Module 8 Flashcards
Which ventral rami unite to form the “typical” brachial plexus?
C4 - C8
C5- T1
C6- T2
C5- T1
Which of the following ventral rami unite to form the inferior trunk of the brachial plexus?
C5-C6
C6-C7
C8-T1
C8 - T1
True or False: All of the trunks of the brachial plexus will give rise to anterior and posterior divisions.
True
Which divisions unite to form the lateral cord of the brachial plexus?
Posterior divisions of the superior and inferior trunks
Anterior divisions of the superior and middle trunks
Anterior divisions of the middle and inferior trunks
Posterior divisions of the middle and inferior trunks
Anterior divisions of the superior and middle trunks
Which of the following nerves is considered a supraclavicular branch of the brachial plexus? Select all that apply.
Dorsal scapular nerve
Radial nerve
Suprascapular nerve
Long Thoracic nerve
Musculotaneous nerve
Axillary nerve
Dorsal Scapular Nerve
Suprascapular Nerve
Long Thoracic Nerve
Which of the following nerves are considered terminal branches of the brachial plexus? Select all that apply.
Lateral pectoral nerve
Upper subscapular nerve
Axillary nerve
Musculotaeous nerve
Median nerve
Medial brachial cutaneous nerve
Axillary nerve
Musculotaeous nerve
Median nerve
Which of the following spaces is considered a space of the thoracic outlet? Select all that apply.**
Quadrangular space
Scalene Triangle
Triangular space
Costoclavicular space
Subpectoral space
Scalene Triangle
Costoclavicular Space
Subpectoral Space
Which structures form the scalene triangle?
Anterior scalene, middle scalene and second rib
Anterior scalene, posterior scalene and first rib
Anterior scalene, middle scalene and first rib
Middle scalene, posterior scalene and second rib
Anterior scalene, middle scalene and first rib
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 humeroradial joint of the elbow?
Trochlear of the humerus & trochlear notch of the ulna
Capitulum of the humerus and head of radius
Olecranon of the ulna and the olecranon fossa of the humerus
Capitulum of the humerus and head of radius
Which of the following structures strengthens the medial aspect of the elbow joint capsule?**
Subcutaneous olecranon bursa
Ulnar collateral
Radial collateral
Ulnar Collateral
Explanation:
The ulnar collateral ligament provides stability to the medial aspect of the elbow joint capsule. The radial collateral ligament will strengthen the lateral aspect of the elbow joint capsule. The subcutaneous olecranon bursa is situated between the olecranon process of the ulna and the overlying skin. Helps reduce friction on the skin during movement of the elbow joint.
True or False: The elbow is a hinge joint that allows one degree of freedom: flexion/ extension.
True
Which of the following muscles is a muscle of the anterior compartment of the arm? Select all that apply.
-coracobrachiallis
-triceps brachii
-anconeus
-biceps brachii
-brachialis
Coracobrachiallis
Biceps Brachii
Brachialis
Which of the following muscles inserts on the radial tuberosity?
Biceps brachii
Triceps brachii
Brachialis
Biceps Brachii
Explanation
The biceps brachii will insert on the radial tuberosity. The triceps inserts on the olecranon process of the ulna, and the brachialis inserts on the ulna tuberosity.
Which of the following muscles will produce motion at both the shoulder and elbow joints? Select all that apply.
-coracobrachialis
-long head of the triceps brachii
-lateral head of the triceps brachii
-long head of the biceps brachii
-short head of the biceps brachii
-brachialis
Long head of the Triceps brachii
Long head of the Biceps brachii
Short head of the Biceps brachii
Explanation
The long and short head of the biceps and the long head of the triceps cross the shoulder joint. The coracobrachialis only cross the shoulder joint (acting on only this joint) and the brachialis and the lateral head of the triceps only cross the elbow joint (acting on only this joint).
True or False: The radial nerve innervates the muscles of the posterior compartment of the arm.
True
Which of the following structures forms a boundary of the triangular interval? Select all that apply.
-teres major
-teres minor
-long head of the triceps
-lateral head of the triceps
-medial head of the triceps
Teres Major
Long head of triceps
Lateral head of triceps
True or False: The musculocutaneous nerve becomes a purely cutaneous nerve after supplying the muscles of the anterior compartment of the arm.
True
What structures can be seen within the triangular interval when transitioning to the posterior compartment of the arm? Select all that apply.
Profunda brachii artery
Circumflex scapular artery
Posterior circumflex humeral artery
Radial nerve
Axillary nerve
Profunda brachii artery
Radial nerve
Which of the following nerves supplies the skin of the medial aspect of the arm?
Medial brachial cutaneous
Inferior lateral brachial cutaneous
Posterior brachial cutaneous
Medial brachial cutaneous
True or False: When the axillary artery crosses the inferior margin of the deltoid muscle it becomes the brachial artery.
False
Explanation
This statement is false: when the axillary artery crosses the inferior margin of the teres major muscle it becomes the brachial artery.
True or False: The profunda brachii artery provides the muscles of the posterior compartment with blood.
True
Which of the following veins is a typical site for venipuncture?
Cephalic
Axillary
Brachial
Median cubital
Median cubital
Explanation
The median cubital vein, which is the communication between the cephalic and basilic vein, is the typical site for venipuncture.
A.) Where does this muscle originate?**
B.) What is the action of this muscle?
(Short Head of Biceps Brachii)
A.) Coracoid Process
B.) Flexion and Supination
A.) Name this muscle**
B.) What nerve does it innervate
a.) Triceps
b.) Radial nerve
A.) What structure does this bony landmark articulate?**
B.) What is the name of the joint?
(Trochlear)
a.) Trochlear notch of Ulna
b.) Humeral Ulnar Joint
