How Do We Protect Ourselves?

Question 1

Pathogen

Answer 1

A foreign agent.

Question 2

Lymphatic System in Immunity

Answer 2

Transport system for cells of the immune system & antigens to move around the body.

Question 3

Physical Immunity Barriers

Answer 3

Skin, mucous membranes, saliva, tears, stomach acid, cilia in respiratory system.

Question 4

Chemical Immunity Barriers

Answer 4

Histamine, cytokines, complement (stimulate lysis or invading pathogen cells), interferons (anti-viral activity).

Question 5

Inflammation

Answer 5

Local tissue response to damage. Aims to rid body of debris/invader & prevent further pathogen entry.
Four features: redness, heat, swelling, pain.

Question 6

Functions of Lymphatic System

Answer 6

Fluid balance, fat absorption, defence.

Question 7

Lymph Composition

Answer 7

Water & solutes from plasma (ions, nutrients, gasses & som proteins) & cells (enzymes, hormones, waste products).
Returns to circulatory system via veins, essential for fluid balance.

Question 8

Lymphatic System Disorders

Answer 8

Tonsilitis, lymphoma, Hodgkin’s disease, Non-Hodgkin’s disease, bubonic plague.