NEET BIOLOGY

Detailed explanation-1: -The medulla oblongata is the primary respiratory control center. Its main function is to send signals to the muscles that control respiration to cause breathing to occur. There are two regions in the medulla that control respiration: The ventral respiratory group stimulates expiratory movements.

Detailed explanation-2: -Involuntary control Involuntary respiration is under subconscious control. The diaphragm and intercostal muscles are the primary respiratory muscles. They are stimulated by groups of neurons located in the pons and medulla. These neurons form the respiratory control centre.

Detailed explanation-3: -The respiratory center is located in the medulla oblongata and is involved in the minute-to-minute control of breathing. Unlike the cardiac system, respiratory rhythm is not produced by a homogeneous population of pacemaker cells.

Detailed explanation-4: -Involuntary control is mediated by both rhythmic and nonrhythmic systems located in the brainstem. Recent studies have associated the classic respiratory centers with specific nuclei in the brainstem.

Detailed explanation-5: -The ventilation centres in the medulla oblongata respond by increasing the frequency of nerve impulses sent to the diaphragm and intercostal muscles. The diaphragm and intercostal muscles contract and relax faster, increasing the rate of breathing.