PRE - TEST: RESPIRATORY AND CIRCULATORY SYSTEM

What important process happens in the netlike structure labeled A?

• Nitrogen and oxygen are exchanged.

• Carbon dioxide and oxygen are exchanged.

• Nitrogen and carbon dioxide remain constant.

• Carbon dioxide and oxygen diffuse into the blood.

What structure of the Respiratory System is labeled B in the diagram?

• Alveolus

• Bronchi

• Bronchiole

• Pharynx

Why is the lung considered as the primary organ of the respiratory system?

• Because it is the largest organ of the system.

• Because it has two parts: the right and left lungs.

• Because it is located near the middle of the chest cavity.

• Because it contains the alveoli that is responsible for gas exchange.

Which of the following statements about the human respiratory system is false?

• The bronchioles branch into bronchi.

• Alveolar ducts connect to alveolar sacs.

• When we breathe in, air travels from the pharynx to the trachea.

• Gas exchange between the lungs and blood takes place in the alveolus.

Which structure is responsible for the movement of the chest cavity during the breathing process?

• Bronchi and trachea

• Larynx and pharynx

• Nasal cavity and pharynx

• Diaphragm and rib muscle

Which is the order of airflow during inhalation?

• Nasal cavity, trachea, larynx, bronchi, bronchioles, alveoli.

• Nasal cavity, larynx, trachea, bronchi, bronchioles, alveoli.

• Nasal cavity, larynx, trachea, bronchioles, bronchi, alveoli.

• Nasal cavity, trachea, larynx, bronchi, bronchioles, alveoli.

Which of the following statements about the circulatory system is false?

• Blood in the aorta is oxygenated.

• Blood in the pulmonary vein is oxygenated.

• Blood in the pulmonary artery is oxygenated.

• Blood in the inferior vena cava is deoxygenated.

Which is the main organ of circulation?

• Blood

• Heart

• Capillary

• Blood vessels

How do arteries differ from veins?

• Arteries carry blood.

• Arteries are thin-walled and are used for gas exchange.

• Arteries have thicker wall layers to accommodate the changes in pressure from the heart.

• Arteries have thinner wall layers and valves and move blood by the action of skeletal muscle.

Which blood vessel carries blood from all parts of the body to the heart?

• Aorta

• Vena cava

• Pulmonary vein

• Pulmonary artery