BIO 222 Lab Lymphatic System 9

Anatomy & Physiology 2

lymphedema

An accumulation of protein-rich fluid in the skin caused by an insufficiency in the lymphatic system

manual lymphatic drainage

MLD.

Promotes flow of lymph and natural drainage of tissues.

interstitial fluid

Most components of blood plasma filter through blood capillary walls to form.

Found between cells.

lymph

After interstitial fluid passes into lymphatic capillaries, it is called.

Located within lymphatic vessels and lymphatic tissue.

lymphatic capillaries

Located in the spaces between cells; closed at one end

lymphatic vessels

Lymphatic capillaries unite to form larger

lymph nodes

At intervals along the lymphatic vessels, lymph flows through (bean-shaped organs)

lymph trunks

As lymphatic vessels exit lymph nodes in a particular region of the body, they unite to form

veins

In the skin the lymphatic vessels lie in the subcutaneous tissue and follow

arteries

In the viscera the lymphatic vessels follow — and form plexuses around them

lymph trunks

Lumbar trunks.

Intestinal Trunk.

Bronchomediastinal trunks.

Subclavian trunks.

Jugular trunks.

lumbar trunks

Drain lymph from lower limbs, wall and viscera of pelvis, kidneys, adrenal glands and the abdominal wall

intestinal trunk

Drains lymph from stomach, intestines, pancreas, spleen and part of the liver

bronchomediastinal trunks

Drain lymph from thoracic wall, lungs and heart

subclavian trunks

Drain lymph from the upper limbs

jugular trunks

Drain lymph from the head and neck

venous blood

Lymph passes from lymph trunks into two main channels (Right Lymphatic Duct or Thoracic Duct) and then drains into

sequence of fluid flow

Blood capillaries (blood).

Interstitial spaces (interstitial fluid).

Lymphatic capillaries (lymph).

Lymphatic vessels (lymph).

(Lymph nodes (lymph)→lymphatic vessels (lymph).

Lymphatic trunks (lymph).

Lymphatic ducts (lymph).

Junction of internal jugular and subclavian veins (blood).

tonsil

lymph nodes

thymus

spleen

appendix

large intestine

small intestine

preyer’s patch

bone marrow

Lymphatic Organs and Tissues

thymus

Located in the mediastinum between the sternum and the aorta

red bone marrow

Located in flat bones and the epiphyses of long bones of adults

lymph nodes

Located along lymphatic vessels.

Scattered throughout the body, both superficially and deep, and usually occur in groups.

Large groups are present near the mammary glands and in the axillae and groin.

Lymph flows through a lymph node in one direction only.

spleen

Largest single mass of lymphatic tissue in the body

pharyngeal tonsil or adenoid

Located in posterior wall of nasopharynx

palatine tonsils (two)

Located at posterior region of the oral cavity

lingual tonsils (paired)

Located at the base of the tongue

Peyer’s patch

Located in the small intestine