Nonspecific/Innate Immune System (A&P)

The nonspecific/innate immune system protects the body against _

• Specific viruses

• Specific bacteria

• A wide variety of different pathogens

Which of the following are barrier defenses of the nonspecific immune system? Select 3

• The epidermis

• Mucous

• Acid

• Inflammation

• Fever

Which of the following are cellular defenses of the nonspecific immune system? Select 2

• Phagocytes

• Natural-killer (NK) cells

• Interferons

• Complement system

• Antimicrobial proteins

Which of the following are molecular defenses of the nonspecific immune system? Select 3

• Acid

• Mucous

• Interferons

• Complement system

• Antimicrobial proteins

Which of the following are homeostatic mechanisms of the nonspecific immune system? Select 2

• Fever

• Inflammation

• Interferons

• Complement system

• Antimicrobial proteins

Tags

NGSS.HS-LS1-3

Where is the epidermis found?

• The outermost layers of the skin

• The deeper layers of skin

• All internal epithelial linings

• The stomach

• The vagina

Tags

NGSS.HS-LS1-4

_ of the epidermis form a physical barrier against pathogens, preventing their access to the blood stream

• Keratinocytes

• Melanocytes

• Hepatocytes

• Myocytes

• Neurons

Which characteristic of mucous allows for its function in the immune system?

• Its low pH

• Its high pH

• Its stickiness

• Its ability to detect infected cells

• Its ability to detect cancerous cells

Where is mucous found?

• Lining the digestive tract

• Lining the respiratory tract

• All internal epithelial linings

• All external epithelial linings

• Lining the reproductive tract

How do mucous and WBCs work together?

• Mucous traps pathogens --> WBCs destroy them

• WBCs trap pathogens --> mucous destroys them

• They both trap pathogens

• They both destroy pathogens