Exam 21: Unifying Concepts of Animal Structure and Function

Homeostasis ______.

Which of the following animals is an ectotherm?

Which of the following is a source of water loss in humans?

Which of the following is a physiological response that takes place in many animals when they get too hot?

In animals,individual cells are grouped into _____.

Which of the following is true of a typical skeletal muscle?

The vertebrate kidney helps to keep the acidity of the body fluids constant by varying the amount of hydrogen ions (H⁺)it secretes into the urine.You can confidently predict that this aspect of kidney function will be controlled by ______.

Use the following information to answer the following question(s). The dune-burrowing spider Seothyra sp. lives in the Namib desert on the southwestern coast of Africa. These spiders build silk-lined burrows with a sticky silk mat at the entrance to trap insect prey. While foraging during the day, the spider remains concealed in its burrow and shielded from direct sunlight when prey are not present. During the day, environmental temperatures vary from 17 to 73°C (63-164°F). If a spider is prevented from retreating into its burrow, it shows signs of thermal stress at 49°C, whereas unrestrained spiders continue to forage at temperatures above 65°C. In addition, spiders respond more quickly to prey stimuli during the hottest times of the day and capture prey in significantly less time when temperatures are above 49°C. The captured arthropods (prey) tend to succumb more quickly to hot surface temperatures; they are more lethargic and struggle less when captured at the high temperature ranges. -When spiders show signs of thermal stress,this is an indication that they are unable to ______.

Use the following information to answer the following question(s). The dune-burrowing spider Seothyra sp. lives in the Namib desert on the southwestern coast of Africa. These spiders build silk-lined burrows with a sticky silk mat at the entrance to trap insect prey. While foraging during the day, the spider remains concealed in its burrow and shielded from direct sunlight when prey are not present. During the day, environmental temperatures vary from 17 to 73°C (63-164°F). If a spider is prevented from retreating into its burrow, it shows signs of thermal stress at 49°C, whereas unrestrained spiders continue to forage at temperatures above 65°C. In addition, spiders respond more quickly to prey stimuli during the hottest times of the day and capture prey in significantly less time when temperatures are above 49°C. The captured arthropods (prey) tend to succumb more quickly to hot surface temperatures; they are more lethargic and struggle less when captured at the high temperature ranges. -Based on the information in the paragraphs,spiders are ______.

Which of the following is most likely to be responsible if,when your blood sugar level rose,the level went back down?

Which of the following statements apply to freshwater fish?

A diuretic is a substance that ______.

In humans,goosebumps are a vestige of a mammalian adaptation related to ______.

A physiologist is a biologist who studies the ______.

One function of this organ system is _____.

When body temperature is too low,which of the following occurs?

What is the name of the functional unit of the kidney?

Which is the most abundant kind of tissue in most animals?

Examine the figure below,which shows negative feedback in a thermostat.If the room becomes too warm,the next thing that will occur is ______.

Marine animals that have body fluids with a solute concentration equal to that of the surrounding seawater are said to be ______.