Lesson 14 - Capillaries, Veins and Arteries
Lesson Objectives
Content Objective: How structure of arteries, veins and capillaries aids in the movement of molecules around the body.
Language Objective: Explain the structure of veins, arteries, and capillaries relate to their structure and how the cardiac cycle causes the heart to pump blood.
Syllabus Details:
B3.2.1—Adaptations of capillaries for exchange of materials between blood and the internal or external environment - "Adaptations should include a large surface area due to branching and narrow diameters, thin walls, and fenestrations in some capillaries where exchange needs to be particularly rapid."
B3.2.2—Structure of arteries and veins - "Students should be able to distinguish arteries and veins in micrographs from the structure of a vessel wall and its thickness relative to the diameter of the lumen."
B3.2.3—Adaptations of arteries for the transport of blood away from the heart - "Students should understand how the layers of muscle and elastic tissue in the walls of arteries help them to withstand and maintain high blood pressures."
B3.2.5—Adaptations of veins for the return of blood to the heart - "Include valves to prevent backflow and the flexibility of the wall to allow it to be compressed by muscle
action."
B3.2.4—Measurement of pulse rates. - "Students should be able to determine heart rate by feeling the carotid or radial pulse with fingertips. Traditional methods could be compared with digital ones."
B3.2.6—Causes and consequences of occlusion of the coronary arteries
Activites
Activity 1 -Your task is to create a one-page summary on veins, arteries, or capillaries.
It should:
Address all relevant syllabus topics
Contain labelled diagrams
Concise
Activity 2 - Identifying Veins, Arteries and Capillaries
Please identify the different blood vessels in these pictures.
Activity 3 - Coronary Heart Disease
Activity 4 - Practice Questions
Home Learning
A. Strengthen Your Skills
B. Expand Your Knowledge