Answer:
PRENATAL MATERNAL STRESS
Explanation:
Prenatal maternal stress is define as the chronic and extreme stress that a mother experiences during her pregnancy. In which the stress can be acute or severe leading linked to sudden changes in
the women's daily routine .
Some of the side effects of prenatal maternal stress are preterm birth, infant mortality and low birthweight. The Stress may have an implications on the maternal and the infant health and the stress hormones flooding her body may damage the developing fetus.
Prenatal maternal stress can be caused by stressful events or hardships which in turn changes the mother's hormonal and immune system which may harm the fetus's immune function and brain development as well.
The cardiac cycle consists of two phases; a period where the heart muscle is relaxed, called <u>diastole</u>, and a period of contraction, called <u>systole</u>.
These are then divided into four stages. These are;
1.<u>Ventricular Filling Period (VPF)</u>
2. <u>Isovolumetric Contraction Period (ICP)</u>
3. <u>Ventricular Ejection Period (VEP)</u>
4.<u> Isovolumetric Relaxation Period (IRP)</u>
At rest, cardiac diastole lasts for approximately 0.5 seconds, and cardiac systole lasts approximately 0.3 seconds to complete. However, during exercise, when the heart rate is increased the time period of <u>diastole</u> , especially, is reduced.
<span>BMR is measured under very restrictive circumstances when a person is awake. An accurate BMR measurement requires that the person's sympathetic nervous system not be stimulated, a condition which requires complete rest. A more common measurement, which uses less strict criteria, is resting metabolic rate (RMR).</span>
There has been a sudden increase in the crime rate in Hannah's neighborhood, and she feels unsafe.
