When a sympathetic response is triggered in the body the heart rate increases, and the strength of the contractions of the heart also increases. The airways dilate which increases airflow. Blood vessels constrict, and therefore blood pressure rises.
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Increased heart rate, stronger heart contractions, and constriction of blood vessels. These responses help prepare the body for physical activity or a perceived threat by increasing blood flow and oxygen delivery to muscles.
The sympathetic division prepares the body for 'fight or flight' reactions.
Stimulating the sympathetic division has these results:
The heart pumps harder, faster, and with greater volume.
Blood supply to the lungs, arms and legs is increased, while blood flow to the digestive organs is reduced.
Drugs that can suppress the sympathetic nervous system include beta-blockers, which block the effects of adrenaline and noradrenaline on beta-adrenergic receptors, and alpha-blockers, which block the effects of noradrenaline on alpha-adrenergic receptors. These medications are commonly used to treat conditions like hypertension, anxiety, and certain cardiac disorders.
The autonomic nervous system contains two branches called the sympathetic and parasympathetic nervous systems. The sympathetic nervous system activates the "fight or flight" response, while the parasympathetic nervous system promotes rest and digestion.
The sympathetic nervous system branches include the sympathetic trunk and the splanchnic nerves. The sympathetic trunk contains the sympathetic ganglia, which are responsible for sending signals to various target organs in the body. The splanchnic nerves innervate the abdominal organs and play a role in regulating their function.
Plants are split into six different divisions. These divisions include magnoliophyta division, coniferoohyta division, pteridophyta division, bryophyta division, and lycopodiophyta division.
The conifer is a division of Pinophyta. It is also known to be a division of Coniferophyta or the Coniferae. It is within the Kingdom Plantae