Exam 43: Animal Transport Systems

Which of the following would be the consequence if the direction of water flow over the gills of a fish was reversed, moving water inward past the operculum, past the gills, then out the mouth?

While jogging, a person has a stroke volume of 130 mL/beat and a heart rate of 120 beats per minute. Their resting stroke volume is 70 mL/beat and resting heart rate is 60 beats per minute. Which answer best describes the effect of jogging on the person's cardiac output?

The velocity of blood flow lowest in capillaries because ________.

Which of the following is the correct sequence of blood flow in birds and mammals?

Atrial systole ________.

A researcher investigating the effect of temperature on hemoglobin saturation collected the data represented in the graph. Which of the following claims is most consistent with the data?

Which of the following are the only vertebrates in which blood flows directly from respiratory organs to body tissues without first returning to the heart?

Which of the following respiratory systems is independent from a fluid-based circulatory system?

Which of the following is an adaptation of the avian lung that best helps meet the metabolic demands of flight?

The bar-headed goose is one of the highest flying birds in the world, having been observed flying at over 27,000 feet. Which of the following adaptations would provide an advantage for flying at high altitudes?

Which biological membranes must atmospheric molecules of oxygen cross to become bound to hemoglobin for transport in mammals?

A decrease of blood pH from 7.4 to 7.2 would cause hemoglobin to ________.

Which type of circulatory system is most likely present in organisms with a circulating body fluid that is distinct from the fluid that directly surrounds the body's cells?

Which of the following statements correctly compares respiration in fish and in mammals?

Which of the following indicates a diagnosis of hypertension in adults?

Compared with the interstitial fluid that bathes active muscle cells, blood reaching these cells in arterioles has a ________.

What is the partial pressure of oxygen (PO₂) when the air in a testing chamber is mixed so that its oxygen content is 10% and its overall air pressure is 400 mm Hg?

Organisms belonging to a species with a high resting cardiac output are most likely to have which of the following characteristics?

Which of the following examples illustrates the process of countercurrent exchange?

During aerobic exercise, the partial pressure of oxygen in muscle cells will ________, thus the rate of diffusion of oxygen into the muscle tissue from the blood will ________.