In clinical practice, we might scrape the arch of your foot with the handle of a reflex hammer. Plantar flexion of the great toe is normal. Dorsiflexion (pointing of the toe upward) is not. But I don't know what the stimulus is in your case.
Picture of congestive heart failure. The heart is a pump that works together with the lungs. The heart pumps blood from the veins through the lungs where oxygen is added and then moves it on to the arteries. This pumping action creates a relatively high pressure in the arteries and a low pressure in the veins.
The left ventricle is the main pumping chamber of the heart, and it is responsible for pumping oxygen-rich blood to the entire body, as stated by the American Heart Association. The human heart consists of four chambers: the right atrium, the right ventricle, the left atrium and the left ventricle.