When the level of blood flow is not ideally matched with the amount of airflow in a localized area of lung tissue
a. autoregulatory mechanisms are invoked.
b. the autonomic nervous system couples the events more ideally.
c. if airflow is low and blood flow to high, arteriolar vasoconstriction occurs.
d. both (a) and (b) above.
e. both (a) and (c) above.
E
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The organelles that are the “power plants” of the cell are the:
a. ribosomes b. mitochondria c. Golgi apparatus d. centrioles
The area monitored by a single sensory neuron is called the __________ field.
Fill in the blank(s) with the appropriate word(s).
The ________ is a layer of follicle cells that surrounds the oocyte on day 14 of a 28-day cycle.
A) antrum B) zona pellucida C) corona radiata D) corpus albicans E) isthmus
A 50-year-old woman was concerned about the appearance of "crow's-feet" by her eyes. She was told by her physician that these wrinkles were caused by years of squinting and blinking using which muscle?
a. frontal belly of occipitofrontalis b. orbicularis oculi c. risorius d. orbicularis oris