5 Written questions
5 Matching questions
- factors that aid in venous return
- Fenestrated Capillaries
- Systemic Pressure in the right atrium
- Acute Hypotension
- the three important sources of vascular resistance
- a Important sign of circulatory shock.
- b Respiratory pump, muscular pump and vasconstriction of veins under sympathetic control.
- c Have many fenestrations (pores) that allow quick fluid and larger solute exchange.
- d 0mm Hg.
- e Blood viscosity, total blood vessel length, blood vessel diameter.
5 Multiple choice questions
- Formed when venules converge; Composed of three tunics; Return blood to the heart, facilitated by valves in veins and in limbs.
- Blood hydrostatic pressure gradient. - If P increases, BF speeds up.
- Smooth muscle and elastic fiber layer, regulated by sympathetic nervous system.
- Occurs when short term autoregulation cannot meet tissue nutrient requirements. Either the number of vessels to a region increases or existing vessels enlarge.
- Reflects two factors of the arteries close to the heart. The elasticity (compliance or distensibility), and the amount of blood forced into them at any given time.
5 True/False questions
Muscular (Distributing) Arteries → Thick walled arteries near the heart. Act as pressure reservoirs - expand and recoil as blood is ejected from the heart.
Conduct blood from the heart into Muscular Arteries.
Chronic Hypotension → Hint of poor nutrition and warning sign for Addision's disease (adrenal isnsufficiency) or hypothyroidism.
Hypothension → Temporary low BP and dizziness when suddenly rising from a sitting or reclining position.
funciton of Capillaries → Exchange of gases, nutrients, wastes, hormones etc.
Tunica Media's function → Endothelial layer that lines the lumen of all vessels.