Immune system

Definition

The immune system is the body's defense mechanism against infections, diseases, and foreign substances. It involves various organs, cells, and proteins working together to identify and neutralize harmful pathogens.

5 Must Know Facts For Your Next Test

1. Macronutrients such as fats play a crucial role in supporting the immune system by providing essential fatty acids that are pivotal for cell membrane integrity.
2. Omega-3 and Omega-6 fatty acids are important for modulating inflammatory responses within the immune system.
3. A diet high in trans fats can negatively impact immune function by promoting inflammation and oxidative stress.
4. Adequate nutrition is vital for maintaining pulmonary health as deficiencies can impair respiratory function and weaken the immune response to respiratory infections.
5. Vitamins A, C, D, and E are essential micronutrients that support various aspects of the immune system including antioxidant protection and cellular repair.

Review Questions

• How do Omega-3 fatty acids affect the immune system's inflammatory response?
• Why is it important to avoid high intake of trans fats with regard to immune health?
• Which vitamins are crucial for supporting the immune system?

Related terms

Macronutrients:

Nutrients required in large amounts that provide energy; include carbohydrates, proteins, and fats.

Inflammation:

A biological response of body tissues to harmful stimuli such as pathogens or damaged cells.

Antioxidants:

Molecules that inhibit oxidation and combat free radicals in the body, protecting cells from damage.