Hypocalcemia leads to hyperactivity of the cardiac muscle.
a. true
b. false
b. false
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Patients with injuries to their thoracic spinal cord segment who are paralyzed in both legs are described as ________.
A. paraplegic B. quadriplegic C. suffering from Guillain-Barré syndrome D. suffering from meningitis
Which statement about the medullary vertical osmotic gradient is incorrect?
a. Juxtamedullary nephrons create the gradient through countercurrent multiplication. b. Vasa recta supply blood to the medulla while conserving the gradient. c. Collecting tubules of juxtamedullary nephrons, but not cortical nephrons, descend through the gradient before emptying into the renal pelvis. d. The gradient permits excretion of urine of differing concentrations by means of vasopressin-controlled, variable H2O reabsorption from the final tubular segments. e. None of the above statements are incorrect.
With respect to the lymphatic system, what do the letters in the acronym MALT stand for?
A. Multiple-antibody lymphocyte test B. Multiple-antigen lymphocyte target C. Membrane-adhering lymphatic T-cells D. Mucosa-associated lymphatic tissue
Of the following muscles of the head, which one wraps around the orbits?
A. nasalis B. temporalis C. orbicularis oculi D. masseter E. orbicularis oris