What occurs when the pressure in the ventricles drops below the pressure of the atria?
A. SL valves open
B. AV valves open
C. AV valves close
D. SL valves close
Answer: B
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The organ known as the _____________ ___________ picks up vibrations in the water
Fill in the blank(s) with correct word
During exercise, there is not an increased blood flow to which of the following tissues?
a. skeletal muscles. b. heart. c. skin. d. brain. e. blood flow is increased to all of these tissues during exercise.
Filtration slits:
a. provide a pathway through which fluid from the glomerulus can enter the Bowman's capsule.. b. allow proteins to pass into the filtrate c. are not found in all nephrons d. do not allow nutrients to pass into the filtrate e. are important in the ability of the kidneys to produce urine of varying concentration.
Explain the relationship between atoms and elements
What will be an ideal response?