Circulatory System in Biology Reviewer 6

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What is the primary function of the respiratory system?

Exchange oxygen and carbon dioxide (correct)

Absorb nutrients

Regulate body temperature

Produce hormones

Where does the exchange of gases between the external environment and the lungs primarily occur?

Alveoli (correct)

Bronchi

Trachea

Nose

Which process involves the transport of oxygen to body cells and collection of carbon dioxide?

Breathing

Use of oxygen

Internal respiration (correct)

External respiration

What is the function of the upper respiratory system?

Entry point of inhaled air Signup and view all the answers

Where does the actual exchange of gases take place in the respiratory system?

Alveoli Signup and view all the answers

What is the function of the epiglottis in the respiratory system?

Closing the trachea during swallowing Signup and view all the answers

Which structure is responsible for warming and moistening the air?

Nasal cavity Signup and view all the answers

In which animals do some breathe through their skin which needs to be kept moist for gas exchange?

Earthworms Signup and view all the answers

What is the main function of the circulatory system?

To carry oxygen to cells Signup and view all the answers

Which component of blood is responsible for defending the body from infections?

Leukocytes (WBC’s) Signup and view all the answers

What is the function of thrombocytes (platelets) in the blood?

Prevent blood loss by clogging injured blood vessels Signup and view all the answers

Which blood vessels carry deoxygenated blood away from the heart?

Arteries Signup and view all the answers

What is the main function of the heart in the circulatory system?

To act as a pumping station Signup and view all the answers

What is the function of vena cava in the circulatory system?

Receives deoxygenated blood from all parts of the body Signup and view all the answers

Which chamber of the heart pumps oxygenated blood to the body?

Left ventricle Signup and view all the answers

What is the function of valves in the heart?

Prevent the back flow of blood Signup and view all the answers

Which vessel carries deoxygenated blood to the lungs for oxygenation?

Pulmonary artery Signup and view all the answers

What is the purpose of the septum in the heart?

Prevent blood from flowing between atria or ventricles Signup and view all the answers