Obstetrics Quiz Test

The uterine souffle is a soft blowing sound that occurs at the same rate as the maternal pulse. It is caused by an increased maternal blood-flow to the uterus. This is true because during pregnancy, there is an increase in blood flow to the uterus to support the growing fetus. This increased blood flow can be heard as a soft blowing sound, which is known as the uterine souffle.

Sperm and ovum are viable for a period of 24-36 hours. This means that after fertilization, the sperm can survive and fertilize the ovum within this time frame. It is important to note that the viability of sperm and ovum can vary slightly for each individual, but generally, this is the timeframe in which fertilization can occur.

The explanation for the given correct answer is that a funic souffle is indeed a soft blowing sound that occurs at the same time as the fetal heart-rate. This sound is caused by the fetal blood-flow through the umbilical cord. Therefore, the statement is true.

The normal fetal bpm (beats per minute) is typically between 120 and 150. This range indicates a healthy heart rate for a developing fetus.

Chadwick's sign refers to a bluish-purple discoloration of the cervix and vagina that occurs during pregnancy. This discoloration is due to increased blood flow and congestion in the area, caused by hormonal changes. It is one of the early signs of pregnancy and can be detected during a pelvic examination. The increased blood flow is important for supplying oxygen and nutrients to the developing fetus.

Hegar's sign refers to the softening of the lower uterine segment during pregnancy. It is a physical examination finding that can be detected by a healthcare provider during a pelvic exam. This softening occurs due to hormonal changes and increased blood flow to the uterus, allowing it to stretch and accommodate the growing fetus. Hegar's sign is considered a positive sign of pregnancy and is often used as an indicator of early pregnancy.

During the blastocyst stage, the outer layer is called the trophoblast. The trophoblast later becomes the placenta and the fetal membrane.

Goodell's sign refers to the softening of the cervix, which is a normal physiological change that occurs during pregnancy. The cervix becomes softer and more elastic due to increased blood flow and hormonal changes. This sign can be detected during a pelvic examination, where the healthcare provider feels a softening and increased flexibility of the cervix compared to its usual firmness. Goodell's sign is one of the early signs of pregnancy and can be used as an indicator of pregnancy during physical examination.

A fetus is considered viable when it has reached a stage of development where it has the potential to survive outside of the womb. This typically occurs around 24 weeks of gestation. However, the correct answer in this case is 20 weeks, which suggests that the question may be referring to a specific legal or medical definition of viability. It is important to note that the viability of a fetus can vary depending on various factors such as the health of the mother and the availability of medical interventions.

Amniotic fluid is a clear, slightly yellowish liquid that surrounds and protects the fetus during pregnancy. It is primarily composed of water, electrolytes, proteins, and other substances. The correct answer is 98%, indicating that amniotic fluid is made up of approximately 98% water. This high water content is essential for maintaining a stable environment for the developing fetus, cushioning it from external shocks, and allowing for proper growth and movement.

The placenta is formed during the third week of pregnancy. It starts to develop from the outer layer of the embryo and the lining of the uterus. By the twelfth week, the placenta is fully functional. It acts as a lifeline between the mother and the developing fetus, providing oxygen and nutrients while removing waste products. The placenta also plays a crucial role in hormone production and immune protection for the fetus.

During blastocyst, the inner layer is called the embryonic disk. The embryonic disk later becomes the embryo.

The correct answer is 9th day. During embryonic development, the yolk sac is responsible for producing red blood cells (RBCs) until the liver takes over this function. Around the 9th day of development, the yolk sac starts producing RBCs, which then circulate in the embryo's bloodstream. This process continues until the liver becomes fully functional and takes over the production of RBCs.

The liver begins to function in the 6th week of fetal development. This is when the liver starts producing blood cells and begins to play a vital role in filtering toxins from the blood and producing bile. Prior to this week, the liver is still developing and not fully functional.

Ultrasounds can detect pregnancy at around 6 weeks. This is the earliest stage at which a pregnancy can be confirmed through ultrasound imaging. The ultrasound technology allows medical professionals to visualize the developing fetus and identify important markers of pregnancy, such as the presence of a gestational sac or a fetal heartbeat. Therefore, at around 6 weeks, ultrasounds can provide valuable information about the progress and health of the pregnancy.

During pregnancy, there are certain warning signs that can indicate potential complications. Dysuria refers to pain or discomfort during urination, which can be a sign of a urinary tract infection. Blurred vision or double vision can be a symptom of preeclampsia, a condition characterized by high blood pressure during pregnancy. Continuous vomiting, especially when accompanied by other symptoms like dehydration or weight loss, can be a sign of hyperemesis gravidarum, a severe form of morning sickness. These warning signs should be taken seriously and reported to a healthcare provider for further evaluation and management.

The morula is a stage in embryonic development where a solid ball of cells is formed. After fertilization, the morula travels down the fallopian tube and reaches the uterus around day 5. Once in the uterus, it continues to develop and undergoes further changes. On day 4, the morula may still be in the fallopian tube or in the process of reaching the uterus, but it is not yet fully in the uterus. Therefore, the correct answers are 5 and 4.

The term umbilical cord can vary in length, but typically it measures around 23 inches, 24 inches, or 22 inches.

During pregnancy, fetal movements can usually be felt by the physician starting from the 15th week and continuing into the 16th week. This is because by this time, the fetus has developed enough to have stronger movements that can be detected by the physician.