I need the question on the 2nd page answered, not the pre-lab question. The firs
ID: 3522947 • Letter: I
Question
I need the question on the 2nd page answered, not the pre-lab question. The first photo is just to give you background info on the lab itself. The question about inrtroducing error is the one I need answered.Goals: 1. To become familiar with reflex circuitry in the nervous system 2. To understand the effect of sensory stimuli on efferent output 3. To become familiar with designing, executing, and communicating a scientific research project The autonomic nervous system (ANS) is part of the peripheral nervous system. Its goal is to maintain homeostasis of the visceral organs. In this lab we w examine the mammalian diving reflex, which the ANS. In mammals, submerging the face in water initiates several physiological responses that involves maximize the time that can be spent under water. This includes a reduction of heart rate (bradycardia). The reflex arc is as follows: the trigeminal nerve (CN5) of your face, nose, and mouth senses the cold temperature of the water, relays this information to the brainstem, which then sends parasympathetic efferent instructions to the heart via vagus nerve (CN10). In humans, mild bradycardia is also caused by breath-holding without submersion. The physiological goals of the diving reflex are to reduce the energetically costly aerobic activity of the heart. General Instructions: Work in groups of 4-6. Come prepared to dive your face; all students must participate. Please limit your stimulant use in the hour prior to class (eg. caffeine). Design an experiment to test the diving reflex. At your disposal you have pulse oxymeters (to measure heart rate), snorkel masks, snorkels, buckets, and different temperatures of water. All individuals in your group will dive twice, once for the control and once for the treatment (alternate the order and rest in between dives). Dive lengths are 40 seconds long. If one or more members of your group cannot hold their breath for 40 seconds, all members of the group should use a snorkel. Record the heart rate at the 40 second mark, immediately before you tell the student that time is up. Write up one formal lab report lab report found near the start of this manual. You are welcome to analyze the statistics together with me on the class computer. for your group. Follow instructions for writing a formal Pre-lab: (7 points) Make a mind map for the structure and function Autonomic Nervous System.
Explanation / Answer
The physiology and nervous system are highly sensitive to external cues. Experiments which deal with these systems must be carried out very carefully. In the present study, the treatment expt was carried out before the control. This experiment invovled physiological changes due to holding the breath. It creates a nerve stimuli and secretions of various hormones and neurotransmitters to slow down the heart rate, to reduce the metabolic rate and to reduce the blood pressure. If the control activity is done after this treatment, the differences between them may not be clearly observable. This type of error is called Type II error, where we falsly assume that the null hypothesis is true. Null hypothesis in this case is that holding beath in water does not elicit any physiological changes.
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.