The pyramidal system can be defined as
A) includes the reticulospinal tract.
B) the control system for involuntary muscles.
C) a voluntary motor pathway.
D) a series of ascending tracts.
E) None of the answers are correct.
C) a voluntary motor pathway.
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A person is experiencing severe heartburn. To compensate for their pain, they take 9 sodium bicarbonate-based antacids, which is more than triple the recommended dosage. Which of the following is NOT a way the body can compensate to react to the pH-related condition this overdose will produce?
A. Dihydrogen phosphate in the extracellular environments will dissociate to release H+ ions. B. The respiratory centers will cause an increased breathing rate and depth to release CO2. C. The kidneys reabsorb hydrogen ions and decrease their secretion into the urine. D. In the blood, amino acid chains of structures like hemoglobin will release H+ ions from -COOH and -NH3+ groups.
The following are structural components of the conducting system of the heart. 1. Purkinje fibers 2. AV bundle 3. AV node 4. SA node 5. bundle branches The sequence in which excitation would move through this system is which of the following?
A) 1, 4, 3, 2, 5 B) 3, 2, 4, 5, 1 C) 3, 5, 4, 2, 1 D) 4, 3, 2, 5, 1 E) 4, 2, 3, 5, 1
Which one of the following is not part of the neurohypophysis?
a. hypothalamohypophyseal tract b. infundibulum c. pars tuberalis d. median eminence e. posterior lobe, or pars nervosa
When immobilizing a sitting patient with a vest-type extrication device or short backboard, you should manually stabilize his or her head and then:
A) apply an appropriately sized cervical collar. B) perform a rapid assessment to detect life threats. C) assess distal pulse and sensory and motor functions. D) carefully place the vest device behind the patient.