Kaplan Nursing Entrance Exam-Science
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How does blood flow through the heart?
Ans: Blood enters the heart through the inferior and superior vena cava
into the right atrium. The blood flows through the tricuspid valve into the
right ventricle. The oxygenated blood flows through four pulmonary veins
from the lungs into the left atrium, then to the left ventricle.
What is the specific site of gas exchange in the respiratory system?
Ans: Alveoli
What is hemoglobin?
Ans: It is a protein in red blood cells that carries oxygen throughout the
body. *low hemoglobin count may indicate you have anemia.
What is hypertension ?
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Ans: Abnormally high blood pressure
* higher than 140 over 90 mmHg (millimeters of mercury).
What would a normal blood pressure reading show ?
Ans: Normal blood pressure is below 120 systolic and below 80 diastolic
What does the parasympathetic nervous system do ?
Ans: slows the heart rate, increases intestinal and gland activity, and
relaxes sphincter muscles in the gastrointestinal tract.(rest and digest)
What does the sympathetic nervous system do?
Ans: Accelerates the heart rate, constrict blood vessels, and raises blood
pressure
What does the autonomic nervous system do ?
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Ans: Regulates the functions of our internal organs (the viscera) such as
the heart, stomach and intestines.
Where is most of our food digested?
Ans: The small intestine
What is a Proprioceptor?
Ans: Sensory receptors located in the inner ear, muscles, tendons, and
joints that use internal stimuli to detect changes in position or movement
of the body or its limbs are called proprioceptors.
What controls heart rate?
Ans: The medulla of your brain is your control center for your heart rate,
your parasympathetic and sympathetic nervous system will cause
variations in heart rate.
Brain function of the: cerebral cortex