The Hurnan Heart, lash. ) nnect.mheducation.com/flow/connect.html Vessels Concep

Question

The Hurnan Heart, lash. ) nnect.mheducation.com/flow/connect.html Vessels Concepts He The body has an extrinsic cardiac control center in the portion of the brain that controls internal organs, which can alter the beat of the heart by way of the autonomic nervous system nodal The autonomic system is divided into the parasympathetic division, which promotes functions of a resting state, and the sympathetic division, which brings about responses to increased activity or medulla oblongata puise The parasympathetic division decreases SA and AV when we are inactive, and the sympathetic system increases these nodes activity when we are active or excited activity thyroid stress The hormones epinephrine and norepinephrine, which are released by the also stimulate the heart sleep When we are frightened. the heart pumps faster and stronger due to stimulation and because of the release of epinephine and parasympathetic norepinephnne adrenai medulia

Explanation / Answer

1) The body has an extrinsic cardiac control center in the Medulla oblongata, a portion of the brain that controls the internal organs, which can alter the beat of the heart by way of the autonomic nervous system.

2) The autonomic system is divided into the parasympathetic division, which promotes functions of a resting state, and the sympathetic division, which brings about responses to increased activity or stress.

3) The parasympathetic division decreases SA and AV nodal activity when we are active, and the sympathetic division increases these nodes when we active or excited.

4) The hormones Epinephrine and Norepinephrine which are released by the Adrenal medulla, also stimulates the heart.

5) When we are frightened heart pumps faster and stronger due to Sympathetic stimulation, and because of the release of epinephrine and norepinephrine.

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