Nokea
Which hormone is responsible for preparing the endometrium of the uterus for pregnancy?
- A. FSH
- B. Estrogen
- C. LH
- D. Progesterone
Correct Answer: B
Rationale: Estrogen is the hormone responsible for initiating the preparation of the endometrium of the uterus for pregnancy. Estrogen helps thicken the endometrial lining, which is crucial for the implantation of a fertilized egg. It plays a vital role in the menstrual cycle and is primarily produced by the ovaries.
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Which organ is part of both the male reproductive system and the urinary system?
- A. Ureter.
- B. Testis.
- C. Epididymis.
- D. Urethra.
Correct Answer: D
Rationale:
Which muscle of the quadriceps group is located on the lateral surface of the lower extremity?
- A. Vastus lateralis
- B. Gastrocnemius
- C. Anterior tibialis
- D. Rectus femoris
Correct Answer: A
Rationale: The correct answer is A: Vastus lateralis. The vastus lateralis is a muscle of the quadriceps group that is situated on the lateral side of the lower extremity. It is responsible for extending the knee joint. Gastrocnemius (choice B) is a muscle located in the calf, Anterior tibialis (choice C) is a muscle in the anterior compartment of the leg, and Rectus femoris (choice D) is a muscle of the quadriceps group but is not located on the lateral surface of the lower extremity. Therefore, they do not match the description provided in the question and are incorrect choices.
What contributes to phagocytosis in white blood cells?
- A. Golgi apparatus.
- B. Endoplasmic reticulum.
- C. Vacuoles.
- D. Lysosomes.
Correct Answer: D
Rationale:
To where are all the nutrients that enter the hepatic portal vein routed for decontamination?
- A. Kidney
- B. Pancreas
- C. Spleen
- D. Liver
Correct Answer: D
Rationale: When nutrients are absorbed from the digestive tract, they enter the hepatic portal vein and are transported directly to the liver. The liver acts as a filter, processing and detoxifying these nutrients before they are further distributed to the rest of the body. Therefore, the correct answer is the liver, which plays a crucial role in detoxifying substances that enter the body through the digestive system.
Which cavity of the heart has the thickest wall?
- A. Right atrium
- B. Left atrium
- C. Right ventricle
- D. Left ventricle
Correct Answer: D
Rationale: The correct answer is the left ventricle. The left ventricle has the thickest wall among the heart cavities as it needs to pump oxygenated blood to the entire body, requiring more force and muscle strength. Its thick wall helps generate enough pressure to propel blood through the systemic circulation. The other choices, including the right atrium, left atrium, and right ventricle, do not have as thick walls as the left ventricle because their functions involve receiving and transferring blood with lower pressure requirements.