When might amniocentesis be appropriate?
What will be an ideal response
Amniocentesis might be performed any time a history of any genetic disability is discovered in a family, especially if there are several occurrences in a family. This will give the parents an early warning of any possible problem with the fetus. Other "high-risk pregnancies" ( such as in women over 35 ) may also suggest use of amniocentesis.
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Sabrina's resting heart rate is 80 beats per minute, and her resting stroke volume is 50 mL per beat. What is her cardiac output? When she exercises, her heart rate increases to 100 beats per minute and her stroke volume increases to 55 mL per beat. What happens to her cardiac output? What is the advantage of the lower relative increase in stroke volume?
What will be an ideal response?
Most of the anterior forearm muscles are responsible for
A) extension of the wrist and fingers. B) extension of the forearm. C) flexion of the wrist and fingers. D) flexion of the forearm. E) flexion of the arm.
What class of connective tissue does bone and cartilage represent?
Small signals at a synapse that can add together are called
A. graded potentials. B. kinetic potentials. C. action potentials. D. receptor potentials. E. resting potentials.