Author: Anonymous

Each red blood cell is shaped as a biconcave disk. This allows it to

In the mammalian heart, the systemic and pulmonary circuits ____.​

The ____ are the initial branches of the trachea that lead into each lung.​

Plasma makes up approximately ____ percent of the total blood volume.​

Kidneys regulate

Osmoconformers tend to live in environments with variable solute concentrations.

Amphibians often use ____ as a respiratory surface.​

BONUS Your kidneys filter your blood about _____ times per day and reabsorb _____% of the water entering the renal tubules, _____% of the electrolytes in the blood, and _____% of the glucose and amino acids that were filtered out of the blood in the glomerulus.

These are the only vertebrates in which blood flows directly from respiratory organs to body tissues without first returning to the heart.

Imagine that you have been assign the task of describing a new mammalian species.  You note that this species has mutated so RBCs no longer go through final stage of maturation.  Predict how this might affect the species.