Heart rate increases while running is correct. Heart rate is controlled by the sympathetic branch of the autonomic nervous system.
Hand is withdrawn quickly after touching a hot surface is incorrect. Withdrawing a hand from a hot surface is a withdrawal reflex, which is a type of somatic reflex. This reflex is initiated by an external stimulus and is processed from the spinal cord directly to the muscles of the hand, thereby causing them to contract. This type of reflex is not controlled by the autonomic nervous system.
Stomach muscles contract to aid digestion is correct. Muscles of the stomach are controlled by the parasympathetic branch of the autonomic nervous system.
Salivary glands release secretions in response to the presence of food is correct. Salivary glands responding to the presence of food is controlled by the parasympathetic branch of the autonomic nervous system.
Blood vessels constrict to reduce the flow of blood to the skin is correct. The constriction and relaxation of blood vessels is controlled by the sympathetic branch of the autonomic nervous system.
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