Your patient has been complaining about headaches, lightheadedness, upset stomach, weight loss, and a rapid heartbeat. You run some tests and notice that the patient's stomach lining has thinned; you also suspect that he has a vitamin B12 deficiency. What could cause a lack of vitamin B12 absorption in the stomach?
A. Underproduction of mucus
B. Insufficient intrinsic factor
C. Hyposecretion of pepsinogen
D. Pernicious anemia
Answer: B
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Answer the following statements true (T) or false (F)
1. The maxilla is the bone of the lower jaw. 2. The zygomatic bone is the cheekbone. 3. Going from superior to inferior, the sequence of the vertebrae is cervical, thoracic, lumbar, coccyx, and sacrum. 4. The curves of the spine are important in supporting the weight of the rest of the body. 5. The ribs that individually attach to a costal cartilage and then to the sternum are called true ribs.
The inflation (Hering-Breuer) reflex is a potentially dangerous response that may cause overinflation of the lung
Indicate whether the statement is true or false
The heart valves are innervated by the autonomic nervous system
Indicate whether the statement is true or false
The most abundant leukocytes in the blood are the ________.
A. eosinophils B. neutrophils C. basophils D. monocytes