Respiratory system part 1

Question 1

Nasopharnyx

Answer 1

• Located behind the nasal cavity
• connects the nose to the mouth and contains the adenoid or the nasopharyngeal tonsil
• The adenoid is a mass of lymphoid tissue that produces lymphocytes…a substance that reacts to bacteria or other disease causing microorganisms

Question 2

The Nose

Answer 2

• Made of cartilage, bones, muscles and skin and is located in the front of the nasal cavity
• Consists of nostrils that have small hairs. These small hairs screen harmful contaminants such as dust, pathogens, and other particles before they reach the lungs

Question 3

The Nasal Cavity

Answer 3

• A hollow space located above and behind the nose
• Its function is to purify, moisten, and warm air before it goes to the lungs
• Its walls are lined with a protective mucous membrane that is composed of cells called epithelial cells
• Each Epithelial cell has a cilia, a hair like extension that helps purify the air from contaminants

Question 4

The Oral Cavity

Answer 4

• May be used to replace the function of the nasal cavity when needed
• But does NOT moisten the air entering the lungs
• Also lacks hair and protective mucous

Question 5

The epiglottis

Answer 5

• A flap tissue gate under the oropharynx that acts like a switch between the trachea and the esophagus
• Opens the trachea and closes the esophagus to let air into the lungs
• Prevents fluids or solid materials from going to the trachea/lungs
  
  • Causes choking

Question 6

Functions of the Respiratory system

Answer 6

• Helps expel CO2
  
  • protect the body against disease-causing contaminants by clearing air passageway
  • in production of sounds and houses cells that detect smell
  • regulate the balance in acid and base in body tissues