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BONUS After a meal, ectotherms often situate themselves in a warm and or sunny spot.  This can be critical to the health of the animal.  Why is this process important?

Answer the questions using the accompanying figure. Match the appropriate part of the human respiratory system with its correct label.

In humans, blood cells are produced in the ____.​

Diffusion is slow over distances of a few millimeters, making it an unsuitable mechanism by which large animals exchange gases and nutrients between the external and internal environments.​

In the collecting ducts of the kidney, antidiuretic hormone promotes water conservation by increasing the assembly of [x]. (be specific)

As filtrate moves through the ____ in mammals, it generally undergoes a dramatic decrease in osmolarity.​

Stimuli for the activation of the RAS pathway include

Why is proper ventilation important for a respiring animal?​

Metanephridia differ from protonephridia in all of the following ways EXCEPT that:

Produced in the posterior pituitary, ____ increases water absorption in the kidneys.​