Respiratory system

Gas exchange takes place in structures called:

• Alveoli

• Pulmonary Phalanges

• Uvula

• VanDer Moof Sacs

Gas exchange in the lungs happened primarily by the process of:

• Diffusion

• Endocytosis

• Apoptosis

• Mycellium

The diaphragm contracts during

• Inhalation

• Exhalation

Air is drawn into the lungs because:

• of the contraction of the diaphragm

• of the expansion of the thoracic cavity

• of the relaxation of the diaphragm

• of the reduction of the thoracic cavity

The brain knows we need to breathe faster by monintoring the amount of _____ in blood.

• CO₂

• O₂

• Glucose

• Lactic Acid

Sound is made when air passes over flaps of cartilage in the

• Trachea

• Pharynx

• Larynx

• Glottis

Inhalation happens because:

• the pressure of the thoracic cavity increases

• the pressure of the thoracic cavity decreases

• the volume of the thoracic cavity decreases

• the volume of the thoracic cavity increases

Small branches of tubes that pass through the lungs are called:

• Pulomonary Phalanges

• Bronchi

• Bronchioles

• Capillaries

Given the following structures:
1. larynx
2. nasal cavity
3. pharynx
4. trachea
Which of the following is the correct order that air would flow during inhalation. 

• 1,2,3,4
• 2,3,1,4
• 2,1,3,4
• 4,2,3,1 

The air sacs that are covered with capillaries where gas exchange takes place

• bronchi
• lungs
• oxygen
• alveoli