Lymphatic & Digestive Systems

unit 7 digestive system and unit 11 lymphatic system

lymph fluid

clear fluid derived from interstitial fluid; returns excess fluid to the blood stream and transport immune system

lymphatic vessel

network of vessel that transport lymph toward the heart

lymph nodes

Small, bean-shaped structures located throughout the body that filter lymph fluid and play a critical role in activating the immune response by trapping pathogens and facilitating the activity of immune cells.

tonsils

lymphatic tissue that traps pathogens entering through the mouth and nose

palatine tonsils

The palatine tonsils are oval-shaped masses of lymphatic tissue located on either side of the throat, which play a crucial role in the body's immune response by trapping pathogens entering through the mouth and nose, thereby helping to prevent infections.

lingual tonsils

The lingual tonsils are a collection of lymphatic tissue located at the base of the tongue, playing a role in the body's immune response by trapping pathogens that enter through the mouth.

pharyngeal tonsils

Pharyngeal tonsils, also known as adenoids, are lymphatic tissues located at the back of the nasal cavity. They play a critical role in immune response by trapping pathogens that enter the body through the nasal passages.

spleen

The spleen is an organ that plays multiple roles, including filtering blood, recycling iron, and contributing to immune function by producing lymphocytes and storing white blood

thymus

site of T-lymphocyte maturation;active in childhood

fluid balance

returns excess tissue fluid to the bloodstream

lymphocyte production

produce white blood cells for immunity

filtration

removes pathogen and debris from lymph and blood

immunity

protects the body from disease

natural (innate) immunity

Non-specific defenses present at birth

acquired (adaptive) immunity

specific immune response developed after exposure

passive acquired immunity

antibodies received from another source

active acquired immunity

antibodies produced by the body

natural acquired immunity

results from infection

artificial acquired immunity

results from vaccination

immune response

body’s reaction to antigens

relevance to nutrition

adequate nutrients support immune cell production