Hematocrit is the percentage of ____ in a blood sample.
Fill in the blank(s) with the appropriate word(s).
Answer: RBCs
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Which of the following is not an autoimmune disease?
A. Anaphylaxis B. Systemic lupus erythematosus C. Rheumatic fever D. Type I diabetes mellitus E. Rheumatoid arthritis
Identify the structure at the tip of the arrow in this figure
A) pyloric sphincter B) lower esophageal sphincter C) ileocecal sphincter D) anal sphincter
A 13-year-old girl is brought to the ER after falling from a horse onto her left side. Her pulse is 120/min, blood pressure is 90/60 mm Hg, and respirations are 30/min. Physical examination reveals cold and clammy skin, bruising, and fractured 9th and 10th ribs on her left side at the posterior axillary line. Which of the following organs is most likely damaged in this patient?
(A) Stomach (B) Kidney (C) Lung (D) Liver (E) Spleen
What occurs during hyperpolarization of a neuron membrane?
A. Sodium ions are leaving the cell B. Sodium ions are entering the cells C. Potassium ions are leaving the cell D. Potassium ions are entering the cell E. Both sodium and potassium ions are leaving the cell