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Multiple Choice Questions – Pectoral Region

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Sep 15, 2025 PDF Available

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Multiple Choice Questions – Pectoral Region


Fascia & General Anatomy

Q1. The fascia covering pectoralis major is called:
A. Axillary fascia
B. Pectoral fascia
C. Clavipectoral fascia
D. Thoracolumbar fascia
Answer: B. Pectoral fascia

Q2. The suspensory ligament of axilla is derived from:
A. Pectoral fascia
B. Axillary fascia
C. Clavipectoral fascia
D. Deep cervical fascia
Answer: C. Clavipectoral fascia

Q3. Which structure pierces the clavipectoral fascia?
A. Cephalic vein
B. Thoracoacromial vessels
C. Lateral pectoral nerve
D. All of the above
Answer: D. All of the above

Q4. The deltopectoral groove contains:
A. Basilic vein
B. Cephalic vein
C. Axillary vein
D. Brachial vein
Answer: B. Cephalic vein

Q5. The anterior axillary fold is formed by:
A. Serratus anterior
B. Pectoralis major
C. Latissimus dorsi
D. Subclavius
Answer: B. Pectoralis major


Muscles of Pectoral Region

Q6. Pectoralis major is supplied by:
A. Medial pectoral nerve
B. Lateral pectoral nerve
C. Both medial and lateral pectoral nerves
D. Long thoracic nerve
Answer: C. Both medial and lateral pectoral nerves

Q7. Which muscle divides the axillary artery into 3 parts?
A. Pectoralis major
B. Pectoralis minor
C. Subclavius
D. Serratus anterior
Answer: B. Pectoralis minor

Q8. Nerve supply of pectoralis minor is:
A. Medial pectoral nerve
B. Lateral pectoral nerve
C. Both nerves
D. Thoracodorsal nerve
Answer: A. Medial pectoral nerve

Q9. Subclavius muscle protects which structure?
A. Subclavian vessels
B. Axillary vein
C. Cephalic vein
D. Thoracoacromial artery
Answer: A. Subclavian vessels

Q10. Paralysis of serratus anterior results in:
A. Drooping shoulder
B. Winged scapula
C. Loss of elbow flexion
D. Claw hand
Answer: B. Winged scapula

Q11. Long thoracic nerve arises from:
A. C3–C5
B. C4–C6
C. C5–C7
D. C6–C8
Answer: C. C5–C7

Q12. Which muscle is called the “boxer’s muscle”?
A. Pectoralis major
B. Pectoralis minor
C. Serratus anterior
D. Subclavius
Answer: C. Serratus anterior


Breast Anatomy

Q13. Breast lies in which fascia?
A. Deep fascia
B. Superficial fascia
C. Axillary fascia
D. Clavipectoral fascia
Answer: B. Superficial fascia

Q14. Vertical extent of breast is between:
A. 1st–4th ribs
B. 2nd–6th ribs
C. 3rd–7th ribs
D. 2nd–7th ribs
Answer: B. 2nd–6th ribs

Q15. Nipple in males and nulliparous females is usually at:
A. 2nd intercostal space
B. 3rd intercostal space
C. 4th intercostal space
D. 5th intercostal space
Answer: C. 4th intercostal space

Q16. The sebaceous glands in areola are called:
A. Meibomian glands
B. Montgomery’s tubercles
C. Cowper’s glands
D. Littre’s glands
Answer: B. Montgomery’s tubercles

Q17. Suspensory ligaments of breast are called:
A. Cooper’s ligaments
B. Camper’s ligaments
C. Gerdy’s ligaments
D. Poupart’s ligaments
Answer: A. Cooper’s ligaments

Q18. Retromammary space lies between:
A. Breast and skin
B. Breast and pectoral fascia
C. Breast and clavicle
D. Breast and axilla
Answer: B. Breast and pectoral fascia

Q19. Which part of breast extends into axilla?
A. Tail of Spence
B. Cooper’s ligament
C. Pectoral fascia
D. Axillary fold
Answer: A. Tail of Spence

Q20. Nerve supply of nipple is from:
A. 2nd intercostal nerve
B. 3rd intercostal nerve
C. 4th intercostal nerve
D. 5th intercostal nerve
Answer: C. 4th intercostal nerve


Blood Supply & Lymphatics

Q21. Major arterial supply to breast is from:
A. Subscapular artery
B. Internal thoracic artery
C. Vertebral artery
D. Posterior intercostal artery only
Answer: B. Internal thoracic artery

Q22. Which group of lymph nodes drains 75% of breast lymph?
A. Parasternal nodes
B. Posterior intercostal nodes
C. Axillary nodes
D. Subdiaphragmatic nodes
Answer: C. Axillary nodes

Q23. Medial part of breast drains into:
A. Axillary nodes
B. Parasternal nodes
C. Supraclavicular nodes
D. Posterior intercostal nodes
Answer: B. Parasternal nodes

Q24. Lymph from lower part of breast may spread to liver through:
A. Posterior intercostal nodes
B. Parasternal nodes
C. Subdiaphragmatic plexus
D. Apical axillary nodes
Answer: C. Subdiaphragmatic plexus

Q25. Subareolar plexus of lymphatics is called:
A. Cooper’s plexus
B. Sappey’s plexus
C. Camper’s plexus
D. Retromammary plexus
Answer: B. Sappey’s plexus


Clinical Breast Anatomy

Q26. Most common site of carcinoma breast:
A. Upper inner quadrant
B. Upper outer quadrant
C. Lower inner quadrant
D. Lower outer quadrant
Answer: B. Upper outer quadrant

Q27. Dimpling of breast skin is due to involvement of:
A. Lactiferous ducts
B. Suspensory ligaments of Cooper
C. Subcutaneous veins
D. Retromammary space
Answer: B. Suspensory ligaments of Cooper

Q28. Peau d’orange appearance is due to:
A. Fibrosis of ducts
B. Blockage of cutaneous lymphatics
C. Retromammary abscess
D. Venous congestion
Answer: B. Blockage of cutaneous lymphatics

Q29. Carcinoma of breast spreads to opposite side through:
A. Axillary nodes
B. Parasternal nodes
C. Posterior intercostal nodes
D. Subdiaphragmatic nodes
Answer: B. Parasternal nodes

Q30. Vertebral metastasis of breast carcinoma occurs via:
A. Axillary nodes
B. Parasternal nodes
C. Posterior intercostal veins → vertebral venous plexus
D. Subdiaphragmatic plexus
Answer: C. Posterior intercostal veins → vertebral venous plexus


Axilla Intro

Q31. Apex of axilla is called:
A. Axillary inlet
B. Thoracic outlet
C. Cervicoaxillary canal
D. Interscalene space
Answer: C. Cervicoaxillary canal

Q32. Apex of axilla is bounded by:
A. Clavicle, 1st rib, scapula
B. Clavicle, sternum, humerus
C. Ribs 2–4, scapula, sternum
D. None of the above
Answer: A. Clavicle, 1st rib, scapula

Q33. Floor of axilla is formed by:
A. Skin and axillary fascia
B. Pectoralis major
C. Subscapularis
D. Serratus anterior
Answer: A. Skin and axillary fascia

Q34. Posterior wall of axilla is formed by:
A. Pectoralis major, minor
B. Serratus anterior
C. Subscapularis, teres major, latissimus dorsi
D. Clavicle and subclavius
Answer: C. Subscapularis, teres major, latissimus dorsi

Q35. Medial wall of axilla is formed by:
A. Pectoralis major
B. Serratus anterior with ribs and intercostals
C. Subclavius
D. Teres major
Answer: B. Serratus anterior with ribs and intercostals


Applied Anatomy & Clinical Cases

Q36. Injury to long thoracic nerve during mastectomy leads to:
A. Claw hand
B. Winging of scapula
C. Ape thumb deformity
D. Wrist drop
Answer: B. Winging of scapula

Q37. Which nerve is endangered in axillary lymph node dissection?
A. Long thoracic nerve
B. Thoracodorsal nerve
C. Both A and B
D. Ulnar nerve
Answer: C. Both A and B

Q38. Poland’s syndrome involves:
A. Absence of serratus anterior
B. Absence of sternocostal part of pectoralis major
C. Absence of clavicle
D. Absence of pectoralis minor
Answer: B. Absence of sternocostal part of pectoralis major

Q39. Gynecomastia is:
A. Carcinoma of male breast
B. Benign enlargement of male breast
C. Extra nipple
D. Accessory breast tissue
Answer: B. Benign enlargement of male breast

Q40. Polythelia refers to:
A. Extra breast tissue
B. Extra nipple along milk line
C. Absence of breast
D. Male breast enlargement
Answer: B. Extra nipple along milk line


Advanced/Integration

Q41. Which artery is closely related to pectoralis minor?
A. Subclavian artery
B. Axillary artery (divided into 3 parts)
C. Internal thoracic artery
D. Brachial artery
Answer: B. Axillary artery

Q42. Which vein drains most of the breast?
A. Axillary vein
B. Brachiocephalic vein
C. Vertebral vein
D. Subclavian vein only
Answer: A. Axillary vein

Q43. Which quadrant of breast is least likely to develop carcinoma?
A. Upper outer
B. Upper inner
C. Lower outer
D. Lower inner
Answer: D. Lower inner

Q44. Which muscle forms the floor of deltopectoral groove?
A. Pectoralis major
B. Pectoralis minor
C. Deltoid
D. Clavicular head of pectoralis major
Answer: A. Pectoralis major

Q45. Which nerve supplies subclavius muscle?
A. Long thoracic nerve
B. Medial pectoral nerve
C. Nerve to subclavius
D. Thoracodorsal nerve
Answer: C. Nerve to subclavius

Q46. What is the surgical importance of retromammary space?
A. Contains Cooper’s ligaments
B. Allows mobility of breast, site for implants
C. Site for venous drainage
D. Pathway for parasternal lymphatics
Answer: B. Allows mobility of breast, site for implants

Q47. Which vein pierces clavipectoral fascia before entering axillary vein?
A. Cephalic vein
B. Basilic vein
C. Median cubital vein
D. Brachial vein
Answer: A. Cephalic vein

Q48. Which nerve is sensory to nipple and areola?
A. 3rd intercostal nerve
B. 4th intercostal nerve
C. 5th intercostal nerve
D. Supraclavicular nerve
Answer: B. 4th intercostal nerve

Q49. A pulsatile swelling in deltopectoral triangle most likely involves:
A. Thoracoacromial artery
B. Internal thoracic artery
C. Subscapular artery
D. Lateral thoracic artery
Answer: A. Thoracoacromial artery

Q50. Which muscle forms medial wall of axilla and is supplied by long thoracic nerve?
A. Pectoralis major
B. Pectoralis minor
C. Serratus anterior
D. Subclavius
Answer: C. Serratus anterior

 

Additional MCQs – Pectoral Region

Q51. Which muscle forms the posterior boundary of clavipectoral fascia?
A. Pectoralis major
B. Pectoralis minor
C. Subclavius
D. Serratus anterior
Answer: C. Subclavius


Q52. Which structure maintains the hollow of axilla?
A. Axillary vein
B. Suspensory ligament of axilla
C. Pectoralis minor
D. Thoracodorsal fascia
Answer: B. Suspensory ligament of axilla


Q53. Which muscle is enclosed between the two layers of clavipectoral fascia?
A. Subclavius
B. Serratus anterior
C. Pectoralis minor
D. Pectoralis major
Answer: C. Pectoralis minor


Q54. Which quadrant of breast is the most common site of carcinoma?
A. Upper outer
B. Upper inner
C. Lower inner
D. Lower outer
Answer: A. Upper outer


Q55. Which vein is often used for central venous access in deltopectoral groove?
A. Axillary vein
B. Cephalic vein
C. Basilic vein
D. Median cubital vein
Answer: B. Cephalic vein


Q56. Which lymph node group drains the medial quadrant of breast?
A. Pectoral nodes
B. Parasternal nodes
C. Subscapular nodes
D. Central nodes
Answer: B. Parasternal nodes


Q57. Peau d’orange appearance in breast carcinoma is due to:
A. Venous obstruction
B. Lymphatic obstruction
C. Nerve infiltration
D. Fat necrosis
Answer: B. Lymphatic obstruction


Q58. Retraction of nipple in carcinoma breast is due to fibrosis of:
A. Suspensory ligaments
B. Lactiferous ducts
C. Pectoral fascia
D. Retromammary space
Answer: B. Lactiferous ducts


Q59. Which artery accompanies long thoracic nerve?
A. Subclavian artery
B. Thoracodorsal artery
C. Lateral thoracic artery
D. Thoracoacromial artery
Answer: C. Lateral thoracic artery


Q60. The apex of axilla transmits all except:
A. Axillary artery
B. Axillary vein
C. Brachial plexus cords
D. Long thoracic nerve
Answer: D. Long thoracic nerve


Q61. Which structure is palpated at the sternal angle (Angle of Louis)?
A. 1st rib
B. 2nd rib
C. 3rd rib
D. 4th rib
Answer: B. 2nd rib


Q62. Which nerve supplies the clavicular head of pectoralis major?
A. Medial pectoral nerve
B. Lateral pectoral nerve
C. Thoracodorsal nerve
D. Subclavian nerve
Answer: B. Lateral pectoral nerve


Q63. Which intercostal nerve supplies sensation to the nipple?
A. 2nd
B. 3rd
C. 4th
D. 5th
Answer: C. 4th


Q64. Which group of axillary nodes is first involved in breast carcinoma?
A. Apical
B. Central
C. Pectoral (anterior)
D. Subscapular (posterior)
Answer: C. Pectoral (anterior)


Q65. Which condition is characterized by absence of sternocostal head of pectoralis major?
A. Poland’s syndrome
B. Turner’s syndrome
C. Klippel-Feil syndrome
D. Apert’s syndrome
Answer: A. Poland’s syndrome


Q66. Which space allows mobility of the breast over the chest wall?
A. Subpectoral space
B. Retromammary space
C. Interpectoral space
D. Clavipectoral space
Answer: B. Retromammary space


Q67. Which is the main venous drainage of the breast?
A. Internal thoracic vein
B. Axillary vein
C. Posterior intercostal vein
D. All of the above
Answer: D. All of the above


Q68. Which nerve must be preserved during axillary lymph node dissection to prevent loss of shoulder adduction?
A. Long thoracic nerve
B. Thoracodorsal nerve
C. Suprascapular nerve
D. Median nerve
Answer: B. Thoracodorsal nerve


Q69. Which vein provides a communication between superficial and deep venous systems in breast region?
A. Lateral thoracic vein
B. Cephalic vein
C. Thoracoepigastric vein
D. Internal thoracic vein
Answer: C. Thoracoepigastric vein


Q70. In breast carcinoma, spread to vertebra occurs via:
A. Axillary lymph nodes
B. Posterior intercostal veins → vertebral venous plexus
C. Parasternal nodes
D. Subdiaphragmatic plexus
Answer: B. Posterior intercostal veins → vertebral venous plexus


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