Module 04 Case Study: Cardiovascular and Immune/Lymphatic Systems Each question is worth 1 point, unless otherwise noted.
I’ve Fallen Over and I Can’t Get Up: Part I—"Children Playing in The Heat" Questions
1. What signs and symptoms did Greg exhibit when he was in the house? Some signs and symptoms Greg experienced were thirst, dizziness, and turgor.
2. Was Mrs. Myron correct when she said that Greg was dehydrated? Which signs and symptoms are consistent with this notion? Mrs. Myron thought that it was not necessary to seek medical treatment. Do you think she was correct? I believe Mrs. Myron was correct when she said Greg was dehydrated. All his signs and symptoms are symptoms of dehydration. I would probably have taken him to the hospital because he passed out and continues to do so, another factor would have been his temperature. I’ve Fallen Over and I Can’t Get Up: Part II—"The High School Football Game" Questions
1. What were Greg’s signs and symptoms before the game and during the warm up? Can you think of any reasons why Greg exhibited these signs and symptoms? Before the game and during warm up Greg experienced dizziness, loss of appetite, flushed, and sweaty. Greg may be experiencing dehydration.
2. Greg is taken to the hospital after being injured during the game. What problems do you think the physicians will find with Greg when they examine him, or do you think he is only suffering from dehydration? Greg has probably experienced a concussion from the hit he took.
I’ve Fallen Over and I Can’t Get Up: Part III—"The Next Day In The Hospital" Questions
1. What are Greg’s new signs and symptoms? Do you have a diagnosis for Greg’s problem? Greg is now feeling nauseous, weak, and has a headache. I think he has a concussion.
2. The chart below shows that when baroreceptors detect a drop in arterial blood pressure the sympathetic nervous system stimulates the heart and the smooth muscles in the walls of the arteries and the veins. Write increase or decrease to indicate the effect of the sympathetic nervous system on the variable in each numbered box. (3 points)
I’ve Fallen Over and I Can’t Get Up: Part IV—"The Neurologist" Questions
1. What evidence suggests that Greg suffered from a mild concussion? Greg feels nauseous, weak, and has a headache which indicates a concussion.
I’ve Fallen Over and I Can’t Get Up: Part V—"The Follow-Up Visit" Questions
1. What is the relative position between the heart and the head (or baroreceptors in the carotid sinus) when you are lying down? What is the relative position between the heart and the head (or baroreceptors in the carotid sinus) when you are standing? What happens to the pressure of the blood as it travels against gravity in a standing person? When you are lying on your back, blood is able to flow more easily. If you move from a seated or supine position to a standing position, there may be a momentary drop in your blood pressure, baroreceptors sense this drop and signal the heart to beat faster.
2. The baroreceptor reflex insures that the pressure of the blood entering the brain remains within defined limits, irrespective of body position. Under these circumstances, predict the blood pressure in the aorta of a standing person and a person who is lying flat on their back.
I’ve Fallen Over and I Can’t Get Up: Part VI—"The Diagnosis" Questions
1. How would a pacemaker help Greg’s condition?
It would keep his heart rate at more of a steady pace.
2. If a pacemaker is implanted to control Greg’s heart rate, what life changes will be forced upon him? Do you think Greg will ever play competitive sports again? I do not think it is recommended he play competitive sports. He will have to watch his physical activity and not want to exert himself too much.
Resistance Is Futile…Or Is It?: Part I—"HIV and the...
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