What regulates heart rate?

Answer 1

Homeostatic mechanisms for regulation of breathing rate The body is mainly automatic for the rate of ventilation and does not notice minor variations that are the result of homeostatic regulations. An individual is only controlling their own breathing when holding their breath, speaking or taking deep breathes. When the body's metabolism produces extra carbon dioxide breathing rates increase slightly until it is blown out of the body in expiration. If a period of forced ventilation such as gasping is presented to the body it will lower the carbon dioxide levels in the body and homeostatic mechanisms will slow or stop breathing until levels return to normal.

Answer 2

The heart is controlled by two branches, which are called the sympathetic nervous system and the parasympathetic nervous system. The sympathetic nervous system starts to work when our body muscles are working, fear or stress. When this happens it increases heartbeat and heart rate, on the other hand the parasympathetic nervous system works when our body is resting, and it calms the body and makes the environment peace.

The main aim of the homeostatic is to maintain good environment for internal organs, so to keep the heart rate in good level the receptors sends messages to the brain and the brain then sends responds to the cardiac centres by nerve impulses. By this activity the nerve slows the heart rate down and deceases BP back to normal. When the body is in fear or stress the hormone called adrenaline is releases, this makes the heart rate to work faster by boosting the effect of the sympathetic nervous system. When the heart rate is increased the heart beat then also started beating faster. For example when the body produces too much of carbon dioxide, breathing rate increases so to get the breathing level back to normal homeostatic slows or stops breathing.

Answer 3

It maintains homeostasis by carrying nutrients to your cells and removing their wastes. It also helps by carrying hormones throughout the body.

Answer 4

The heart rate is regulated by the medulla oblongata in the brain. The central nervous system, autonomic nervous system, and hormones all play a role.

Answer 5

what happens if the homeostatic control mechanisms for the heart rate fail??