Bio 126: Cardiovascular And Respiratory

Consider this diagram of blood circulation in a fish. (The image shows a diagram of blood circulation in a fish, including the heart, blood vessels in the gills, blood vessels in the body tissues, and blood vessels connecting these structures. Arrows indicate that blood flows from the heart to the gills; from the gills to the body tissues; from the body tissues back to the heart. The structures are color-coded. The heart is blue. Blood entering the gills is blue. Blood leaving the gills is red. Blood entering the body tissues is red. Blood leaving the body tissues is blue. Blood entering the heart is blue.) Which of the following describes the path taken by oxygen-rich blood?

Which three statements are true of blood flowing through a capillary at the location marked by the green circle?

Which of the following best describes an artery?

Which statement regarding the mammalian heart is correct?

Which statement about human blood vessels is correct?

The smallest airway through which inspired air passes before gas exchange occurs in the mammalian lungs is the _____.

The amount of oxygen bound to hemoglobin _____.

Which of the following respiratory systems is not closely associated with a blood supply?

Blood returning to the mammalian heart in a pulmonary vein drains first into the

When you hold your breath, which of the following blood gas changes first leads to the urge to breathe?

If a molecule of CO2 released into the blood in your left toe is exhaled from your nose, it must pass through all of the following except

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

Which of the following would increase the amount of oxygen undergoing net diffusion from the lungs into the blood?

Select the correct statement about capillary beds.

Why does the velocity of blood slow greatly as blood flows from arterioles into capillaries?