The blood pressure measures the force created by the heart beat (blood) on the walls of blood vessels. The blood pressure can show an increase with age due to lack of elasticity and narrowing of arteries. The regulatory centers of cardiac and vasomotor controls the sympathetic neuron to increase the blood pressure with regard to increase in blood volume. These regulating centers are located in the medulla oblongata show vasoconstriction while increasing heart rate. When the heart beat increases the amount of blood entering the arteries increases therefore the constriction of blood vessels takes place. The pressoreceptors in located in the aorta and carotid arteries send impulses to the vasomotor center to increase …show more content…
The alpha adrenergic neurotransmitter with their receptors cause’s vasoconstriction and beta adrenergic receptors increases the heart rate and show vasodilation. (Davidyan, 2017)
The parasympathetic nervous system decreases the blood pressure as well as heart rate through vagus nerve. The diameter of the blood vessels is regulated by the vasomotor system. Vasomotor nerves made up of sympathetic motor nerves transmit impulses to the vasomotor center to innervate smooth muscles in arteries which maintain a vasomotor tone to bring about uniform contraction. (Cliffsnotes, 2017)
The blood pressure of a normal healthy person at rest is 120mmHg/80mmHg. But if the blood pressure increases abnormally than the normal level, this condition is referred to as hypertension. When the small blood vessels are subjected to high pressure due to the deposition of atheroma is more likely to rupture or been blocked. If this condition is not treated in time it leads to organ damage. Hypotension is low level of blood pressure than the set point. The basic activities of the body will not be carried out efficiently as blood supply is reduced. (Guyenet,