Which numbered structure(s) in the diagram of the fish control rolling and yawing?

Here are the answers to the questions from the image: 11. Which numbered structure(s) in the diagram of the fish control rolling and yawing? The dorsal fin (1) helps prevent rolling and provides stability. The caudal fin (3) is responsible for propulsion and steering, which involves controlling yaw. The correct option is A. A 12. Where in the digestive system of man is hydrochloric acid produced? Hydrochloric acid is produced by the parietal cells in the lining of the stomach. The correct option is C. C 13. In which numbered structure of the villus are fatty acids and glycerol transported? Fatty acids and glycerol are absorbed into the epithelial cells, re-esterified into triglycerides, and then transported into the lacteal (lymphatic capillary), which is labeled as 2. The correct option is A. A 14. Which structure in the mammalian brain is concerned with involuntary and reflex activities? The medulla oblongata is part of the brainstem and controls vital involuntary functions such as breathing, heart rate, and many reflexes. The correct option is B. B 15. Water enters a germinating seed through the: The micropyle is a small pore in the seed coat that allows water and oxygen to enter the seed, initiating germination. The correct option is D. D 16. Where does implantation take place in the female reproductive system? Implantation, the attachment of the fertilized egg to the uterine wall, occurs in the uterus. The correct option is B. B 17. Which numbered structure secretes adrenaline? Adrenaline (epinephrine) is secreted by the adrenal glands, which are located on top of the kidneys and are labeled as 3 in the diagram. The correct option is B. B 18. What happens during stretching of the arm? Stretching the arm (extension) involves the contraction of the triceps muscle (7), which is the extensor, and the relaxation of the biceps muscle (3), which is the flexor. The correct option is B. B What's next?