Respiration and Circulation

Carbon dioxide waste is transported from working cells in the body to the lungs in the form of 

• bicarbonate ions (HCO3)
• oxygen (O2)
• dissociated carbon and oxygen
• glucose and water

Tags

NGSS.HS-LS1-7

NGSS.HS-LS2-5

Which of the following contribute to the gas exchange in the alveoli?
I.  Low Partial pressure of O2 in the pulmonary capillaries when compared with inhaled air
II.  Low partial pressure of CO2 in the pulmonary capillaries when compared with inhaled air

• Both I and II
• Only I
• Only II
• None of these

Tags

NGSS.HS-LS2-3

Which of the following does NOT characterize the human respiratory system?

• the trachea branches into two bronchi
• gas exchange takes place across alveolar capillary membrane
• contraction of the diaphragm muscle expands the thoracic cavity and permits the lungs to fill
• none of these

Which of the following is the correct sequence of the passages through which air travels during inhalation?

• pharynx --> trachea --> lungs --> bronchi --> alveoli
• larynx --> pharynx --> bronchi --> lungs --> alveoli
• larynx --> pharynx --> trachea --> bronchi --> alveoli
• pharynx --> larynx --> trachea --> bronchi --> alveoli

Which of the following is a key characteristic of maximal gas exchange for all species?

• humidity is more important than surface area
• lungs are most efficient organ for gas exchange
• gas exchanged is based on pressure
• gas exchange is a passive process

Tags

NGSS.HS-LS2-5

Which of the following is true? 

• deoxygenated blood is found in all veins
• all arteries contain oxygenated blood
• pulmonary arteries carry deoxygenated blood
• the aorta contains deoxygenated blood

There are approximately  ___ hemoglobin molecules in one erythrocyte.

• 10
• 1,000
• 100,000
• 1,000,000

Which of the following places the organs and vessels are in the correct order for circulation?

• left ventricle, pulmonary vein, aorta, right atrium
• right ventricle, pulmonary artery, lungs, left atrium
• aorta, vena cava, right ventricle, tricuspid valve
• pulmonary vein, lungs, left ventricle, aorta

Which of the following is NOT a white blood cell?

• leukocytes
• erythrocytes
• neutrophils
• monocytes

Breathing in humans is usually regulated by 

• the number of red blood cells
• the amount of hemoglobin in the blood
• inherent genetic control
• CO2 levels

Tags

NGSS.HS-LS1-3