chapter 21 Flashcards Preview

biology: human anatomy mortuary science > chapter 21 > Flashcards

Flashcards in chapter 21 Deck (19)
Loading flashcards...
1
Q

main function is to return excess tissue fluid to blood vascular system

A

lymphatic system

2
Q

collect tissue fluid from loose connective tissue
-carry fluid to great veins in the neck
-lymph flows only toward the heart
functions;
-collect excess tissue fluid and blood proteins
-return tissue fluid and blood proteins to bloodstream

A

lymphatic vessels

3
Q
  • protects our bodies from foreign organisms
  • confers immunity to disease
  • main components
  • lymphocytes, lymphoid tissue, lymphoid organs
A

immune system

4
Q

-once tissue fluid is within lymphatic vessels its termed

A

lymph

5
Q
  • smallest lymph vessels
  • first to receive lymph
  • highly permeable vessels
A

lymph capillaries

6
Q

collect from lymph capillaries

-lymph nodes are scattered along collection vessels

A

collecting lymphatic vessels

7
Q

collect lymph from collecting vessels

A

lymph trunks

8
Q

empty into veins of the neck

A

lymph ducts

9
Q
  • located near blood capillaries
  • recieve tissue fluid from CT
  • high permeability of lymphatic capillaries allows entrance of tissue fluid, protein molecules, bacteria, viruses and cancer cells
A

lymphatic capillaries

10
Q
  • specialized lymphatic capillaries
  • located in the villi of small intestines
  • receive digested fats
  • fatty lymph is termed cycle
A

lacteals

11
Q
  • flow of lymph is not aided by the heartbeat

- lymph is propelled by 3 weaker mechanisms

A
  1. bulging of skeletal muscles
  2. pulsing of nearby arteries
  3. tunica media of the lymph vessels
12
Q

superifical lymph nodes located in

A
  1. cervical region
  2. axillary region
  3. inguinal region
13
Q

deep lymph nodes are

A
  1. tracheobronchial lymph nodes
  2. aortic lymph nodes
  3. iliac lymph nodes
14
Q

surrounds lymph nodes

A

fibrous capsule

15
Q

connective tissue strands extend inward to divide lymph node into segments

A

trabeculae

16
Q

5 major lymph trunks

A
  1. lumbar trunks
  2. intestinal trunk
  3. bronchomediastinal trunks
  4. subclavian trunks
  5. jugular trunks
17
Q

-located at the union of lumbar and intestinal trunks

A

cisterna chyli

18
Q
  • ascends along vertebral bodies
  • empties into venous circulation
  • junction of left internal jugular and left subclavian veins
  • drains three quarters of the body
A

thoracic duct

19
Q

empties into right internal jugular and subclavian veins

A

right lymphatic duct