Animal Physiology Quiz

Which chamber of the heart receives oxygenated blood from the lungs?

• Right atrium

• Left atrium

• Right ventricle

• Left ventricle

What component of blood is responsible for oxygen transport?

• Plasma

• Platelets

• Red blood cells

• White blood cells

What is the function of valves in the heart?

• Pump blood

• Prevent backflow

• Oxygenate blood

• Filter blood

The pulmonary artery carries:

• Oxygenated blood to lungs

• Deoxygenated blood to heart

• Oxygenated blood to body

• Deoxygenated blood to lungs

Which vessel has the thickest muscular wall?

• Vein

• Capillary

• Artery

• Venule

The primary site of gas exchange in the lungs is the:

• Bronchi

• Trachea

• Alveoli

• Pleura

Which muscle is crucial for inhalation?

• Heart

• Diaphragm

• Trapezius

• Sternum

Hemoglobin binds to oxygen in:

• RBC cytoplasm

• Alveoli

• Plasma

• Bronchioles

Carbon dioxide is mainly transported in blood as:

• Free CO₂

• Bicarbonate ions

• Bound to leukocytes

• Nitric oxide

What structure connects the larynx to the bronchi?

• Nasal cavity

• Pharynx

• Trachea

• Epiglottis