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Question
Since it is the sino-auricular node, which initiates the impulses in the heart of mammal, it is known as
Since it is the sino-auricular node, which initiates the impulses in the heart of mammal, it is known as
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Solution
The correct option is D Myogenic
The myogenic heart has myogenic contractions. Myogenic contraction refers to a contraction initiated by the myocyte cell itself instead of an outside occurrence or stimulus such as nerve innervation. The sino-atrial node (SAN) is a mass of nodal tissue found in the upper part of right auricle. It generates the nerve impulses, which is responsible for starting the contraction of the heart. Vertebrates have a myogenic heart. The SA node has myocytes, known as pacemaker cells, responsible for the generation of impulse which spreads all over the heart and the heart contracts and relaxes.
The myogenic heart has myogenic contractions. Myogenic contraction refers to a contraction initiated by the myocyte cell itself instead of an outside occurrence or stimulus such as nerve innervation. The sino-atrial node (SAN) is a mass of nodal tissue found in the upper part of right auricle. It generates the nerve impulses, which is responsible for starting the contraction of the heart. Vertebrates have a myogenic heart. The SA node has myocytes, known as pacemaker cells, responsible for the generation of impulse which spreads all over the heart and the heart contracts and relaxes.
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