Flashcards in Lymphatics Deck (75)
What are the 3 anatomical components of the lymphatic system?
1. Lymph fluid
2. Lymphatic vessels
3. Lymphatic tissues/organs
Main function of the lymphatic system?
Homeostasis - immune, digestive, waste, etc.
When does the lymphatic system begin to develop?
5th week of gestation
Why is breast feeding recommended?
The lymphoid tissue is immature at birth
4 functions of lymphatic system?
1. Maintain fluid balance
2. Tissue purification - lymph bathes organs, cleanses toxins and bacteria
3. Defense - lymph nodes contains immune cells, Ag processing and presentation
4. Nutrition - Fat absorption via chylomicrons, returns proteins to vasculature
When fluid overload occurs, the lymphatic system helps prevent tissue damage by ________
_____ of lymph is necessary for appropriate immune function
4 tissues that do NOT have lymphatic vessels?
1. Epidermis including hair and nails
2. Endomysium of muscle
4. Bone marrow
Describe the pathway for lymph
Afferent lymph vessels
Efferent lymph vessels
Thoracic duct or right lymphatic duct
Collecting vessels consist of chains of muscular units called?
Lymphangions - contract to move lymph in peristaltic waves
Lymphangions contain what type of muscle?
2 types of lymph nodes?
Superficial - in subcutaneous tissue
Function of lymph nodes
Filtration of fluid, maturation of lymphocytes and phagocytosis of bacteria
What are the lymphatic trunks?
Efferent lymphatic vessels drain into?
This trunk drains lymph from lower limbs and pelvic organs
This trunk drains lymph from abdominal viscera
This trunk drains portions of thorax
This trunk drains upper limbs
This trunk drains portions of neck and head
What drains the lymphatic trunks of the lower body?
Where is the cisterna chyli?
What gives rise to the thoracic duct?
Cisterna chyli at L1-2
What drains into the thoracic duct?
Left head, Left neck, Left UE, Left thorax/abdomen
EVERYTHING INFERIOR TO UMBILICUS
What does the thoracic duct empty into?
Left subclavian and Left internal jugular veins
What drains into the Right lymphatic duct?
Right head, Right neck, Right UE, R thorax
Heart and lungs
What does the right lymphatic duct empty into?
Right subclavian and Right internal jugular venous JUNCTION
Swollen, soft and painful lymph node may indicate?
Swollen, hard and non-painful lymph node may indicate?