Mammary Gland and Lymph Nodes

Question 1

Breast tissue receives is blood supply from?

Answer 1

the internal mammary/ thoracic artery(branches of the subclavian artery) and branches of the axillary artery

Question 2

the mammary gland is divided into 15-20 lobes. Each lobe is connected to the nipple by?

Answer 2

lactiferous ducts

Question 3

each lobe is separated by dense connective tissue septa called?

Answer 3

suspensory (cooper’s) ligaments

Question 4

true or false: lymph varies in composition depending on its source

Answer 4

true

Question 5

true or false: lymphatic capillaries are much more permeable than blood capillaries

Answer 5

true

Question 6

what are the three most important mechanisms in propelling lymph within its channels?

Answer 6

1. numerous valves in the lymphatic ducts ensure that all lymph flowing in one direction, toward the veins
2. contraction of voluntary muscles, pulsations of adjacent arteries, and contraction of smooth muscle in organs of the digestive, respiratory and urinary tracts can compress lymphatic ducts and “milk” the lymph toward the veins
3. the negative intra-thoracic pressure created during inspiration also plays a are in lymphatic flow

Question 7

what are lymph nodes responsible for?

Answer 7

lymph nodes are responsible for removing antigens from the lymph before the lymph is delivered to the blood and for producing lymphocytes to aid in the immune system

Question 8

what are two major lymphatic ducts?

Answer 8

the right lymphatic duct and the thoracic duct

Question 9

the region below the head and neck and above the umbilicus drains primarily into the?

Answer 9

axillary nodes

Question 10

below the umbilicus, lymph typically drain to?

Answer 10

inguinal nodes

Question 11

final set of lymph nodes that provide the last opportunity to remove antigens from the lymph before it enters the blood

Answer 11

supraclavicular nodes

Question 12

enlargement of supraclavicular nodes on the right indicates?

Answer 12

pathology in the thorax

Question 13

enlargement of supraclavicular nodes on the left may indicate?

Answer 13

pathology in the thorax, abdomen or pelvis

Question 14

primary function of lymphatic vessels

Answer 14

to recover plasma proteins that have escaped blood capillaries into the interstitial space and return them to the blood

Question 15

if proteins are not returned to the blood, fluid accumulates in the extracellular space leading to?

Answer 15

Edema