1.Meaning of Homeostasis:
A) contributor and provider
B) expand * C) same or constant
D) receiver
2.What is the normal pH value for body fluid?
A) 7.15-7.25 * B) 7.35-7.45
C) 7.55- 7.65
D) 7.00-7.35
E) 6.5-7.5
3.An example of the urinary system working with the respiratory system to regulate blood pH would be
A) When you hold your breath the kidneys will remove CO2 from your blood
B) If you exercise a lot your urine will become more acidic * C) If you develop emphysema the kidneys will remove fewer bicarbonate ions from circulation
D) If you hyperventilate the kidneys will counteract the alkalinity by adding hydrogen ions into the blood stream
E) None of the above-the urinary system never works with the respiratory system
4.The urge to breathe comes in direct response to:
A) How long it has been since you last took a breath
B) The oxygen concentration of your surrounding environment
C) The buildup of nitrogen within your blood stream * D) The pH of your blood
E) The buildup of blood pressure that occurs when you don't breathe
5.In response to a bacterial infection my body's thermostat is raised. I start to shiver and produce more body heat. When my body temperature reaches 101 degrees, I stop shivering and my body temperature stops going up. This is an example of: * A) Negative feedback
B) A malfunctioning control system
C) Positive feedback
D) A negative impact
6.Which of the follow is an example of a positive feedback?
A) Shivering to warm up in a cold winter storm
B) A cruise control set on your car applies more gas when going up a hill
C) You sweat on a hot summer's day and the blood vessels in your skin vasodilate * D) You get cut and platelets form a clot. This in turn activates the fibrin clotting system and more blood forms clots
7.Where is the body's "thermostat" found? * A) Within the nervous system, in the Hypothalamus
B) Within the integumentary system, in the skin
C) Within the brain, in the