Which germ layer is the system responsible for moving substances around the body derived from?
A. Ectoderm
B. Endoderm
C. Mesoderm
Answer: C
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Which of the choices below is NOT an essential role of salts in the body?
A) anabolism of lipids B) secretory activity C) neuromuscular activity D) membrane permeability
Which artery is a branch of the celiac trunk?
A. Right gastric artery B. Right gastro-omental artery C. Left gastro-omental artery D. Left gastric artery E. Superior mesenteric artery
What is the major factor controlling how levers work?
A) the structural characteristics of the muscles of the person using the lever B) the weight of the load C) the direction the load is being moved D) the difference in the positioning of the effort, load, and fulcrum
If a substance has a plasma concentration of 150 mg/ml and a urine concentration of 1.7 mg/ml, and the urine flow rate is 1.3 ml/min, what is the clearance of this substance?
a. 15 ml/min. b. 196 ml/min. c. 0.4 ml/min. d. can not be determined with these data. e. none of these answers.