In a collision, a force acts upon an object for a given amount of time to change the object's velocity. The product of force and time is known as impulse. The product of mass â¦ and velocity change is known as momentum change. In a collision the impulse encountered by an object is equal to the momentum change it experiences.Impulse = Momentum Change.
In addition to the locus coeruleus existing as a source of the neurotransmitter norepinephrine within the central nervous system, the adrenal gland can also release norepinephrine during a stress response into the bodyâs blood stream, at which point norepinephrine acts as a hormone in the endocrine system.
Some stress, of course, can be beneficial. The pressure it exerts can be an incentive to accomplish necessary goals. Often, however, stress reaches chronic, harmful levels, and deleterious consequences follow, from compromised immune function to weight gain to developmental impairment (2). The intensity of the stress response is governed largely by glucocorticoids, the primary molecules involved in the stress response. Stress can be ephemeral and beneficial, or it can be long-lasting and harmful, causing suffocation, depression, and paralysis (3). Proper stress management takes on great importance given the wide range of bodily systems impacted by stress hormones. Neurochemistry of Stress