Question

question 4 (multiple choice worth 3 points) (06.07 mc) which of the following developmental events is correctly matched with its trimester? first trimester—tissues and organs form; amniotic sac forms; neurulation occurs second trimester—ovarian follicles form; amniotic sac forms; neurulation occurs first trimester—bone replaces cartilage; eyebrows form; ovarian follicles form second trimester—eyebrows form; tissues and organs form; bone replaces cartilage question 5 (multiple choice worth 3 points) (06.07 lc) after leaving the vas deferens, sperm cells pass through the epididymis testes urethra ovum

Explanation:

Question 4

To solve this, we analyze each option based on prenatal development trimesters:

• Option 1 (First trimester—tissues and organs form; amniotic sac forms; neurulation occurs): In the first trimester, major organ systems develop, the amniotic sac forms early, and neurulation (neural tube formation) happens.
• Option 2 (Second trimester—ovarian follicles form; amniotic sac forms; neurulation occurs): Amniotic sac and neurulation occur in the first trimester, not the second. Ovarian follicles form later, but not in the second trimester for this context.
• Option 3 (First trimester—bone replaces cartilage; eyebrows form; ovarian follicles form): Bone replacing cartilage and eyebrows forming are second - trimester events.
• Option 4 (Second trimester—eyebrows form; tissues and organs form; bone replaces cartilage): Tissues and organs form in the first trimester, not the second.

The path of sperm is: testes → epididymis → vas deferens → ejaculatory duct → urethra. After the vas deferens, sperm moves to the ejaculatory duct and then the urethra.

• Epididymis: Sperm is stored here before moving to the vas deferens, so it's not after the vas deferens.
• Testes: Sperm is produced here, and it moves to the epididymis first, not after the vas deferens.
• Urethra: This is the correct path after the vas deferens (via ejaculatory duct).
• Ovum: This is a female gamete, not part of the male sperm path.

Answer:

A. First trimester—tissues and organs form; amniotic sac forms; neurulation occurs

Question 5