Immediately prior to atrial contraction, blood continues to enter the atria from the venae cavae and pulmonary veins
Indicate whether this statement is true or false.
TRUE
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The white muscles of fish are organized into units of parallel layers derived from internal segments of the embryo called __________
Fill in the blank with the correct word.
When an impulse arrives at the knob of the motor neuron, calcium
A. enters through active transport pumps and triggers the release of transmitter. B. enters through voltage-gated channels and triggers the release of transmitter. C. is released from synaptic vesicles. D. exits through voltage-gated channels and triggers transmitter release. E. exits through active transport pumps and brings transmitter with it.
A person with Addison disease ___________.
A) is unable to replenish blood glucose levels under stressful conditions B) develops dramatically more male features C) develops a rounded face and edema D) has overgrowth of hands and face E) all of the above
The countercurrent multiplier recaptures ________ and is based on fluid flowing in the ________ direction in two adjacent tubules
A) potassium; same B) sodium; opposite C) sodium; same D) calcium; opposite E) calcium; same