The structures that help prevent toxins in the blood from reaching the brain make up the __________ __________ barrier.
Fill in the blank(s) with the appropriate word(s).
blood brain
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The vitreous humor:
a. is found in the anterior cavity b. is found in the posterior chamber c. is a watery fluid in front of the lens d. both A and C above
You may have noticed that after a large meal you have had some difficulty breathing. Which explanation is most accurate with regard to this situation?
A. The large quantity of food retards pulmonary blood flow. B. A full stomach impedes contraction of the diaphragm, limiting inhalation. C. The food presses on the bronchi, making air flow difficult. D. Oxygen to the lungs is restricted due to fullness in the stomach.
Of the three phases of swallowing, only the esophageal phase is involuntary.
Answer the following statement true (T) or false (F)
cAMP activates ________, which catalyzes the ________ of other enzymes in the cytoplasm.
A. protein kinase; phosphorylation B. calmodulin; hydrolysis C. tyrosine kinase; hydrolysis D. calcium; phosphorylation