Circulatory:

• Carotid sinus and aortic arch: increase in arterial blood pressure would stimulate baroreceptors that send impulses to the medulla oblongata to stimulate the CIC resluting in Bradychardia.
• Right atrium Distension stimulates stretch receptors that woudl inhibit the CIC resulting in tachycardia (Bainbridge Reflex)
• Chemoreceptors in Lt Ventricles that are stimulated by chemical compounds (e.g. nicotine) resulting in Bradychardia.
• Aortic and carotid Bodies chemoreceptors are sensitive to changes in the oxygen and carbon dioxide concentrations as well as pH. A decrease in oxygen, an increase in carbon dioxide and a decrease inpH result in tachycardia.

Extracirculatory:

• Lungs: inflatiopnof the lungs result in stimulation of stretch receptors in the bronchi and bronchioles resultin in inhibition of the CIC - Tachycardia
• Skeletal Muscles: contraction of skeletal muscles causes tachycardia.
• Trigger zones: Heavy blow to certain areas of the body (larynx, abdomen or testes) can cause a strong vagal response resultin in Bradycardia.
• Eyes - Occulo Cardiac Reflex - Pressure over the eyes can cause bradycardia
• Pain - Cutaneous or Deep pain results in tachycardia while Visceral pain results in bradycardia.