Human Respiratory System Quiz

Heart Function and Structure

• The left ventricle pumps blood to the rest of the body.
• The inferior vena cava is the correct answer, not specified why.
• The Purkinje fibers are not part of the intrinsic conduction system of the heart.
• Ventricular contraction occurs during systole.

Heart Blood Supply

• The coronary artery supplies blood to the myocardium itself.
• The coronary sulcus is the term for the grooves on the surface of the heart that contain coronary vessels.
• The interventricular septum separates the left and right sides of the heart.

Blood Type Classification

• The Rh system determines the presence or absence of Rh antigens in blood type classification.

Blood Vessels

• Vasoconstriction is the decrease in the size of the lumen of a blood vessel.
• The tunica media is the layer of the blood vessel responsible for vasoconstriction and vasodilation.
• The tunica externa is not the outermost layer of a blood vessel; it's the tunica adventitia.
• Elastic arteries have a specific function, but it is not specified.

Respiratory System

• The nasal cavity is not part of the lower respiratory system.
• The right lung has superior lobe, middle lobe, and inferior lobe, with an oblique fissure.
• The respiratory membrane serves as a barrier for gas exchange between alveolar air and blood.
• Asthma is characterized by smooth muscle spasms in bronchioles causing airway constriction.

Circulatory System

• The vestibular fold or false vocal cords have a function, but it is not specified.
• Venous valves prevent backflow of blood.
• The skeletal pump aids in venous blood flow to the heart.
• The thoracoabdominal pump assists in venous blood flow to the heart.
• Atherosclerosis is characterized by plaque buildup in the inner lining of arteries.

Lymphatic System

• The lymphatic system is responsible for drainage of excess interstitial fluid and immune responses.
• The immune response involves invasion, recognition, production and amplified defense, attack and destroy, and slowdown and reserve.
• T cells conduct cell-mediated responses.
• The thymus is the site where T cells mature.
• Lymphocytes are primarily produced in the red bone marrow.
• Lymphatic capillaries drain excess interstitial fluid.
• Lymph nodes filter lymph along lymphatic vessels.