A.1.3.1 Cardiovascular System Transport

Multiple Choice

Which of the following is NOT transported by the cardiovascular system?

• Nutrients

• Hormones

• Digestive enzymes

• Gasses

Multiple Choice

Which component of blood is primarily responsible for transporting oxygen from the lungs to tissues?

• Plasma

• Platelets

• White blood cells

• Red blood cells

Multiple Choice

What substances are found in plasma according to the diagram?

• Proteins, ions, nutrients, wastes, gases, water

• Red blood cells, white blood cells, platelets

• Only water and ions

• Only proteins and nutrients

Multiple Choice

Which of the following best describes the structure of veins compared to arteries?

• Veins have thicker muscular walls than arteries.

• Veins have valves to prevent back-flow and are less muscular than arteries.

• Veins carry blood away from the heart.

• Veins have no inner layer.

Multiple Choice

Which blood vessel carries oxygen-rich blood from the lungs to the heart?

• Pulmonary artery

• Pulmonary vein

• Aorta

• Vena cava

Multiple Select

Which of the following statements about blood pressure is/are correct?

• Systolic pressure is measured when the ventricles are relaxing.

• Diastolic pressure is the lowest pressure in the arteries.

• Healthy adults should have a systolic pressure between 90-120 mmHg.

• Arterial pressure is not important for cardiovascular health.

Multiple Choice

During exercise, blood vessels to digestive organs ___ and blood vessels to muscles ___.

• dilate; constrict

• constrict; dilate

• dilate; dilate

• constrict; constrict

Multiple Choice

Which organ receives the largest increase in blood flow during exercise compared to rest?

• Muscle

• Brain

• Heart

• Liver

Multiple Choice

Which factors are used to determine maximal oxygen uptake (VO2 max) according to the Fick equation?

• Maximum cardiac output and maximum arteriovenous oxygen difference

• Heart rate and stroke volume

• Blood pressure and heart rate

• Stroke volume and blood pressure

Multiple Choice

Which of the following statements best describes the effect on cardiac output as an individual reaches maximal exercise?

• The increase in cardiac output is due solely to increased stroke volume.

• Cardiac output remains unchanged due to increased heart rate.

• The increase in cardiac output is due solely to increased heart rate.

• Cardiac output remains unchanged due to constant stroke volume.

Multiple Choice

What are the main substances transported by the cardiovascular system to perform necessary bodily functions?

• Nutrients, hormones, gasses, heat, and waste

• Proteins, carbohydrates, and fats

• Enzymes, vitamins, and minerals

• Water, salt, and glucose