Figure 34.1 Fishes That Have Swim Bladders Can Regulate Their Density And

question 93

Multiple Choice

Figure 34.1
Fishes that have swim bladders can regulate their density and, thus, their buoyancy. There are two types of swim bladder: physostomus and physoclistus. The ancestral version is the physostomus version, in which the swim bladder is connected to the esophagus via a short tube (Figure 34.1) . The fish fills this version by swimming to the surface, taking gulps of air, and directing them into the swim bladder. Air is removed from this version by "belching." The physoclistus version is more derived, and has lost its connection to the esophagus. Instead, gas enters and leaves the swim bladder via special circulatory mechanisms within the wall of the swim bladder.
-The presence of a swim bladder allows the typical ray-finned fish to stop swimming and still

• A) effectively circulate its blood.
• B) be highly maneuverable.
• C) use its lateral line system.
• D) use its swim bladder as a respiratory organ.
• E) not sink.

Understand preventive measures for recurrent urinary system infections.

Learn about common causes and initial symptoms of major kidney conditions and their diagnostic criteria.

Understand the terminology related to renal anatomy and physiology.

Identify and match different types of urinary incontinence and their management strategies.

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