Neck anatomy

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Questions and Answers

structure that lies in the cubital fossa:

the median nerve, the brachial artery, the biceps tendon, and the radial nerve.

the anterior group of the muscles of the arm belongs:

Anterior—> (Flexor compartment of arm) contains three muscles: Biceps brachii. Brachialis. Coracobrachialis.

Anterior compartments of the arm

contains three muscles; the biceps brachii, the brachialis and the coracobrachialis.

Brachial artery origin and its branches

The brachial artery runs along the front part of your bicep. It's a continuation of the axillary artery in your armpit and shoulder. It ends at the cubital fossa (the indentation between your upper and lower arm, at the front of your elbow). From there it divides into the ulnar and radial arteries in your forearm. Branches: Deep brachial, superior collateral ulnar, inferior collateral ulnar, radial, and ulnar The brachial artery supplies the humerus, biceps brachii, coracobrachialis, and brachialis muscles. It gives branches to supply the forearm and gives collateral supply to the proximal humerus and the elbow. Its terminal branches, the radial and ulnar arteries, continue distally to supply the forearm and hand. arteries, nutrient artery to the humerus. Supplied Structures: Musculocutaneous supply of the arm, the humerus, collateral supply to the proximal humerus and the elbow joint. Signup and view all the answers

muscles that does belong to the rotator cuff muscles:

a. Supraspinatus c. Teres minor d. Subscapularis e. Infraspinatus Signup and view all the answers

terminal branches of the brachial plexus:

A. Median nerve arises from the median and lateral cord b. Axillary nerve arises from the posterior cord c. Radial nerve arises from the posterior cord d. Ulnar nerve arises from the medial cord. e. Musculocutaneous nerve arises from the lateral cord Signup and view all the answers

statement about axillary artery:

a. It is separated into three parts (anterior branch, posterior branch and auricular branch) at the pectoralis minor muscle b. It is a continuation of the subclavian artery (subclavian becomes Axillary in lateral Margin on 1 rib then passes axilla and becomes brachial ) c. Its continuation is the brachial artery d. Six branches arise from it e. All of the statements above are correct Signup and view all the answers

statement about quadrangular space of the axilla:

c. It is the passageway for the axillary nerve e. It is bounded by the anterior region (axilla) and the posterior scapular region Signup and view all the answers

Which structure is located in the cubital fossa?

Median nerve (C) Signup and view all the answers

Which muscle belongs to the anterior group of muscles in the arm?

Brachialis (D) Signup and view all the answers

Which of the following muscles is NOT part of the rotator cuff?

Teres major (E) Signup and view all the answers

Choose the correct statement about the terminal branches of the brachial plexus.

Ulnar nerve arises from the medial cord (C) Signup and view all the answers

Which statement about the axillary artery is incorrect?

All of the statements above are correct (E) Signup and view all the answers

Choose the correct statement about the quadrangular space of the axilla.

It is the passageway for the axillary nerve (D) Signup and view all the answers

Which muscle is NOT typically innervated by the radial nerve?

All of the above muscles are innervated by the radial nerve (E) Signup and view all the answers

Which artery is found within the anatomical snuffbox?

Radial artery (A) Signup and view all the answers

Following a medial epicondyle fracture and ulnar nerve injury, which muscle is most likely paralyzed?

Flexor carpi ulnaris (A) Signup and view all the answers

Choose the structure which lies in the cubital fossa:

Median nerve (C) Signup and view all the answers

Which of the muscles below does not belong to the rotator cuff muscles:

Teres major (C) Signup and view all the answers

Choose the incorrect statement about axillary artery:

Six branches arise from it (A) Signup and view all the answers

Which muscle is not innervated by the radial nerve:

All of the above muscles are innervated by the radial nerve (E) Signup and view all the answers

Anatomical snuffbox contents:

Radial artery (B) Signup and view all the answers

A 25-year-old man falls on a slippery trail and injures his upper limb. Inspection of the abrasions over his arm at the area of the triceps muscle. Which of the following nerves innervates the triceps muscle?

Radial (B) Signup and view all the answers

A 27-year-old man was admitted to the emergency department after a motor vehicle collision in which he suffered a fracture of the lateral border of the scapula. Six weeks after the accident, physical examination reveals weakness in medial rotation and adduction of the humerus. Which nerve was most likely injured?

Lower subscapular (A) Signup and view all the answers

A 45-year-old man arrived at the emergency department with injuries to his left elbow after he fell on his left hand. Plain radiographic and magnetic resonance imaging (MRI) examinations show a fracture of the medial epicondyle and an injured ulnar nerve. Which of the following muscles will most likely be paralyzed?

Flexor carpi ulnaris (A) Signup and view all the answers

Common carotid artery:

It divides at the level of the superior margin of the thyroid gland (C) Signup and view all the answers

What is FALSE about thyrohyoid membrane?

Its free inferior border forms the vestibular fold (D) Signup and view all the answers

Carotid sinus:

It is innervated by the glossopharyngeal nerve (C) Signup and view all the answers

In the submandibular triangle you CAN'T find:

You can find all above (A) Signup and view all the answers

Platysma:

It begins in the deep fascia of the thorax (A) Signup and view all the answers

Jugulodigastric lymph node:

Drains tonsils (D) Signup and view all the answers

Which structure IS NOT a content of the muscular triangle?

All above are in the muscular triangle (D) Signup and view all the answers

External jugular vein:

It is formed as a connection of the posterior auricular and anterior jugular vein (A) Signup and view all the answers

Which artery doesn't arise from external carotid artery?

Ascending laryngeal (A) Signup and view all the answers

Arytenoid cartilage has:

The apex which articulates with a cuneiform cartilage (C) Signup and view all the answers

Thyrohyoid membrane:

It is pierced by superior laryngeal artery (B) Signup and view all the answers

Laryngeal ventricle/sinus:

It opens into the middle cavity of the larynx (A) Signup and view all the answers

Inlet of the larynx is bounded by:

The base of the tongue posteriorly (A) Signup and view all the answers

Which muscle (listed above: I-V) is a sphincter of the laryngeal inlet?

III, V (D) Signup and view all the answers

Thyroid gland:

Its isthmus is usually located at the level of 2-3 cartilage of the trachea (C) Signup and view all the answers

What is FALSE about the parathyroid glands?

Their arterial supply is from the superior thyroid artery (C) Signup and view all the answers

Which muscle is not innervated by the anterior rami of C1 to C3 through the ansa cervicalis?

Geniohyoid (B) Signup and view all the answers

Sternocleidomastoid muscle:

When acts individually – tilts head toward shoulder on the same side rotating head to the opposite side (E) Signup and view all the answers

Transverse (superficial) cervical artery:

Passes laterally and slightly across the base of the posterior triangle (A) Signup and view all the answers

Hypoglossal nerve:

Innervates the muscles of the tongue (D) Signup and view all the answers

Accessory nerve:

Innervates superficial muscle of the neck (A) Signup and view all the answers

Glossopharyngeal nerve:

Runs along styloglossus muscle (A) Signup and view all the answers

Vagus nerve:

Gives cardiac branches (B) Signup and view all the answers

Superior cervical ganglion of the sympathetic trunk:

Lies in front of the body of C1-C3 vertebrae (A) Signup and view all the answers

Deltoid's muscle origin is on the:

lateral margin of the acromion (E) Signup and view all the answers

Triceps brachii has:

medial head - attached to the medial lip of the intubercular sulcus (D) Signup and view all the answers

Brachialis muscle:

is innervated by the musculocutaneous (A) Signup and view all the answers

The triangular space is formed by:

the inferior margin of the teres major (B) Signup and view all the answers

The cubital fossa:

contains the tendon of biceps brachii (B) Signup and view all the answers

Which from the muscles below belongs to the intermediate layer of the anterior compartment of the forearm?

flexor digitorum superficialis (E) Signup and view all the answers

The radial artery:

can be palpated between brachioradialis and flexor carpi radialis in distal forearm (B) Signup and view all the answers

Flashcards

Cubital fossa contents

Median nerve, brachial artery, biceps tendon, and radial nerve.

Anterior arm muscles

Biceps brachii, brachialis, and coracobrachialis.

Anterior arm innervation

Musculocutaneous nerve (mostly), with a small part of brachialis also supplied by the radial nerve.

Brachial artery

A continuation of the axillary artery, branching into the radial and ulnar arteries at the cubital fossa.