Edema and varicose veins in the lower extremities sometimes develop in the third trimester of a pregnancy due to
A. decreased cardiac output.
B. elevated blood pressure.
C. compression of abdominal blood vessels.
D. elevated hematocrit.
C
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The myelination of central and peripheral axons occurs rapidly through the first few years of life. How can this developmental process explain the improved motor abilities of infants and toddlers?
What will be an ideal response?
Match each gastric secretion with the correct function
1. Protects lining of the stomach Hydrochloric acid 2. Destroys ingested bacteria and activates pepsin Gastrin 3. Active form aids in breaking proteins into smaller peptide chains Intrinsic factor 4. Stimulates gastric secretions Pepsinogen 5. Aids in the absorption of Vitamin B12 Mucous
If blood has low viscosity, which result would be likely under normal conditions?
A) Blood flows at higher pressures. B) Blood flows against high resistance. C) Blood flow cannot occur. D) Blood flows at lower pressures. E) Blood contains increased numbers of plasma proteins and suspended blood cells.
The normal alveolar volume in a healthy adult is:
A) 250 mL. B) 300 mL. C) 350 mL. D) 400 mL.