Which of the following brain areas serves as the major control center of the autonomic nervous system and endocrine system?
A. hypothalamus
B. midbrain
C. pons
D. thalamus
E. brainstem
A
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Each 100 ml of blood leaving the alveolar capillaries carries away roughly ________ ml of oxygen
A) 10 B) 20 C) 30 D) 50 E) 75
Which of the following statements regarding the fatty acid tails of phospholipids is FALSE?
a. Phospholipids with unsaturated tails make the bilayer more fluid because the tails contain fewer hydrogens and thus form fewer hydrogen bonds with each other. b. Saturated phospholipids' tails pack more tightly against each other than do unsaturated tails. c. Most membrane phospholipids have one fully saturated tail. d. Phospholipid tails in a membrane can interact with each other via van der Waals interactions. e. Fatty acid tails vary in length.
Identify the three ways that carbon dioxide is transported in the bloodstream
A) Bound to hemoglobin, bound to other transport proteins, or bound to the surface of the RBCs. B) Dissolved in plasma, bound to the surface of the RBCs, or as bicarbonate ions in the plasma. C) Dissolved in plasma, as hydrogen ions in the plasma, or bound to hemoglobin. D) Bound to hemoglobin, bound to the surface of the RBCs, or as hydrogen ions in the plasma. E) Dissolved in plasma, bound to hemoglobin, or as bicarbonate ions in the plasma.
A prominent ridge, as seen on the pelvis, is a
A) crest. B) fossa. C) line. D) spine. E) ramus.