A 14-year-old boy is at the pediatric clinic for a checkup. What physical changes of puberty will the nurse indicate are related to the production of testosterone?

Decrease in production of sebaceous gland secretions

Increase in muscle mass and strength

Stimulation of production of white cells and platelets

Promotion of growth of small bones

Answer and Explanation

The Correct Answer is B

A. Decrease in production of sebaceous gland secretions is incorrect. Testosterone actually increases sebaceous gland activity, leading to an increase in oil production, which can contribute to acne during puberty.

B. Increase in muscle mass and strength is correct. Testosterone plays a key role in the development of secondary male characteristics, including increased muscle mass, strength, and the growth of larger bones.

C. Stimulation of production of white cells and platelets is incorrect. While testosterone affects many bodily functions, it does not directly stimulate the production of white cells or platelets.

D. Promotion of growth of small bones is incorrect. Testosterone is more closely associated with the growth and development of larger bones (e.g., long bones), leading to height increases during puberty. It does not promote the growth of small bones.

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Correct Answer is C

Explanation

A. The middle area of the fallopian tube is not the typical site for fertilization. The fertilization process most often occurs in the outer third of the fallopian tube, closer to the ovary.

B. The lower segment of the uterus is where implantation occurs after fertilization, but fertilization itself happens earlier in the fallopian tube.

C. The outer third of the fallopian tube near the ovary is the most common site of fertilization, where the sperm meets the egg shortly after ovulation.

D. The upper portion of the uterus is where the embryo implants after fertilization, but fertilization itself takes place in the fallopian tube, not in the uterus.

A. Relaxation of the uterus smooth muscle B. Constriction of cervical smooth muscle C. Stretching of the pelvic smooth muscle D. Contraction of the vaginal smooth muscle

Correct Answer is A

Explanation

A. Relaxation of the uterine smooth muscle occurs during labor and is key for allowing the cervix to dilate. Uterine contractions, which involve smooth muscle contractions, help facilitate cervical dilation and fetal descent into the birth canal.

B. Constriction of cervical smooth muscle would not facilitate dilation. In fact, cervical dilation is enabled by the relaxation of cervical smooth muscle in response to uterine contractions.

C. Stretching of the pelvic smooth muscle helps accommodate the descending fetus, but the primary action for dilation is the uterine contractions and relaxation of the cervix.

D. Contraction of the vaginal smooth muscle occurs during labor but does not directly impact the cervical dilation or fetal descent, as the primary muscular adaptation involved in labor is uterine contractions.

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A 14-year-old boy is at the pediatric clinic for a checkup. What physical changes of puberty will the nurse indicate are related to the production of testosterone?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

Where is the most common site for fertilization?

Correct Answer is C

Explanation

Correct Answer is A

Explanation

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