Download Lymphatic System I. Composition of Lymphatic System II. Functions

Lymphatic System
I. Composition of Lymphatic System
II. Functions of Lymphatic System
III. Lymphatic Conducting Vessels
IV. Lymphatic Organs
Guo Ling,MD,PhD
Department of Anatomy
I. Lymphatic System
1.Composition
1) Lymph conducting vessels
2)Lymphatic organs
3) lymphoid tissue
2. Functions
1) Serving as an accessory
system for return of fluid
from the narrow space
between tissues to the heart.
2) Producing lymphocytes
& then participating in
the immune responses.
I. Lymph
Conducting Vessels
lymphatic capillaries
lymphatic vessels
lymphatic trunks
lymphatic ducts
Changes from
small diameter to
large one
Lymphatic Trunks ( 9 in number
Right & Left jugular trunks
Right & Left subclavian trunks
Right & Left bronchomediastinal trunks
Right & Left lumbar trunks
Intestinal trunk
Thoracic Duct
1) Origin: cisterna chyli
2) End: L.venous angle
3) Drainage:6 trunks
4) Route: cisterna chyli
→aortic opening→
posterior mediastinum
(→ right side→left
side)→left venous angle
Right Lymphatic Duct
1) Drainage
3 lymphatic trunks
(collecting lymph
from right and
superior quarter
of body)
2) End
right venous angle
II. Lymphatic Organs
lymph nodes
thymus
tonsil
spleen
lymphatic tissue
in digestive &
respiratory tracts
Lymph Nodes (LNs)
1. Distribution principles of lymph nodes
① lying in the roots of the head,
neck and extremities as well as in the
organ hilums and mesenterium
② arranged along blood vessels & nerves
③ aggregating into groups
2. Main Lymph
Nodes in Body
LNs in Head & Neck
(Reviewing the veins
in neck)
1) Superficial
cervical nodes
2). Deep cervical
lymph nodes
Outline of Lymph Nodes in Head and Neck
Superficial lateral
cervical lymph nodes
Deep Lateral Cervical Lymph Nodes
1) Position:
arranged along
internal jugular V
2) Two groups
divided by
omohyoid muscle
a. superior deep
cervical lymph nodes
( jugulodigastric LN
or angular LN )
b. inferior deep
cervical lymph nodes
Supraclavicular LN
(Virchow LN
lying in the
left venous angle)
LNs
in Upper Limbs
Axillary LNs
1. Anterior group
2. Lateral group
3. Dorsal group
4. Central group
5. Apical group
LNs in Thorax
1.Anterior mediastinal LNs
2. Posterior mediastinal LNs
3. LNs in trachea,
bronchi & lungs :
1) Paratracheal LNs
2) Sup. tracheobronchial LNs
3) Inf. tracheobronchial LNs
4) Bronchopulmonary LNs
5) Pulmonary LNs
LNs in Abdomen (I)
1.Celiac LNs
2.R & L gastric LNs
3.R & L gastroepiploic LNs
4.Pyloric LNs
5.Hepatic LNs
6.Pancreaticosplenic LNs
胰的淋巴管
和淋巴结
LNs in Abdomen (II)
Super. mesenteric LNs
Infer. mesenteric LNs
LNs
in Abdomen (III)
Lumbar LNs
Common iliac LNs
External iliac LNs
Internal iliac LNs
LNs
in Lower Limbs
1.Inguinal LNs
1) Superficial LNs
(T--- shaped)
Upper group
Lower group
2) Profound LNs
2. Popliteal LNs
下
肢
的
淋
巴
管
和
淋
巴
结
1) Location
Thymus
in anterior part of
superior mediastinum
2) Morphology
two lobes
3) Structure
replaced by
adipose tissue
after sex maturation
4) Functions
A. gernerating T cells
B. secreting hormone( lymphopoietin)
Tonsils
1) Location
in the openings of
digestive,
respiratory &
auditory tubes.
腭
2) Composition
咽
Pharyngeal tonsil
Tubal tonsil
Palatine tonsil
lingual tonsil
(Tonsillar ring)
、
扁
桃
体
Spleen 1) Location: in the left hypochondriae region
of the abdomen, its long axis matching the course of the 10th rib
脾的位置
(2) Morphology
1) Two surfaces: visceral surface , hilum of spleen
2) Two borders: superior border, notches
3) Two extremities: anterior extremities
(3) Functions
A. processing aged RBC
B. storing blood
C. generating lymph cells (T & B cells )
D. partaking in immune responses