MC Flashcards
Connective tissues typically have…
Relatively few cells and a large amount of extracellular matrix
An example of a properly functioning homeostatic control system is seen when…
The kidneys excrete salt into the urine when dietary salt levels rise
In a survivably cold environment, an ectoderm is more likely to survive an extended period of food deprivation than would an equally sized endotherm because the ectotherm…
Invests little energy in temperature regulation
In mammals this response is known as fever, but it is known to raise body temperature in other bacterially infected animals, including lizards, fishes, and cockroaches…
A change in the body’s temperature regulation
Upon activation by stomach acidity, the secretition of the parietal cells…
Initiate the digestion of protein in the stomach
Inaccurate diagnosis of acid reflux disorders and gastric ulcers has been improved by?
The diagnosis and treatment of H. Pylori treatment
Cattle are able to survive on a diet consisting almost entirely of plant material because…
They have cellulose-digesting, symbiotic microorganisms in chambers of their stomach
Hypoglycemia, or low levels of glucose in blood of a healthy human, is “corrected” by a(n)…
Increase in the secretion of glucagon
After several weeks of exercise, a human athletes’s resting heart rate is typically lower than before because…
The stroke volume has increased
The velocity of blood flow is the lowest in capillaries because…
The total cross-sectional area of the capillaries is greater than the total cross-sectional area of the arteries or any part of the circulatory
A species that has a normal resting systolic blood pressure of >260mmHg is likely to be?
An animal that has a very long distance between its heart and it’s brain
Carbon dioxide levels in the blood and cerebrospinal fluid affect its pH. This enables the organism to sense a disturbance in gas levels as…
The medulla oblongata, which is in contact with cerebrospinal fluid, monitors pH and uses this measure to control breathing.
Histamines trigger dilation of nearby blood vessels as well as an increase in their permeability, producing…
All of the signs of a Major Infection
A patient who can produce anti-bodies against some bacterial pathogens, but not against viral infections, probably has a disorder in his?
B cells
Immunological memory accounts for?
The ancient observation that someone who had recovered from the plague could safely care for those newly diseased
