case study : Consider this case: Marlee, a 47-year-old elementary school teacher, goes to her physician, Dr. Tyler, complaining of dizziness, fainting, and shortness of breath. She also complains of episodes of diarrhea. Physical examination reveals the following: Pallor is evident on visual inspection; Marlee appears chronically ill. Heart rate is 70 BPM while lying down; heart rate is 68 BPM when seated and while standing. Blood pressure was taken in 3 positions and the following findings were charted: BP = 120/74 mm Hg while lying down BP = 98/54 mm Hg when seated BP = 84/48 mm Hg while standing Heart and lung auscultations were normal. Abdominal and general neurologic exams are both normal. Routine laboratory studies are normal. questions: -Describe the “effector organ(s)” structure involved here. Which layer(s) is/are mostly likely respond(s) to increase or decrease arterial diameters? -The baroreceptor reflex is part of the peripheral nervous system that has sensory and motor pathways. Also, the peripheral nervous system has two important divisions. What are they? -Do you feel Marlee’s problem involves her somatic or autonomic nervous system? If the autonomic system, which division? Why? -Changes in blood pressure occur throughout the day. Short term mechanisms, like the baroreceptor reflex, maintain a steady flow of blood to the tissues to sustain life despite postural changes. However, there can be elevations of blood pressure orchestrated by the nervous system. Describe an example where the nervous system causes changes in the normal functioning of the circulatory system. -Why is it important to maintain a fairly constant blood pressure?
case study :
Consider this case:
Marlee, a 47-year-old elementary school teacher, goes to her physician, Dr. Tyler, complaining of dizziness, fainting, and shortness of breath. She also complains of episodes of diarrhea.
Physical examination reveals the following:
- Pallor is evident on visual inspection; Marlee appears chronically ill.
- Heart rate is 70 BPM while lying down; heart rate is 68 BPM when seated and while standing.
- Blood pressure was taken in 3 positions and the following findings were charted:
BP = 120/74 mm Hg while lying down
BP = 98/54 mm Hg when seated
BP = 84/48 mm Hg while standing
- Heart and lung auscultations were normal.
- Abdominal and general neurologic exams are both normal.
- Routine laboratory studies are normal.
questions:
-Describe the “effector organ(s)” structure involved here. Which layer(s) is/are mostly likely
respond(s) to increase or decrease arterial diameters?
-The baroreceptor reflex is part of the peripheral nervous system that has sensory and motor
pathways. Also, the peripheral nervous system has two important divisions. What are they?
-Do you feel Marlee’s problem involves her somatic or autonomic nervous system? If the autonomic
system, which division? Why?
-Changes in blood pressure occur throughout the day. Short term mechanisms, like the baroreceptor
reflex, maintain a steady flow of blood to the tissues to sustain life despite postural changes.
However, there can be elevations of blood pressure orchestrated by the nervous system. Describe
an example where the nervous system causes changes in the normal functioning of the circulatory
system.
-Why is it important to maintain a fairly constant blood pressure?
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
