Sympathetic nervous system and Respiratory system
1. Describe the impact of an increase in sympathetic nervous system activity on the cardiovascular system. In your answer, explain how cardiac output and blood pressure are affected by increased sympathetic nervous system activity.
2. a. List the FOUR (4) layers of the respiratory membrane.
b. Describe TWO (2) key features of the respiratory membrane and explain how each of these features contributes to gas exchange.
c. Describe how travelling to high altitude will affect the rate of oxygen diffusion across the respiratory membrane. Use Daltons Law to explain your answer
3. a. Describe how carbon dioxide is transported in the blood from the tissues to the lungs.
b. Describe how homeostasis is maintained in response to increased PCO2.
c. Using an increase in pH as an example, describe how and why decreasing the level of
ventilation can contribute to the normalisation of arterial blood pH.
Student’s name
Institutional affiliation
Sympathetic nervous system and respiratory system
Question 1: effect of increased sympathetic nervous system activity on cardiac output.
Increased sympathetic activity impacts the heart and the vascular system. The cardiac performance curve becomes more sensitive to changes in the right atrium pressure, leading to increased cardiac output. The sympathetic nervous system often stimulates the SA and AV nodes, leading to increased heart rate, which equals increasing cardiac output.
Question 2(a) four layers of the respiratory system
* Respiratory mucosa which epithelium and supporting lamina propria)
* Submucosa.
* Cartilage and muscle layer.
* Adventitia
Question 2(b) feature of the respiratory system and how it contributes to gaseous exchange
There are many alveoli to increase surface areas for gaseous exchange surface area
Alveoli have a thin membrane to allow faster diffusion of gases across the membranes
Question 2(c); how high altitude affected rate of oxygen diffusion across respiratory membrane using Dalton’s law
The percentage of oxygen in inspired air may be constant at different altitudes. However, the reduction in atmospheric pressure at higher altitudes decreases the partial pressure of inspired oxygen, hence,...
👀 Other Visitors are Viewing These APA Essay Samples:
-
Sample Coursework in Chemistry
1 page/≈275 words | No Sources | APA | Biological & Biomedical Sciences | Coursework |
-
Questions on "Egg and Sperm" and “Myth of the Vaginal Orgasm”
1 page/≈275 words | No Sources | APA | Biological & Biomedical Sciences | Coursework |
-
Questions on Evolution and Early Art
2 pages/≈550 words | No Sources | APA | Biological & Biomedical Sciences | Coursework |