Upper Limb: Arm Region Flashcards
Which of the following structures is considered a bony landmark of the distal humerus? Select all that apply.
Deltoid tuberosity
Surgical neck
Capitulum
Trochlea
Olecranon fossa
Capitulum
Trochlea
Olecranon fossa
Which structures are bony landmarks for the proximal ulna? Select all that apply.
Coronoid process
Trochlear notch
Ulna styloid
Coracoid process
Olecranon
Coronoid process
Trochlear notch
Olecranon
Which of the following articulations form the humeral radial joint of the elbow?
A. Trochlear of the humerus and trochlear notch of the ulna
B. Capitulum of the humerus and head of the radius
C. Olecranon of the ulna and olecranon fossa of the humerus
B
True or false: The elbow is a hinge synovial joint allowing for one degree of freedom: flexion and extension.
True
Which of the following muscles is a muscle of the anterior compartment of the arm? Select al that apply.
Coracobrachialis
Triceps brachii
Anconeus
Biceps brachii
Brachialis
Coracobrachialis
Biceps brachii
Brachialis
Which of the following inserts on the radial tuberosity?
A. Biceps brachii
B. Triceps brachii
C. Brachialis
A
Which of the following muscles will produce motion at both the shoulder and elbow joints? Select all that apply.
Coracobrachialis
Long head of triceps brachii
Lateral head of triceps brachii
Long head of biceps brachii
Short head of biceps brachii
Brachialis
Long head of triceps brachii
Long head of biceps brachii
Short head of biceps brachii
True or false: The radial nerve innervates the muscles of the posterior compartment of the arm.
True
Label the parts of the humerus.
See image
Label the parts of the elbow joint.
See image.
The elbow joint is a __________ type of synovial joint formed by the ___________ and ____________ articulations.
Humeroulnar
Humeroradial
The __________ ligament lies medial to the elbow joint and stablizes the humeroulnar articulation.
Ulnar collateral
The _________ ligament lies lateral the the elbow joint and stabilizes the humeroradial articulation.
Radial collateral
What bony landmarks of the forearm articulate with the humerus to form the elbow joint?
Trochlear notch, head of radius, olecranon
What bony landmarks of the humerus articulate with the radius and ulna to form the elbow joint?
Trochlea, capitulum, olecranon fossa
What bursa is located between the subcutaneous connective tissue and the olecranon?
Subcutaneous olecranon bursa
What structures divide the arm into anterior and posterior compartments?
medial and lateral inter-muscular septa
What muscles of the posterior and anterior compartments act ONLY on the elbow joint?
Anconeus (posterior) and Brachialis (anterior)
What is bursitis?
Inflammation of the bursa/e
What is the carrying angle?
Caused by the trochlea, which projects more inferiorly at an angle; this causes the forearm to deviate laterally from the long axis of the humerus by about 10 to 15 degrees
Which layer of fascia is penetrated by deep nerves and vessels?
A. Superficial fascia
B. Brachial fascia
C. Medial and lateral inter-muscular septa
B
The musculocutaneous nerve innervates which 3 muscles? What do these muscles have in common?
- Coracobrachialis, biceps brachii, Brachialis
- They are all in the anterior compartment and flex the elbow joint
The radial nerve innervates which muscles? What do they have in common?
- Triceps brachii and anconeus
- They are in the posterior compartment and extend the elbow joint
Which muscle of the anterior compartment acts only on the shoulder?
Coracobrachialis
Which muscle of the anterior compartment acts on BOTH the shoulder AND the elbow joint?
Biceps brachii
Which part of the triceps acts on BOTH the shoulder AND the elbow joint?
A. Long head
B. Lateral head
C. Medial head
D. All three heads do
A
“The tendon of the long head of the biceps moves back and forth in the intertubercular sulcus of the humerus. Repetitive microtrauma can cause inflammation.”
The above description fits which of the following clinical conditions?
A. Bursitis
B. Bicipital groove tendonitis
C. Rupture of the biceps tendon
B
“This condition usually results from wear and tear of an inflamed tendon. The occurrence is usually dramatic, and the muscle belly forms a ball near the center of the distal part of the anterior aspect of the arm.”
The above description fits which of the following clinical conditions?
A. Bursitis
B. Bicipital groove tendonitis
C. Rupture of the biceps tendon
C
What is the most common type of elbow dislocation?
Posterior dislocation