochlear notch.
Coronoid process.
What part of the forearm is most likely to dislocate?
The head of the radius.
Brachial Region Name the two compartments. How many muscle each? F? N?
Anterior
3.
Flexors of arm at elbow.
Musculocutaneous n.
Posterior
Triceps brachii (one muscle, three heads)
Extensor of the forearm.
Radial n
Biceps brachii
Head and attachments.
F?
N?
Long head: Supraglenoid tubercle of scapula,
Short head: Coracoid process.
Radial tuberosity. and Forearm Aponeurosis
Flexor and strong supinator of forearm. flex arm.
Musculocutaneous n.
Brachialis
A?
F?
N?
Distal 1/2 of Anterior humerus
Intermuscular septae.
F: Powerful flexor of the forearm in all positions.
N: Musculocutaneous n.
Coracobrachialis
A?
F?
N?
A: Coracoid process, Middle 1/3 of MEDIAL surface of humerus.
F: Flexor and adductor of arm (Glenohumeral joint) (anterior arm)
N: Musculocutaneous n.
Triceps brachii
Heads and attachments?
F?
N?
Long head: Infraglenoid tubercle
Medial Head: Posterior surface of the humerus inferior to the radial groove
Lateral Head: Posterior surface of the humerus superior to the radial groove
Insert: Medial and lateral heads of the olecranon process on the ulna. common tendon insertion.
F: Extension of forearm. Long head Extension of shoulder.Accessory adductor
N: Radial n.
Brachial artery What is it a continuation of? What are its terminal branches? What is its main branch? What do the minor branches do?
Axillary
RAdial and Ulnar terminal branch.
Profunda Brachii–largest
Very small art. assist in blood supply. Send blood around occlusions in elbow.
Cubital Fossa
Where is it?
Shape?
Contents and significance?
Transition between arm and forearm. Triangular depression. Median cubital vein (IV punctures) Brachial artery and two terminal branches. Biceps tendon.
Cubital fossa
Boundaries? 4
Biceps brachii.
Supinator and brachialis (Floor)
Brachioradialis
Pronator teres.
Where do anterior humeral muscles insert?
Where do forearm muscles originate?
Radius and Ulna
Humerus.
What is the name of the fascia that separates the upper arm muscles anterior from posterior.
Lateral and Medial Intermuscular septum
What are the six borders and surfaces of the humerus?
Anterior border Anterolateral surface Lateral border Posterior surface Medial border Anteromedial surface
What are the 3 landmarks of interest on the radial bone concerning the humerus?
Head
Neck
Radial tuberosity.
What are the landmarks of interest on the ulna concerning the humerus?
Olecranon Coronoid process Trochlear notch Radial notch Tuberosity of ulna
Name the landmarks of the Humerus
Head Anatomical neck Greater tubercle Lesser tubercle Intertubercular sulcus Surgical neck Anterolateral surface Anteromedial surface Coracobrachialis insertion Deltoid tubercle Radial groovee Medial supracondylar ridge Medial epicondyle Lateral supracondylar ridge Lateral epicondyle Trachlear/Coronoid fossa of ulna Radial fossa Olecranon fossa Capitulum (art for radius) Trochlea (art for ulna) Groove for ulnar nerve
What is the most common tendon to rupture in the arm?
What does this cause and what is its nickname?
Tendon of the long head of the biceps brachii muscle. Little effect on the upper limb. When the elbow flexes, the unrestrained fibers contract to form a bulge called the “Popeye” sign.
