The midbrain contains the headquarters of the ________, a specialized component of the reticular formation that controls alertness and attention
A) cardiovascular control center
B) reticular activating system
C) respiratory rhythmicity center
D) tectum
E) tegmentum
Answer: B
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Moderate exercise improves the health of joints by increasing the flow of synovial fluid in and out of the articular cartilage.
Answer the following statement true (T) or false (F)
Describe the respiratory pump
A) The respiratory pump is a mechanism by which a reduction of pressure in the thoracic cavity during inhalation assists venous return to the heart. B) The respiratory pump is a mechanism by which contraction of the lungs propels blood through the thoracic cavity to the heart. C) The respiratory pump is a mechanism by which bronchoconstriction propels blood through the thoracic cavity to the heart. D) The respiratory pump is a mechanism by which an increase in pressure in the thoracic cavity during exhalation pushes blood towards the heart. E) The respiratory pump is a mechanism by which alternating cycles of bronchiolar constriction and bronchiolar dilation propel blood towards the heart.
Which type of disease results from an infection caused by a microorganism?
A. Developmental disorder B. Infectious disease C. Congenital disorder D. Genetic disorder
The element that is necessary for the proper function of the enzyme carbonic anhydrase is
A) iron. B) cobalt. C) zinc. D) selenium. E) iodine.