Nokea
Contraindications to IUD
- A. Young age
- B. Nulliparity
- C. Ectopic pregnancy
- D. Abnormal uterine bleeding
Correct Answer: C
Rationale: Correct Answer: C - Ectopic pregnancy
Rationale:
1. IUDs do not prevent ectopic pregnancies.
2. IUD insertion increases the risk of ectopic pregnancy.
3. Ectopic pregnancy is a serious complication of IUD use.
Summary of other choices:
A: Young age - Age alone is not a contraindication.
B: Nulliparity - Being nulliparous is not a contraindication.
D: Abnormal uterine bleeding - It is a relative, not absolute contraindication.
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Soft spots that refers to unossified areas in an infants skull is termed as
- A. Sulcus
- B. Sinus
- C. Fontanelle
- D. Suture
Correct Answer: C
Rationale: The correct answer is C: Fontanelle. Fontanelles are soft spots in an infant's skull where the bones have not yet fully fused. They allow for the baby's brain to grow and accommodate the rapid brain development during the early months of life. Sulcus refers to a groove or furrow, sinus is a cavity within a bone, and suture is the line where two bones meet. These terms do not specifically refer to the unossified areas in an infant's skull, making them incorrect choices.
What effect does luteinizing hormone (LH) have on a female?
- A. LH promotes enlargement of the female's breasts.
- B. LH has no effect on a female
- C. LH causes secondary sex characteristics to develop in a femal
- D. LH triggers ovulation in a female
Correct Answer: D
Rationale: The correct answer is D: LH triggers ovulation in a female. LH is a hormone released by the pituitary gland that stimulates the release of an egg from the ovary during the menstrual cycle. This process is known as ovulation. It is a crucial step in the reproductive cycle of females.
A: LH does not promote the enlargement of female breasts. Breast growth is primarily regulated by estrogen and progesterone.
B: LH does have a significant effect on females, particularly in the reproductive system.
C: While LH does contribute to the development of secondary sex characteristics in females, its main role is in triggering ovulation.
The primitive stem cell of spermatogenesis, which is found on the periphery of each seminiferous tubule, is called a ________.
- A. spermatogonium
- B. spermatid
- C. primary spermatocyte
- D. secondary spermatocyte
Correct Answer: A
Rationale: The correct answer is A: spermatogonium. Spermatogonium is the primitive stem cell of spermatogenesis located at the periphery of seminiferous tubules. It undergoes mitosis to produce more spermatogonia or differentiate into primary spermatocytes. Spermatid and secondary spermatocyte are later stages in spermatogenesis, not the primitive stem cell. Primary spermatocyte is the immediate progeny of spermatogonium following differentiation.
Spermatogonia
- A. are germ cell.
- B. are diploid cell.
- C. are male gametes.
- D. have flagell
Correct Answer: A
Rationale: The correct answer is A because spermatogonia are indeed germ cells that give rise to sperm cells through the process of spermatogenesis. They are diploid cells, not male gametes. Spermatogonia do not have flagella; instead, mature sperm cells have flagella for motility. So, the correct answer is A because spermatogonia are the precursor cells for sperm cells, they are diploid, and they do not have flagella.
The only movable facial bone is _____________.
- A. Mandible
- B. Maxilla
- C. Vomer
- D. Ethmoid
Correct Answer: A
Rationale: The correct answer is A: Mandible. The mandible is the only movable facial bone as it forms the lower jaw and is connected to the skull by the temporomandibular joint, allowing for movements like chewing and speaking. Maxilla, Vomer, and Ethmoid are all facial bones, but they are fixed in place and do not have the same range of motion as the mandible. Maxilla forms the upper jaw, Vomer is a bone in the nasal cavity, and Ethmoid is a bone between the eyes. Therefore, the mandible is the only bone among the options that is capable of movement, making it the correct answer.