Select the correct statement about factors that influence blood pressure.
A) An increase in cardiac output corresponds to a decrease in blood pressure, due to the increased delivery.
B) Systemic vasodilation would increase blood pressure, due to diversion of blood to essential areas.
C) Excess protein production would decrease blood pressure.
D) Excess red cell production would cause a blood pressure increase.
D) Excess red cell production would cause a blood pressure increase.
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What is the name given to substances that can cause birth defects or even death if exposure to them occurs during the embryonic period?
A. Teratogens B. Fungicides C. Antibiotics D. Pesticides E. Mutagens
Match the type of reflex to its description.
1. integrated in the brain 2. several neurons involved in a pathway; can be complex 3. involves skeletal muscles 4. reflexes that one is born with; genetically determined 5. integrated in the spinal cord, often modulated by the brain 6. an example would be slowing or speeding the heart and other internal organs that are not consciously controlled 7. our experiences tell us how to behave; bracing yourself in anticipation would be an example
Which of the following statements is true?
a. The only physiological function for which surface-area-to-volume ratio is relevant is digestion. b. The only physiological function for which surface-area-to-volume ratio is irrelevant is reproduction. c. For any physiological function, a high surface-area-to-volume ratio is advantageous. d. Surface area increases as the square of the linear dimension while volume increases as the cube. e. All statements are true.
In capillary exchange, which of the following statements is true?
A. Most fluid that leaves the arterial end of a capillary reenters the venous end of a capillary. B. Constriction of the precapillary sphincter will increase blood pressure in the capillary. C. Most fluid that leaves the arterial end of a capillary enters the lymphatic system. D. Interstitial protein concentration is normally higher than plasma protein concentration. E. Interstitial fluid normally has a higher osmotic pressure than plasma.