Blood pressure is carefully regulated by a negative feedback control system in t

Question

Blood pressure is carefully regulated by a negative feedback control system in the body. When the blood pressure falls below a set point, this decreased pressure is detected by baroreceptors (pressure receptors) in the aorta and carotid arteries. These receptors send signals to a region of the brain known as the medulla oblongata. This region of the brain integrates incoming signals and send signals to the heart to increase the strength of contraction and to the blood vessels, to constrict arterioles so as to increase the blood pressure, returning it to normal. Based on this information, identify each of the parts of this control system: a. Controlled variable b. Sensor c. Control center d. Effector

Explanation / Answer

the blood pressure in our body can be controlled through nervous system. this type of regulation of blood pressure is called as short term regulation of BP.

Nervous system controls BP through vasomotor centre. vasomotor centre regulates BP through baroreceptors situated in carotid sinus and wall of aorta . baroreceptors are also known as pressoreceptors.

here the controoled variable is blood pressure

sensor is baroreceptor that sense any change in blood pressure

control center is medulla oblongata that receive signals through baroreceptors and sends signals in turn to control BP

effector organ is heart which receive signal from medulla oblongata and work to control BP

Related Questions

Navigate

• Browse (All)
• Browse B
• Subjects

---