5 Written questions
5 Matching questions
- factors that aid in venous return
- Vascular anastomoses
- Sinusoidal Capillaries
- artery routinely used to take pulse
- a Have large fenstrations and intercellular clefts for the greatest permeability, even allowing passage of blood cells.
- b Respiratory pump, muscular pump and vasconstriction of veins under sympathetic control.
- c Merging blood vessels, more common in veins than arteries. Provdes alternate pathways (collateral channels) for blood to reach a given body region. If one branch is blocked, the collateral channel can supply the area with adequate blood supply.
- d Formed when capillary beds unite. Allow fluids and WBC's to pass from the bloodstream to tissues. Collect blood from capillaries and pass it on to veins.
- e Radial artery.
5 Multiple choice questions
- Neural and hormonal controls - counteract functuations in blood pressure by altering peripheral resistance.
- It is easily changed by altering blood vessel diameter.
- Kidney release of renin generates angiotensis II, which causes vasoconstriction. Increase BP.
- Have many fenestrations (pores) that allow quick fluid and larger solute exchange.
- Automatic adjustment of blood flow to each tissue in proportion to its requirements at any given point in time.
5 True/False questions
Hypertension → Temporary low BP and dizziness when suddenly rising from a sitting or reclining position.
Chronic Hypotension → Hint of poor nutrition and warning sign for Addision's disease (adrenal isnsufficiency) or hypothyroidism.
What is directly proportional to Blood Flow (F)? → 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.
Angiogenesis → Occurs when short term autoregulation cannot meet tissue nutrient requirements. Either the number of vessels to a region increases or existing vessels enlarge.
What is Blood Flow inversely proportional with? → Blood hydrostatic pressure gradient. - If P increases, BF speeds up.