Lymphatic System

Lymphatic System

A secondary circulatory system that collects and returns interstitial fluid to the cardiovascular system, while also playing important roles in immune responses.

Lymph

Fluid that has been absorbed by the lymphatic capillaries from interstitial fluid.

Lymph Nodes

Clusters of immune cells that filter lymph and mount immune responses against pathogens.

Tonsils

Lymphatic tissues located in the pharynx that help initiate immune responses.

Lymphatic Capillaries

Small, thin-walled vessels that absorb interstitial fluid to become lymph.

Interstitial Fluid

Fluid found in the tissues that bathes and nourishes the cells, derived from plasma.

Thymus Gland

An endocrine organ where T cells mature and develop immunocompetence.

B Lymphocytes

White blood cells that produce antibodies and are responsible for humoral immunity.

T Lymphocytes

White blood cells that play a central role in the immune response by killing infected cells.

Cisterna Chyli

The dilation of the lymphatic vessels in the abdomen that collects lymph from the lower body.

Spleen

An organ that recycles red blood cells, stores them, and acts in immune surveillance.

MALT

Mucosa-Associated Lymphoid Tissue which protects mucosal surfaces by gathering and promoting immune responses.

Lacteals

Lymphatic capillaries in the small intestine that absorb dietary fats.

Helper T Cells

T cells that help activate B cells and cytotoxic T cells for immune response.

Cytotoxic T Cells

T cells that directly kill infected cells and cancer cells.

Macrophages

Large phagocytic cells that clean up dead cells and pathogens.

Natural Killer Cells

Lymphocytes that attack and destroy tumor cells and virus-infected cells.

Hematopoietic Stem Cells

Stem cells in the bone marrow that differentiate into red and white blood cells.

Antibodies

Proteins produced by plasma cells that bind to specific antigens and mark them for destruction.

Memory B Cells

B cells that remain in the body to provide long-term immunity against previously encountered antigens.

Autoimmunity

A condition where the immune system mistakenly attacks the body's own cells.

Vaccine

A substance that stimulates an immune response without causing disease, helping to build immunity.

Eosinophils

White blood cells that combat multicellular parasites and certain infections.

Basophils

White blood cells involved in allergic reactions and inflammation, releasing histamine.

Neutrophils

The most abundant type of white blood cells that respond quickly to infections.

AIDS

Acquired Immunodeficiency Syndrome, a condition caused by the HIV virus that weakens the immune system.

Cytokines

Chemical messengers produced by cells that stimulate other immune cells.

Homeostasis

The stable, balanced state maintained by biological systems, including the balance of fluids.

Thoracic Duct

The largest lymphatic vessel that drains lymph from the lower body and left side of the upper body back into circulation.

Right Lymphatic Duct

Lymphatic vessel that drains lymph from the right side of the head, thorax, and right arm into the bloodstream.

Lymphatic trunks

Large vessels that drain lymph from lymphatic vessels, leading to the ducts.

Histamine

A compound released by mast cells that causes inflammation and draws immune cells to areas of infection or injury.

Red Bone Marrow

Where do B-lymphocytes develop immunocompetence?

Neutrophils, basophils, eosinophils, monocytes

Which Leukocyte types can be produced from a myeloid stem cell?

T

T or F, during hematopoiesis the lymphoid line forms B lymphocytes, T lymphocytes, and NK cells

Lactleal

A lipid molecule is absorbed through the epithelium of the small intestine , it will enter the lymphatic system Via..

Submandibular

This is not a tonsil

T

T or F, lymph nodes house portions of our immune system and act as “monitor stations” as lymph passes through the lymphatic system.

Spleen, red bone marrow, thymus gland, lymph nodes, tonsils

… are components of the lymphatic system

Spleen

Blood reservoir, recycles aged erythrocytes, houses lymphocytes, filters blood are all functions of the..