Which of the following types of insulin is categorized as long-acting?

The correct type of insulin categorized as long-acting is Ultralente and Lantus. Long-acting insulins are specifically designed to release insulin steadily over a prolonged period, providing a baseline level of insulin that helps manage blood glucose levels throughout the day and night.

Lantus, for instance, is known for its continuous and predictable insulin delivery, making it effective for patients who need stable control of their blood glucose levels. Ultralente, though less commonly used today, also offered a long duration of action. The mechanism of action for these types of insulin is essential for managing diabetes effectively, especially for those requiring consistent blood glucose control without frequent dosing.

Other categories of insulin, such as regular and Toronto (short-acting), or Novolog and Humalog (rapid-acting), work differently and are typically utilized for controlling postprandial (after meal) blood sugar levels rather than providing a long-lasting effect. Similarly, NPH and Detemir, while they do have a longer duration than short-acting insulins, are not classified as long-acting in the same sense as Lantus and Ultralente. Detemir can be considered an intermediate or long-acting insulin, but it does not have