Animal Circulatory System
Biology ⇒ Animal Biology
Animal Circulatory System starts at 9 and continues till grade 12.
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See sample questions for grade 11
Describe the difference between an open and a closed circulatory system.
Describe the path of blood flow through the mammalian heart, starting from the vena cava.
Describe the role of the hepatic portal vein in the circulatory system.
Describe the role of valves in the circulatory system.
A patient is diagnosed with a defect in the semilunar valves of the heart. Explain how this defect could affect blood flow and overall circulatory efficiency.
A researcher measures the heart rate and stroke volume of a mammal and finds the heart rate is 80 beats per minute and the stroke volume is 70 mL. Calculate the cardiac output in liters per minute.
A certain mammal is found to have a mutation that causes its hemoglobin to have a much lower affinity for oxygen. Predict and explain the physiological consequences of this mutation on the animal's circulatory and respiratory systems.
A patient has a blockage in the coronary arteries. Explain the likely effects on the heart tissue and the overall circulatory system.
Which blood vessel returns oxygenated blood from the lungs to the heart?
(1) Pulmonary artery
(2) Pulmonary vein
(3) Aorta
(4) Vena cava
Which chamber of the human heart receives deoxygenated blood from the body?
(1) Left atrium
(2) Right atrium
(3) Left ventricle
(4) Right ventricle
Which of the following animals has a closed circulatory system?
(1) Earthworm
(2) Grasshopper
(3) Hydra
(4) Sponge
Which of the following animals has a four-chambered heart?
(1) Crocodile
(2) Lizard
(3) Frog
(4) Fish
Fill in the blank: The ________ circuit carries blood from the heart to the lungs and back.
Fill in the blank: The ________ node acts as the natural pacemaker of the heart.
Fill in the blank: The ________ vein brings deoxygenated blood from the lower body to the heart.
Fill in the blank: The fluid portion of blood is called ________.
True or False: Capillaries have the thinnest walls of all blood vessels.
True or False: Insects have an open circulatory system.
True or False: The aorta carries blood from the left ventricle to the rest of the body.
True or False: The lymphatic system is part of the circulatory system.
