Understanding Diseases and Disorders

Mr. Dunan explains the difference between infectious and non-infectious diseases. Non-infectious diseases can be genetic, due to malnutrition, environmental, or lifestyle factors. Genetic disorders are inherited, while malnutrition and environmental factors like toxins can lead to diseases. Lifestyle choices such as diet and exercise also play a role. Infectious diseases are caused by microorganisms like bacteria and viruses, which enter the body through various means. The video emphasizes prevention and understanding of these diseases.

What is the primary characteristic that differentiates a disease from an injury?

• A disease is always contagious.

• A disease causes ongoing harm with specific symptoms.

• An injury is always genetic.

• A disease is caused by external factors only.

Which of the following is an example of a genetic disorder?

• Malaria

• Goiter

• Huntington's disease

• Scurvy

How are genetic disorders typically passed on within a family?

• By lifestyle choices

• Through DNA from parents

• Via dietary habits

• Through environmental exposure

What is a common symptom of malnutrition-related diseases?

• High fever

• Distended abdomen

• Joint pain

• Skin rash

Which vitamin deficiency leads to scurvy?

• Vitamin B

• Vitamin A

• Vitamin D

• Vitamin C

What is a common cause of non-infectious diseases related to lifestyle?

• Viral infections

• Diet and exercise choices

• Bacterial infections

• Genetic mutations

Which of the following is an example of a non-infectious disease caused by environmental factors?

• Skin cancer

• Influenza

• Tuberculosis

• Chickenpox

What type of microorganisms are responsible for causing infectious diseases?

• Only bacteria

• Only viruses

• Microorganisms like bacteria, viruses, and fungi

• Only fungi

How do infectious diseases typically enter the human body?

• Through skin contact only

• Only through the nose

• Through any body orifice

• Only through the mouth

What is the primary method to prevent the spread of viral infections?

• Increased sugar intake

• Regular exercise

• Vaccinations

• Antibiotics