This figure shows respiratory control centers in the brainstem. What does number 2 indicate?
A. Central chemoreceptors
B. Dorsal respiratory group
C. Pontine respiratory group
D. Ventral respiratory group
Answer: A
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Cardiac output is a function of heart rate and
A) Blood pressure. B) Vasoconstriction. C) Heart size. D) Stroke volume.
Matching
A) Maxillae B) Temporal bones C) Sphenoid D) Lacrimal bones 13) These very small bones are at the medial wall of each orbit. 14) Failure of these anterior bones to fuse causes a condition known as cleft palate. 15) This bone houses the apparatus of the internal and middle ear. 16) This bone is wing-shaped and extends behind the eyes and forms part of the floor of the 17) The bones that contain teeth. 18) This bone has a passageway into the nasal cavity. 19) The sella turcica is a portion of this bone.
Which of the following statements accurately defines dorsal body cavity?
A) On the distal side of the body: contains the heart and lungs B) On the anterior side of the body: contains the nerves and spine C) On the inferior side of the body: contains the intestines D) On the posterior side of the body: contains the cranial and spinal cavities
A substance that provokes an immune response is called a(n)
A) thymosin. B) complement. C) chemotoxin. D) irritant. E) antigen.