Science Homework Help

I’m working on a Anatomy question and need guidance to help me study.

• 1. Cardiac output is a function of stroke volume and heart rate. Name the intrinsic and extrinsic factors that regulate each of these two determinants. For each factor, explain how they regulate the cardiac output.
• 2. Draw a diagram that shows the progression of blood from the heart through the arteries, capillaries, veins and back to the heart. On each side of the diagram, indicate increase or decrease of pressure, and vessel diameter. Use arrow or triangle shape to show these changes.

3.Draw a diagram that summarize the control of the cardiovascular system (including heart and blood vessels) by the ANS (both the parasympathetic and sympathetic branches).Your drawing must be labelled, titled, and accompanied by a text that explains the control. Be specific, indicate the effect of the ANS on the heart contractility, vasomotor tone, heart rate, cardiac output, blood pressure (not necessarily in this order).

4.Draw the structure of the wall of a blood vessel (vein or arteries) and indicate the components (example: collagen, smooth muscle, elastin, etc) for each tunic. Next to each component, indicate the type(s) of blood vessel(s) for which this component plays an important role in term of function, and indicate the function (example: maintaining BP, produce resistance to blood flow) Be specific in the type of vessel (ie: not just arteries but elastic or muscular arteries).

5. Describe the structure and function of the portal system.