In the fetus, the foramen ovale causes the majority of blood to bypass which of these structures?
a. coronary sinus c. right ventricle
b. left ventricle d. superior vena cava
C
The blood enters the right atrium and moves through the foramen ovale to the left atrium and then to the left ventricle. A small portion of this blood passes into the right ventricle.
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The nurse cautions the patient who is being instructed on self-medication with insulin to be aware that there are 25-, 30-, 50-, and 100-unit syringes. How is the 100-unit syringe marked?
a. 1-unit increments b. 2-unitt increments c. 4-unit increments d. 5-unit increments
In the earliest primitive societies, people believed that mental illness was the result of
1. an imbalance of humors. 2. demons and evil forces. 3. microbes and bacteria. 4. witches and magicians.
New experimental treatments of depression include:
a. ablation of brain tissue that is emitting abnormal electrical signals b. isolation and sensory deprivation during sleep c. stimulating the brain using powerful localized magnetic fields d. sustained whole-brain overstimulation from simultaneous multimedia sources
An amniocentesis is scheduled for a pregnant client who is in the third trimester of pregnancy. The nurse tells the client that the most common indication for amniocentesis during the third trimester is which?
A. Determination of fetal lung maturity B. Checking the amniotic fluid for intrauterine infection C. Checking the fetal cells for chromosomal abnormalities D. Determination of whether alpha-fetoprotein (AFP) is present in the amniotic fluid