<span>The electrical stimulus in the heart begins in the APEX OF THE ATRIA at the SINOATRIAL NODE. The heart has its own electrical conduction system that enables it to work as a unit and supply oxygenated blood throughout the body. This system needs to work in a sequential manner so that the delivery of unoxygenated blood to the lungs will not backflow to other parts of the heart and the body. </span>
Answer:
Stimulus discrimination
Explanation:
Stimulus discrimination is referred to the ability for an individual or animal, as the case may be, to discriminate between two different stimuli and react differently. From the question, Micah was frightened by a little dog when he was 2 years old. The stimulus in this example will be Micah's fear of little dogs. The question clearly stated that Micah does not fear large dogs, which means that he reacts differently to a different stimulus (large dogs). If Micah responds with fear when he sees large dogs, then this phenomenon will be known as Stimulus generalization. The difference between stimulus discrimination and stimulus generalization is that while discrimination entail differing response to different stimuli, generalization entails same response to different stimuli.
3.) exposure to toxic chemicals
Answer: The effects that he would NOT likely experience is an increased risk in cardiovascular disease. The correct answer is C. By increasing his weekly intake of the omega-3 fatty acids, he is lowering the risks for cardiovascular disease. These fatty acids help reduce the risk of heart failure in men and women. Some foods that contain omega-3 fatty acids are; grass fed beef, flaxseed oil, salmon, and cod.
