Most of the inspired oxygen is carried to the tissues via which component of the body?
a. Plasma
b. Lymphatic system
c. Red blood cells
d. White blood cells
C
The red blood cells carry 97% of the oxygen to the cells, attached to hemoglobin.
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The nurse is caring for a client with external otitis. Which assessment finding indicates to the nurse that the client's infection has worsened?
a. The client now reports tinnitus and vertigo at night. b. The client now has a positive Rinne test, with AC > BC. c. The tympanic membrane is pearly gray with white patches. d. The auricular lymph nodes have increased in size over the last 24 hours.
A postpartum mother is concerned that her newborn has not had a stool since birth. The newborn is 18 hours old. The nurse's best response is:
1. "I will call your pediatrician immediately." 2. "Passage of the first stool within 48 hours is normal." 3. "Your newborn might not have a stool until the third day." 4. "Your newborn must be dehydrated."
The nurse is explaining to a client the imbalance of neurotransmitters in Parkinson disease
How will the nurse describe the relationship between acetylcholine and dopamine in the area of the brain that affects balance, posture, and involuntary muscle movement? 1. Dopamine stimulates while acetylcholine inhibits this region. 2. Both dopamine and acetylcholine inhibit this region of the brain. 3. Both dopamine and acetylcholine stimulate this region of the brain. 4. Dopamine inhibits and acetylcholine stimulates this region.
The most common cause of disability in the elderly is due to
A. Diabetes B. Arthritis C. Heart disease D. Chronic obstructive pulmonary disease