Problem 118 - Objective Biology for NEET

Question

The activities of gastrointestinal are under (a) Neural control only (b) Hormonal control only (c) Neither hormonal nor neural control (d) Neural and hormonal control

Step-by-Step Solution

Answer

The activities of the gastrointestinal system are under both neural and hormonal control, thus the answer is (d) Neural and hormonal control.

Step 1: Understand the Gastrointestinal System

The gastrointestinal (GI) system comprises the stomach and intestines, which are involved in the digestion of food. The process involves breaking down food into its basic elements, which can be absorbed and utilized by the body. In order to function and respond appropriately to the body's needs, control systems govern these digestive activities.

Step 2: Examine Neural Control

The GI system is under neural control, meaning it is regulated by the nervous system. This mainly includes the enteric nervous system, a large and complex network of neurons that governs the function of the GI system. It oversees processes such as digestion, absorption and motility.

Step 3: Examine Hormonal Control

The GI system is also under hormonal control. Various hormones such as gastrin, insulin, and cholecystokinin are released in specific sequences. These hormones trigger processes like gastric acid secretion, bile production or insulin release and aid in digestion.

Step 4: Combine the Facts

Combining these pieces of information, we see that the GI system operates under both neural and hormonal control. Both these systems collaborate to ensure the processes of digestion and absorption occur efficiently and effectively.