Nokea
Haversian canals are seen in
- A. Cortical bone
- B. Cancellous bone
- C. Spongy bone
- D. N/A
Correct Answer: A
Rationale: The correct answer is A: Cortical bone. Haversian canals are found in cortical bone, which is the dense outer layer of bone tissue. These canals contain blood vessels, nerves, and lymphatics, allowing for the exchange of nutrients and waste products. Cancellous bone (B) is spongy bone with a network of trabeculae and does not contain Haversian canals. Spongy bone (C) is a type of bone tissue with a porous structure but lacks the organized Haversian system seen in cortical bone. "N/A" (D) is not a valid option as it does not provide any relevant information.
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Between puberty and menopause, monthly, the following occurs :
- A. the maturation of a single secondary ovarian follicle;
- B. the transformation of a primordial follicle into a secondary one;
- C. the release of an oocyte;
- D. the release of a de Graaf follicle;
Correct Answer: C
Rationale: The correct answer is C: the release of an oocyte. During the menstrual cycle, ovulation occurs where a mature egg (oocyte) is released from the ovary. This typically happens around the middle of the cycle in response to hormonal changes. This process is essential for fertilization and pregnancy to occur.
A, B, and D are incorrect because:
A: the maturation of a single secondary ovarian follicle - This occurs before ovulation, not during the menstrual cycle.
B: the transformation of a primordial follicle into a secondary one - This is an earlier stage in follicle development, not a monthly occurrence.
D: the release of a de Graaf follicle - The Graafian follicle is the mature follicle that releases the oocyte during ovulation, not a monthly event.
What effect does luteinizing hormone uterine (fallopian) tubes is called the (LH) have on a female?
- A. LH promotes enlargement of
- B. body the female's breasts.
- C. fundus
- D. LH has no effect on a femal
Correct Answer: D
Rationale: Rationale:
1. LH is a hormone released by the pituitary gland.
2. Its main role in females is to trigger ovulation.
3. LH does not directly affect the uterine tubes or breast enlargement.
4. Therefore, the correct answer is D: "LH has no effect on a female."
Summary:
A, B, and C are incorrect because LH does not promote breast enlargement or affect the uterine tubes. The correct answer, D, is supported by the physiological functions of LH in the female reproductive system.
Which of the following is an example of ovoviviparity?
- A. Honeybees lay soft eggs within the hive
- B. Sharks hatch from shell-covered fertilized eggs within the female's body.
- C. Birds hatch from shell covered fertilized eggs laid within a nest.
- D. Fetal mammals obtain nourishment from the mother through a placent
Correct Answer: C
Rationale: Ovoviviparity is a reproductive strategy where fertilized eggs develop within the female's body but are not nourished by the mother. Choice C is correct because birds lay fertilized eggs within a nest where they hatch, indicating the eggs were developed internally. Choice A is incorrect as honeybees do not exhibit ovoviviparity. Choice B is incorrect as sharks exhibit viviparity, where embryos develop inside the mother but are nourished directly. Choice D is incorrect as it describes placental nourishment in mammals, which is not characteristic of ovoviviparity.
The hormone that works with estrogen to prepare the endometrium for implantation of a fertilized egg is
- A. LH
- B. FSH
- C. ADH
- D. progesterone
Correct Answer: D
Rationale: Progesterone is the correct answer because it is the hormone that works with estrogen to prepare the endometrium for implantation of a fertilized egg. Progesterone helps thicken the endometrium, creating a favorable environment for implantation. LH and FSH are involved in ovulation and follicle development, not endometrial preparation. ADH is antidiuretic hormone, which regulates water balance in the body, not related to endometrial preparation.
A 67-year-old male client had serum laboratory tests performed during his annual examination. The nurse reviews his results, as
- A. specific antigen: 10 ng/mL (10 mcg/L); prolactin: 5 ng/mL (217.4 pmol). What action by the nurse is best?
- B. Assess for possible galactorrhea with breast discharg
- C. Note the possibility of a testicular tumor.
- D. Communicate that results were normal.
Correct Answer: D
Rationale: The correct answer is D. The nurse should communicate that the results were normal because the specific antigen and prolactin levels fall within the normal range for a 67-year-old male. Specific antigen levels around 10 ng/mL are typical for this age group, and prolactin levels of 5 ng/mL are also within normal limits. Option A is not necessary as the results are normal. Option B is incorrect as galactorrhea is not indicated by the lab results. Option C is also incorrect as there is no indication of a testicular tumor based on the lab values. Therefore, the best course of action is to inform the client that the results are normal.