Test#1: term 2: Respiratory system, sec 3

Question 1

Anatomy of the respiratory system:

Answer 1

1. Nasal Cavities
2. Pharynx
3. Larynx
4. Trachea
5. Bronchi
6. Bronchioles
7. Alveoli

Question 2

Nasal Cavities:

Answer 2

• Air goes through nostrils –> enter the nasal cavities
• Small hairs called cilia, filter dust particles
• Small blood vessels to warm the air and mucous to moisten the air.

Question 3

Pharynx:

Answer 3

• Part of respiratory and digestive system

- Food and air passes through

Question 4

Larynx:

Answer 4

• Made mostly of cartilage
• Connects pharynx to trachea
• Epiglottis shuts opening of trachea during swallowing and allows food to go through esophagus.
• Trachea contains vocal cords, vibrate when exhale to produce sound.

Question 5

Trachea:

Answer 5

• Tube connects larynx to bronchi
• Located in front of esophagus
• Made of rings of cartilage –> keep open at all times and give it strength.
• Lined with mucous and cilia to push dust particles towards mouth and away from lungs.

Question 6

Bronchi:

Answer 6

• Trachea splits into 2 bronchi; one tube towards left lung and other towards right lung.
• Made of cartilage, cilia and mucous

Question 7

Bronchioles:

Answer 7

• Bronchi divide into smaller tubes.

- Each bronchiole ends in a cluster of aveoli.

Question 8

Aveoli:

Answer 8

• Small bags surrounded by capillaries
• Aveoli and capillary membranes are so thin, they allow certain substances to pass through.
• Capillaries = tiny blood vessels whose membrane is made up of only one row of cells.