Most Amphibians and Land-Dwelling Invertebrates

question 30

Multiple Choice

Most amphibians and land-dwelling invertebrates

• A)are ectothermic organisms.
• B)alter their metabolic rate to maintain a constant body temperature of 37°C.
• C)have a net loss of heat across a moist body surface, even in direct sun.
• D)are thermoconformers only when they are in water.
• E)become more active when environmental temperatures drop below 15°C.

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Definitions:

Pulmonary Circulation

The passage of blood from the heart to the lungs and back to the heart, where it is oxygenated and rid of carbon dioxide.

Pulmonary Arteries

The arteries that carry deoxygenated blood from the heart to the lungs, where it is oxygenated before being returned to the heart.

Lungs

Organs in the respiratory system involved in the exchange of oxygen and carbon dioxide between the body and the environment.

Cerebral Arterial Circle

Also known as the Circle of Willis, this is a circulatory anastomosis that supplies blood to the brain and surrounding structures.