All of the following factors would be expected to increase a person's vital capacity except
A. getting regular exercise.
B. being taller.
C. being in good general health.
D. getting older.
E. being male instead of female.
Answer: D
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Which statement is true regarding calcium in bone matrix?
A) Calcium is found in crystals called hydroxyapatite. B) Calcium is secreted by osteoblasts into the matrix. C) Once deposited, calcium cannot be removed from bone. D) Calcium provides flexibility to the bone matrix. E) Calcium is the organic part of the matrix.
The inferior tip of the spinal cord is the ___________ part
A. thoracic B. lumbar C. coccygeal D. cervical E. sacral
Which of the following is a feedforward phenomenon?
a. Increasing the amount of insulin secreted before nutrients in food enter the blood. b. Shivering in response to having cold air around the body. c. Sweating after being in a sauna for 10 minutes. d. Eating a doughnut because you are hungry. e. Jerking your hand away from a hot stove after you touch it.
Define mediastinum
A) The mediastinum is the region that contains each lung. B) The mediastinum is the region between the two pleural cavities that contains the heart, along with the great vessels, thymus, esophagus, and trachea. C) The mediastinum is the region anterior to the sternum that is pressed during cardiac pulmonary resuscitation. D) The mediastinum is the region from the diaphragm to the superior border or the rib cage and from each lateral side of the rib cage. E) The mediastinum is the serious membrane that surrounds the heart.