Human Mammary Gland Anatomy Quiz and Flashcards

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Questions and Answers

Which of the following is the main flexor muscle of the arm?

Musculocutaneous nerve

Biceps brachii

Brachialis (correct)

Coracobrachialis

Which nerve is responsible for the flexion of the forearm, and what happens if it is damaged?

The radial nerve. If damaged, flexion of the forearm is not fully lost.

The ulnar nerve. If damaged, flexion of the forearm is not fully lost.

The median nerve. If damaged, flexion of the forearm is not fully lost.

The musculocutaneous nerve. If damaged, flexion of the forearm is not fully lost. (correct)

Which artery is the terminal branch of the brachial artery?

Axillary artery

Radial and ulnar arteries (correct)

Subclavian artery

Median nerve

Which muscle is attached to the coracoid process of the scapula?

Biceps brachii (short head) Signup and view all the answers

Where is the median nerve located in the upper half of the arm?

Lateral to the brachial artery Signup and view all the answers

Where is the brachial artery located in the lower half of the arm?

Crosses anteriorly to the median nerve Signup and view all the answers

Which artery primarily supplies blood to the lateral part of the mammary gland?

Thoracoacromial branches of the axillary artery Signup and view all the answers

Which group of lymph nodes receives lymphatic drainage from the deep surfaces of the breast?

Apical nodes Signup and view all the answers

Which nerve innervates the sensory function of the breast?

Intercostal nerves Signup and view all the answers

Which of the following is NOT a group of lymph nodes that receives drainage from the breast?

Inguinal lymph nodes Signup and view all the answers

What is the primary function of Cooper's ligaments in relation to the mammary gland?

To firmly attach the mammary gland to the skin Signup and view all the answers

Which of the following structures is responsible for draining lymph from the right side of the body, including the right breast?

Ductus lymphaticus dexter Signup and view all the answers

Which artery is responsible for the anterior and posterior blood supply to the shoulder joint?

Axillary artery Signup and view all the answers

Which muscle is primarily responsible for medial rotation of the shoulder joint?

Subscapularis Signup and view all the answers

Which nerve is most commonly injured during a shoulder dislocation?

Axillary nerve Signup and view all the answers

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

Teres major Signup and view all the answers

Which artery is primarily responsible for the blood supply to the mammary glands?

Internal thoracic artery Signup and view all the answers

Which muscle is responsible for flexion of the shoulder joint?

Biceps brachii Signup and view all the answers

Which lymph node group is responsible for draining lymph from the mammary glands?

Axillary lymph nodes Signup and view all the answers

Which bursae is located between the deltoid muscle and the supraspinatus tendon?

Subacromial bursa Signup and view all the answers

Which muscle is primarily responsible for abduction of the shoulder joint?

Deltoid (acromial) Signup and view all the answers

What is the most common type of anterior shoulder dislocation?

Subcoracoid Signup and view all the answers

Which of the following is NOT a function of the mammary glands?

Oxygen exchange Signup and view all the answers

Which nerve, along with the axillary nerve, is commonly injured during a shoulder dislocation?

Musculocutaneous nerve Signup and view all the answers

Which nerve innervates the pectoralis major muscle?

Medial pectoral nerve Signup and view all the answers

What is the primary function of the pectoralis major muscle?

Adduction and medial rotation of the arm Signup and view all the answers

Which muscle is responsible for pulling the scapula antero-inferiorly?

Pectoralis minor Signup and view all the answers

What is the difference between the actions of the pectoralis major and latissimus dorsi muscles?

The pectoralis major pulls anteriorly, and the latissimus dorsi pulls posteriorly Signup and view all the answers

Which structure does the clavicular head of the pectoralis major originate from?

Sternal half of the clavicle Signup and view all the answers

Which ribs does the sternal head of the pectoralis major originate from?

2nd to 6th ribs Signup and view all the answers

Study Notes

Arm Muscles and Nerves

The main flexor muscle of the arm is not specified.
The nerve responsible for flexion of the forearm is not specified, but damage to it would affect forearm flexion.

Blood Supply

The brachial artery has a terminal branch that supplies blood to the arm.
The lateral thoracic artery primarily supplies blood to the lateral part of the mammary gland.

Breast Anatomy

The pectoralis major muscle is attached to the coracoid process of the scapula.
The median nerve is located in the upper half of the arm, near the breast.
The brachial artery is located in the lower half of the arm, near the breast.
The breast receives lymphatic drainage from the deep surfaces, which goes to the subclavicular lymph nodes.
The sensory function of the breast is innervated by the fourth, fifth, and sixth intercostal nerves.
The subclavicular lymph nodes receive drainage from the breast, but not the popliteal lymph nodes.
Cooper's ligaments provide support to the mammary gland.
The right lymphatic duct drains lymph from the right side of the body, including the right breast.

Shoulder Joint

The anterior and posterior blood supply to the shoulder joint comes from the anterior and posterior circumflex humeral arteries.
The subscapularis muscle is primarily responsible for medial rotation of the shoulder joint.
The axillary nerve is most commonly injured during a shoulder dislocation.
The teres minor muscle is part of the rotator cuff, but the pectoralis major muscle is not.
The suprascapular artery is primarily responsible for the blood supply to the shoulder joint.
The deltoid muscle is primarily responsible for abduction of the shoulder joint.
The most common type of anterior shoulder dislocation is the subcoracoid type.
The mammary glands do not have a function of producing testosterone.

Muscle Functions

The pectoralis major muscle is responsible for flexion of the shoulder joint.
The pectoralis major muscle has a clavicular head that originates from the clavicle and a sternal head that originates from the sternum and costal cartilages of ribs 3-5.
The pectoralis major muscle pulls the scapula antero-inferiorly.
The latissimus dorsi muscle has a different function than the pectoralis major muscle.
The pectoralis major muscle has a primary function of adduction, extension, and medial rotation of the humerus.

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Description

This quiz covers the anatomy of mammary glands including the suspensory ligaments, blood supply, sensory innervation, and lymphatic drainage. Test your knowledge on the structure and functions of the mammary glands.

Anatomy of Mammary Glands

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