Which factor causes the act of ovulation?

Correct Answer: B

Rationale: The correct answer is B: LH levels. Ovulation is triggered by a surge in luteinizing hormone (LH) levels, which causes the release of the mature egg from the ovary. LH surge is a key event in the menstrual cycle that leads to ovulation. Explanation: 1. LH surge stimulates the release of the egg from the dominant follicle in the ovary. 2. This surge typically occurs around the middle of the menstrual cycle. 3. Ovulation occurs within 24-36 hours after the LH surge. 4. FSH (Choice C) is involved in follicle development but does not directly cause ovulation. 5. Estrogen (Choice D) plays a role in the menstrual cycle but does not directly trigger ovulation. 6. Blood pressure (Choice A) is not involved in the process of ovulation. Summary: LH levels are the primary factor that causes ovulation by triggering the release of the egg from the ovary

Correct Answer: A

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

Correct Answer: D

Rationale: The correct answer is D: Penis. The penis is composed of three cylindrical masses of erectile tissue (two corpora cavernosa and one corpus spongiosum) surrounded by fibrous tissue. The corpora cavernosa fill with blood during an erection, leading to rigidity. The other choices (A: Testes, B: Prostate, C: Bladder) do not fit the description of being composed of three cylindrical masses of erectile tissue surrounded by fibrous tissue. The testes are responsible for sperm production, the prostate is a gland that produces semen, and the bladder is a hollow muscular organ for storing urine.

Correct Answer: B

Rationale: The correct answer is B: Cremaster muscle. Line "G" points to the cremaster muscle because it is the muscle responsible for raising and lowering the testes to regulate their temperature. This muscle is located within the spermatic cord and is crucial for maintaining optimal conditions for sperm production. The other choices are incorrect because: A: The dartos muscle is responsible for wrinkling the scrotal skin but is not depicted by line "G." C: Fascia refers to connective tissue and does not match the description of the muscle shown by line "G." D: The tunica albuginea is a fibrous coat around the testis but is not represented by line "G."

Correct Answer: C

Rationale: The correct answer is C: Cough. Sexually transmitted diseases (STDs) are transmitted through sexual activity, not through coughing. Syphilis (A), Gonorrhea (B), and Genital Warts (D) are all STDs that are transmitted through sexual contact. Cough (C) is not a sexually transmitted disease as it is typically spread through respiratory droplets. Therefore, C is the correct answer as it does not fit the criteria of being an STD.