Nokea
The presence of more oxytocin oxygen to, and remove waste from, receptors in the uterus leads to weak, irregular contractions known as the embryonic blood by the ________ ________. week of pregnancy.
- A. dystocia
- B. first
- C. Braxton Hicks
- D. second
Correct Answer: C
Rationale: The correct answer is C: Braxton Hicks contractions. These contractions are weak, irregular contractions that occur in the uterus during pregnancy. They are often referred to as "practice contractions" as the body prepares for labor. The presence of more oxygen and removal of waste from the uterus can trigger Braxton Hicks contractions.
Choice A, dystocia, refers to difficult or prolonged labor, not weak contractions. Choice B, first week, is not relevant to the question as Braxton Hicks contractions typically occur later in pregnancy. Choice D, second week, is also not correct as Braxton Hicks contractions occur later in pregnancy, typically in the third trimester.
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A client is learning how to maintain optimum bladder function. Which of the following strategies identifies the method of pressing on the bladder while seated on the toilet?
- A. Valsalva maneuver
- B. Kegel maneuver
- C. Pelvic floor maneuver
- D. Crede's maneuver
Correct Answer: D
Rationale: Crede's maneuver involves applying manual pressure to the bladder to aid in voiding.
The cortical area of the ovary contains:
- A. primordial follicles;
- B. mature follicles;
- C. secondary follicles;
- D. blood vessels;
Correct Answer: A
Rationale: Step 1: The cortical area of the ovary is the outer layer where follicles develop.
Step 2: Primordial follicles are the earliest stage of follicle development, found in the cortex.
Step 3: Mature follicles are developed follicles located deeper in the ovary, not in the cortex.
Step 4: Secondary follicles are also more developed than primordial follicles, located deeper.
Step 5: Blood vessels are important for supplying nutrients but are not specific to the cortical area.
Therefore, the correct answer is A as primordial follicles are located in the cortical area, while other choices are found in different regions of the ovary.
After birth, the pressure in the pulmonary artery decreases greatly. What is the cause of this?
- A. Systemic arterial pressure increases
- B. Ductus arteriosus closes
- C. Left ventricular pressure increases
- D. Pulmonary vascular resistance decreases
Correct Answer: D
Rationale: The correct answer is D: Pulmonary vascular resistance decreases. After birth, the lungs expand and start functioning, leading to increased oxygen levels, which causes the pulmonary vascular resistance to decrease. This allows blood flow to the lungs and decreases pressure in the pulmonary artery.
A: Systemic arterial pressure increasing does not directly affect the pressure in the pulmonary artery.
B: Ductus arteriosus closing is part of the normal postnatal changes but does not directly cause the decrease in pulmonary artery pressure.
C: Left ventricular pressure increasing is a consequence of the closure of the ductus arteriosus but does not explain the decrease in pulmonary artery pressure.
Choose the statement that is NOT TRUE:
- A. Fragmentation is followed by regeneration.
- B. The offspring from asexual reproduction is genetically identical.
- C. The embryo of ovoviviparous gets nourishment from the egg yolk.
- D. Crossing-over occurs between sister chromatids of homologous chromosomes.
Correct Answer: D
Rationale: The correct answer is D because crossing-over occurs between non-sister chromatids of homologous chromosomes during meiosis, not between sister chromatids. This genetic exchange results in genetic variation. Fragmentation is followed by regeneration in some organisms, asexual reproduction produces genetically identical offspring, and ovoviviparous embryos do get nourishment from the egg yolk.
The main function of progesterone in the menstrual cycle is to CHAPTER 4: REPRODUCTION COMPILED BY: ZAIDI YAACOB UNAUTORIED DUPLICATION IS PROBIHITED, FOR THE CIRCULATION OF BIO095 STUDENTS ONLY
- A. stimulate development of corpus luteum .
- B. stimulate development of the follicl
- C. maintain endometrium lining.
- D. trigger ovulation.
Correct Answer: C
Rationale: The correct answer is C because progesterone's main function in the menstrual cycle is to maintain the endometrium lining. Progesterone is produced by the corpus luteum after ovulation, and it helps prepare the endometrium for implantation of a fertilized egg. This hormone ensures that the endometrium is thick and ready to support a potential pregnancy.
Choice A is incorrect because progesterone is not responsible for stimulating the development of the corpus luteum; instead, it is produced by the corpus luteum itself.
Choice B is incorrect because progesterone does not stimulate the development of the follicle. The follicle is primarily influenced by estrogen during the follicular phase of the menstrual cycle.
Choice D is incorrect because ovulation is triggered by a surge in luteinizing hormone (LH), not progesterone. LH surge causes the release of the egg from the follicle.