Chapter 20 lymphatic system

Functions of the lymphatic system

Drains excess internal fluid too much= swelling

transports dietary lipids.

Carries out immune responses.

Lympathetic system consists of

Lymph, lymphatic vessels, and Lympathetic tissues and organs

Lymph

fluid transported by lympathetic system does fluid retrieval and dietary fat transport

lymphatic vessels

tubes that carry out lympths

Lympathtic tissues and organs

Immunity

lymphs consists of

• Insterstital fluid leaked out of capillaries because high pressure from the cardiovascular system.

• Fats absorbed from digestive system.

Lympths flow in ___ direction through ______ towards the _____

1, lymphatic vessels, heart

Lymphatic capillaries or lacteals

Smallest fats in the small intestine made of simple squamous epilitheal tissue they are also smallest diameter.

Lymphatic capillaries or lacteals are _____

Smallest diameter

Lymphatic collecting vessels

have valves and lympth nodes

Lymph nodes

Lympathetic organs that filter lympth WBCs

Lymph trunks

Have valves

Ducts

Largest diameter

Right lymphatic duct and thoracic both return _______ system

Cardiovascular

Right lympathtic duct

drains from the right lumen, head, neck, chest, and arm.

Thoracic duct

drains from the left- head, neck, chest, arm, both right and left leg fats from the digestive system

Lymphocytes

B or T cells

Macrophages

Best phagocytes

Dendritic cells

Phagocytes

Reticular cells

Make reticular CT for immune responses

MALT stands for

Mucosa Associated Lympathtic Tissue

Tonsil

Pharynx

Tonsil has

1 pharygneal (adneoids)

2 palatine.

2 lingual

MALT

open body cavities

Appendix

Lumber 1

Other Malt locations

Respiratory Tract

Urinary Tract

Reproductive Tract

Peyer patch

Small intestine

Malt main locations

Appendix, Tonsil, Peyer Patch

Muscular pump

Contraction of skeletal muscles squeezing lympth vessels

Respiratory pump

breathing muscles squeezing lymph vessels

Primary lympathtic organs

are where lymphocytes become immunocomptent

Red bone Marrow

Where B cells mature

Thymus

T cells mature

Most lympathtic tissues and organs are made

Reticular connective tissue

Thymus made of

only made of epilitheal connective tissue