Assignment Task/s:
Assignment Task Description (mapped to assessment criteria)
Assessment criteria
Prepare and present a PowerPoint presentation about the respiratory system and the cardiovascular system.
Slides must have a balance between text and images. The following content should be covered in the slides:
a) An explanation of the structure and function of the respiratory system ensuring there is reference to the following:
Nasal cavity
Oral cavity
Pharynx
Larynx
Trachea
Bronchus
Left and right lung (pleural membrane, thoracic cavity, visceral pleura, and pleural fluid)
Bronchiole
Alveoli
Intercostal muscles (internal and external)
Diaphragm
b) An analysis of the mechanisms of ventilation at rest and during exercise with reference to the role of the diaphragm and intercostal muscles, and analysis of lung volumes including tidal volume, vital capacity and residual volume.
a) An explanation of the gaseous exchange in the alveoli and tissues, relating structure to function.
b) An explanation of the structure and function of the heart and blood vessels including the different components of the heart (right atrium, right ventricle, left atrium, left ventricle, atrioventricular valves, and the semi lunar valves) and the relevant blood vessels (arteries, capillaries, and the veins).
c) Characteristics of the blood vessels that allows them to perform their function in terms of different layers (tunica intima, tunica media and tunica externa) must be explained and linked to the pressure difference in the vessels.
d) An explanation of the events of the cardiac cycle
e) An explanation of double circulation through pulmonary and systemic circulation
It is advisory that the PowerPoint presentation is no longer than 10 minutes.
The slides must be referenced using credible academic sources.
Notes to accompany the slides must also be submitted.
**Centres are to add details as to how the Presentation will be recorded so that it is accessible for internal and external moderation*
1.1
1.2
1.3
2.1
2.2
2.3
Write an essay for the following title – “Explain the role of negative feedback in controlling ventilation and circulation.”
The essay must include:
Inhibition and activation of the inspiratory and expiratory centres
Activation and deactivation of stretch receptors
Contraction and relaxation of the diaphragm and intercostal muscles
Detection by the baroreceptors or chemoreceptors
Activation of the sympathetic or parasympathetic neurons by the medulla oblongata
Activation of the sinoatrial node (pacemaker), atrioventricular node, Bundle of His, and Purkinje fibres.
The advisory word count for the essay section only is ~500 words. A reference list must be included.
Add the essay as another two or three slides onto the Powerpoint file, do NOT create a separate Word doc.
Academic malpractice, such as buying an assignment or plagiarism, will result in disciplinary procedures.
3.1
Example Answer to Put in PowerPoint Slides
1.1 Explain the structure and function of the respiratory system.
Slide 1: Title Slide
Title: Respiration and Circulation
Student Name
Course Title: Access to HE Health Professionals
Unit Code: WNI080
Date: 3/1/24
Slide 2: Introduction to the Respiratory System
Structure of the Respiratory System:
Nasal Cavity: Filters, warms, and moistens air.
Oral Cavity: Secondary pathway for air.
Pharynx: Passageway for both air and food.
Larynx: Voice box, responsible for sound production and protecting the trachea.
Trachea: Windpipe, a rigid tube leading air to the lungs.
Bronchi: Branches from the trachea into the lungs.
Lungs: Main organs for gas exchange; pleural membrane, thoracic cavity, visceral pleura, and pleural fluid protect the lungs.
Alveoli: Small air sacs where gas exchange occurs.
Slide 3: Ventilation Mechanisms
At Rest:
Diaphragm: Contracts to enlarge the thoracic cavity, causing air to enter the lungs.
Intercostal Muscles: External intercostals elevate the ribs, aiding inhalation.
Lung Volumes: Tidal volume, vital capacity, and residual volume.
During Exercise:
Increased demand for oxygen and expulsion of CO2.
Role of Diaphragm and Intercostal Muscles: Increased contraction rates for faster, deeper breaths.
Slide 4: Gaseous Exchange in the Alveoli and Tissues
Structure-Function Relationship:
Alveolar Walls: Thin, allowing for efficient gas diffusion.
Capillaries: Surround alveoli, providing a large surface area for gas exchange.
Oxygen: Diffuses into the bloodstream; carbon dioxide diffuses into the alveoli for exhalation.
Continued.