Lymphatic System Ch 15 Flashcards Preview

Veterinary Medical Terminology > Lymphatic System Ch 15 > Flashcards

Flashcards in Lymphatic System Ch 15 Deck (24):
1

The lymphatic System

Part of the Immune system, it returns excess lymph to the blood, traps and filters cellular debris(such as cancer cells and microorganisms), reduces tissue edema by removing fluid from capillary beds and absorbs fats and fat-soluble vitamins from the digestive system and transports them to cells.

2

Lymph/o

Lymph Fluid, lymph vessels and lymph nodes

3

Lymphoid

pertains to lymph or tissue or lymphatic system

4

Interstitial Fluid

The clear colorless tissue fluid that leaves the capillaries and flows in the spaces between the cells of a tissue or an organ (bathes and nourishes cells)

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Interstitial

Pertains to the spaces in a tissue or organ

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Lymph

Formed when interstitial fluid moves into the capillaries of the lymphatic system (brings nutrients and hormones to cells and carries waste products from tissue back to the bloodstream)

7

Lymph Capillaries

Thin-walled tubes that carry lymph from the tissue space. (take lymph to lymphatic vessels)

8

Lymphatic Vessels

Similar to veins in that they have valves to prevent the backflow of lymph (unlike blood, lymph only flows in one direction, from its point of origin until it returns to venous circulation - always travels toward the thoracic cavity)

9

Lymph Ducts

Release lymph (and whatever is in the lymph ) into venous blood, where it quickly passed to the lungs and then throughout the body (this can spread infection/diseases)

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Cisterna Chyli (sihs-ter-nah-ki-lee)

The origin of the thoracic duct and saclike structure for the lymph collection

11

Lacteals

Located in the small intestine, are specialized lymph vessels that transport fats and fat-soluble vitamins.

12

Lymph nodes

Small bean-shaped structures that filter lymph and store B and T lymphocytes. Their primary function is to filter lymph to remove harmful substances such as bacteria and viruses. (swollen lymph nodes often a indication of disease.

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Mandibular lymph nodes

Lymph nodes located near the mandible

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Parotid lymph nodes

Lymph nodes located near the ear

15

Para

near

16

otos

ear

17

Mesenteric Lymph nodes

Lymph nodes located near the Mesentery

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Tonsils

Masses of lymphatic tissue that protect the nose and cranial (upper) throat. Lingual tonsils are located near the tongue, Palatine tonsils located near the palate (roof of mouth), and pharyngeal tonsils are located near the throat

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Tonsill/o

tonsil

20

Spleen

Organ located near in the cranial abdomen that filters foreign material from the blood, stores erythrocytes, removes damaged or old erythrocytes, and maintains an appropriate balance of cells. (a secondary lymphoid tissue)

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Sinusoidal lining cells

Where Macrophages line the sinusoids of the spleen. The macrophages phagocytize foreign material, break it down, and present antigenic parts on their surface for the helper T lymphocytes to recognize and initiate and immune response.

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splen/o

spleen

23

Thymus

A gland that has an immunologic function and is found predominately in young animals, primary role is development of T cells that form and come from the bone marrow. Also has endocrine function

24

Thym/o

Thymus

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