Block 5 Anat, Anter,Triang,Neck

24 Questions | By Chachelly | Updated: Mar 21, 2022 | Attempts: 114

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1.

A person receives a shallow knife wound just behind the sternocleidomastoid muscle and about 1 1/2 inches above the clavicle. There is an immediate numbness of the skin below the wound and over the acromion and clavicle. The nerve most likely severed was the
- A.
  
  Greater auricular
- B.
  
  Lesser occipital
- C.
  
  Supraclavicular
- D.
  
  Suprascapular
- E.
  
  Transverse cervical
2.

Which muscle is innervated by a branch of the ansa cervicalis?
- A.
  
  Sternocleidomastoid
- B.
  
  Platysma
- C.
  
  Sternohyoid
- D.
  
  Trapezius
3.

The layer of encircling cervical fascia that splits to enclose sternocleidomastoid and trapezius muscles is the:
- A.
  
  Superficial fascia
- B.
  
  Superficial layer of deep fascia
- C.
  
  Infrahyoid fascia
- D.
  
  Prevertebral fascia
- E.
  
  Visceral fascia
4.

Which of the following is a dorsal ramus of a spinal nerve?
- A.
  
  Supraclavicular n.
- B.
  
  Transverse cervical n.
- C.
  
  Great auricular n.
- D.
  
  Greater occipital n.
- E.
  
  Lesser occipital n.
5.

Which of the following is true of the inferior thyroid arteries?
- A.
  
  They arise from the external carotid arteries
- B.
  
  They cross over the superior cervical sympathetic ganglion
- C.
  
  They supply most of the anterior surface of the thyroid gland
- D.
  
  They often supply all four parathyroid glands
6.

A 20 year old man was brought into the emergency room with a stab wound in the upper part of the neck. Although there was no major damage done, he lost sensation from the skin over the angle of the jaw. Which nerve has been cut?
- A.
  
  Supraclavicular n.
- B.
  
  Transverse cervical n.
- C.
  
  Great auricular n.
- D.
  
  Greater occipital n.
- E.
  
  Lesser occipital n.
7.

The triangle in which the superior branch of the ansa cervicalis separates from the hypoglossal nerve is the:
- A.
  
  Carotid
- B.
  
  Muscular
- C.
  
  Subclavian
- D.
  
  Submental
- E.
  
  Occipital
8.

Exploration of the tracheoesophageal groove at the level of the thyroid gland would reveal what important structure bilaterally?
- A.
  
  Cervical sympathetic trunk
- B.
  
  Phrenic nerve
- C.
  
  Pyramidal lobe
- D.
  
  Recurrent laryngeal nerve
- E.
  
  Superior thyroid artery
9.

A 35 year old woman was diagnosed with an adenoma of the thyroid gland. This required excision of the lower pole (left lobe) of the gland and ligation of the artery supplying that region. Which of the following nerves accompanying the artery is most likely to be damaged if the surgeon is not careful?
- A.
  
  External branch of the superior laryngeal
- B.
  
  Internal branch of the superior laryngeal
- C.
  
  Recurrent laryngeal
- D.
  
  Vagus proper
- E.
  
  Sympathetic trunk
10.

One of the motor components of the cervical plexus, the ansa cervicalis, innervates all of the following muscles except the:
- A.
  
  Omohyoid
- B.
  
  Sternohyoid
- C.
  
  Sternothyroid
- D.
  
  Stylohyoid
- E.
  
  Thyrohyoid
11.

A man has metastatic carcinoma and enlarged deep cervical lymph nodes. One of his symptoms is a hoarse voice, barely heard above a whisper. Subsequently he succumbs to the disease and at autopsy it is found that one of the enlarged nodes has put pressure on a nerve in the tracheoesophageal groove. Presumably this was the reason for the hoarse voice. What nerve was involved?
- A.
  
  External branch of the superior laryngeal nerve
- B.
  
  Internal branch of the superior laryngeal nerve
- C.
  
  Nerve to the cricothyroid muscle
- D.
  
  Pharyngeal branch of the glossopharyngeal nerve
- E.
  
  Recurrent laryngeal branch of vagus
12.

You are called on to do a venous catheterization to measure central venous pressure in the heart. Which muscle of the neck would provide the best area of approach to the internal jugular vein?
- A.
  
  Anterior scalene
- B.
  
  Digastric
- C.
  
  Omohyoid
- D.
  
  Sternocleidomastoid
- E.
  
  Sternohyoid
13.

A patient is brought into the Emergency Room in respiratory distress. It is quickly decided to create an emergency airway to restore respiration. At what level could you rapidly create an airway below the vocal cords with a minimum danger of hemorrhage?
- A.
  
  Just above the jugular notch
- B.
  
  Just above the thyroid cartilage
- C.
  
  Just below the cricoid cartilage
- D.
  
  Just below the thyroid cartilage
- E.
  
  Through the 3rd tracheal ring
14.

A 47-year-old woman is diagnosed as having a thyroid tumor. Surgery to remove the cancerous growth is undertaken. In which triangle of the neck will the surgeon make an incision to gain access to the gland?
- A.
  
  Carotid
- B.
  
  Muscular
- C.
  
  Subclavian
- D.
  
  Submandibular
- E.
  
  Submental
15.

A 50-year-old woman is brought to the operating room for a biopsy of a suspicious looking nevus (mole) which is found along the anterior border of her sternocleidomastoid muscle at about its midlength. What nerve must be locally anesthetized for the operation to proceed without pain?
- A.
  
  Ansa cervicalis
- B.
  
  External branch of the superior laryngeal
- C.
  
  Great auricular
- D.
  
  Supraclavicular
- E.
  
  Transverse cervical
16.

Following surgery on the upper pole of the right lobe of the thyroid gland, a patient complains of hoarseness and weakness of voice. What nerve may have been injured?
- A.
  
  Ansa cervicalis
- B.
  
  External branch of the superior laryngeal
- C.
  
  Inferior laryngeal
- D.
  
  Internal branch of the superior laryngeal
- E.
  
  Recurrent laryngeal
17.

These structures are all located in the superficial fascia of the neck EXCEPT
- A.
  
  External jugular vein
- B.
  
  Platysma muscle
- C.
  
  Cervical branch of the facial nerve
- D.
  
  Omohyoid muscle
- E.
  
  Transverse cervical nerve
18.

The superior belly of the omohyoid forms the anterior border of which cervical triangle?
- A.
  
  Carotid
- B.
  
  Muscular
- C.
  
  Omoclavicular
- D.
  
  Posterior
- E.
  
  Submandibular
19.

The cervical plexus innervates all of the following structures EXCEPT:
- A.
  
  Diaphragm
- B.
  
  Omohyoid muscle
- C.
  
  Platysma
- D.
  
  Skin over thyroid cartilage
- E.
  
  Skin over clavicle
20.

An emergency room patient presented with considerable bleeding from a shallow stab wound in the omoclavicular triangle. Which vessel was most likely cut?
- A.
  
  Axillary vein
- B.
  
  Common carotid artery
- C.
  
  External jugular vein
- D.
  
  Inferior thyroid vein
- E.
  
  Superior thyroid artery
21.

Which structure or area receives NO nerve fibers from the cervical plexus?
- A.
  
  Diaphragm
- B.
  
  Skin over the angle of the mandible
- C.
  
  Skin over the external occipital protuberance
- D.
  
  Thyrohyoid muscle
22.

A six-year-old child, whose medical history includes a rather difficult birth, has a permanently tilted head posture, with the right ear near the right shoulder and the face turned upward and to the left. Which of the following muscles was very likely damaged during birth?
- A.
  
  Anterior scalene
- B.
  
  Omohyoid
- C.
  
  Sternocleidomastoid
- D.
  
  Trapezius
- E.
  
  Platysma
23.

Any irritation of the diaphragm (e.g. infection, tumor) may create referred pain that seems (to the patient) to originate in the area atop the shoulder. This is due to the fact that the phrenic nerve shares spinal segments with what cutaneous nerve in the shoulder region?
- A.
  
  Dorsal scapular
- B.
  
  Lesser occipital nerve
- C.
  
  Long thoracic nerve
- D.
  
  Supraclavicular nerve
- E.
  
  Suprascapular nerve
24.

Which of the following statements about the cervical plexus is true?
- A.
  
  It comprises spinal segments C1-C3
- B.
  
  It consists solely of cutaneous nerves
- C.
  
  It consists solely of ventral rami of spinal nerves
- D.
  
  It supplies motor innervation to platysma