What are possible characteristics of a patient who is at a higher risk for developing uterine cancer?

Correct Answer: C

Rationale: Step-by-step rationale: 1. Uterine cancer risk increases with age, so a 67-year-old patient is at higher risk. 2. Estrogen-only HRT without progesterone increases uterine cancer risk. 3. Other choices are less likely: A has lower age and childbirth may reduce risk, B's age and menstrual cycle are not typical risk factors, and D's oral contraceptives may decrease uterine cancer risk.

Correct Answer: C

Rationale: The correct answer is C: Reticular, elastic, and collagen fibers. Reticular fibers provide structural support, elastic fibers allow flexibility, and collagen fibers offer strength to connective tissues. Purkinje fibers are specialized cardiac muscle fibers, not connective tissue fibers. Choice A is incorrect because it includes Purkinje fibers, which are not part of connective tissue. Choice B is incorrect as it includes Purkinje fibers instead of reticular fibers. Choice D is incorrect because it lacks elastic fibers, which are essential for tissue flexibility. Therefore, choice C is the correct answer as it includes all three types of essential connective tissue fibers.

Correct Answer: B

Rationale: The correct answer is B because the morula is a stage between the zygote (fertilized egg) and blastocyst (hollow ball of cells). After fertilization, the zygote undergoes multiple rounds of cell division to form a compact cluster of cells known as the morula. This stage precedes the blastocyst stage where the cells differentiate and form an inner cell mass and outer trophoblast layer. A) After implantation is incorrect because the morula forms before implantation. C) Between the blastocyst and gastrula is incorrect as the morula occurs before the blastocyst stage. D) Between implantation and parturition is incorrect as the morula stage occurs much earlier in development.

Correct Answer: A

Rationale: The correct answer is A: Secretory phase. During the secretory phase of the menstrual cycle, the endometrial thickness is greatest due to increased progesterone levels, leading to thickening of the endometrium in preparation for potential implantation of a fertilized egg. This phase occurs after ovulation and is characterized by glandular secretions and increased vascularity to support a potential pregnancy. Summary: - Menstrual phase (B) is incorrect as it is characterized by shedding of the endometrial lining. - Proliferative phase (C) is incorrect as it involves endometrial thickening but not to the extent seen in the secretory phase. - Late follicular phase (D) is incorrect as it precedes ovulation and is primarily characterized by follicular development rather than significant endometrial thickening.

Correct Answer: C

Rationale: The correct answer is C: 7. The cervical spine consists of 7 vertebrae, labeled as C1 to C7. Each vertebra plays a vital role in supporting the head and facilitating neck movement. C1 is known as the atlas, C2 is the axis, and C3 to C7 are structurally similar cervical vertebrae. These vertebrae house the spinal cord and provide flexibility for head movements. Choices A, B, and D are incorrect because the cervical spine does not have 2, 5, or 8 vertebrae. It is crucial to understand the anatomical structure of the spine to determine the correct number of cervical vertebrae.