The digestive tube leading from the mouth to the stomach is the ________.
Fill in the blank(s) with the appropriate word(s).
esophagus
The digestive tube leading from the mouth to the stomach is the esophagus.
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When you are jogging, your muscles are using more oxygen and releasing more carbon dioxide into the blood than when you are at home on the couch. Which of the following would occur during your jog?
A) Blood pH would become more basic. B) The concentration of bicarbonate ions (HCO3-) in the blood would decrease. C) The medullary respiratory center would detect rising carbon dioxide levels. D) The volume of the dead air space would decrease.
MAOA is an enzyme that breaks down ______________. Fill in the blank(s) with the appropriate word(s)
Select the example of an exocrine gland.
A. pituitary gland B. adrenal gland C. salivary gland D. thyroid gland
Palytoxin is incredibly toxic, perhaps the second most dangerous nonpeptide toxin. It targets the sodium-potassium pump, locking it open and forming a channel through which the ions can passively flow. Palytoxin is produced by zoanthid cnidarians (soft coral), and there have been incidents of poisoning from zoanthids within marine aquaria tanks in people's homes. It is also thought to be the source of the legend of the Limu make o hana ("Seaweed of Death from Hana").A Hawaiian legend tells of a village that angered a shark god. In revenge, a "seaweed" began to grow in the tidepools that killed anyone who touched it. In fact, this "limu - make - o - Hana" - a zoanthid cnidarian - contains a palytoxin that locks the sodium-potassium pump open, allowing free flow of ions. If a villager
suffers palytoxin poisoning, which way will the ions in his neurons flow? A. All ions will flow out B. Chloride and sodium out, potassium in C. Sodium in, potassium out D. Potassium in, sodium out