Chapter 26 Bleeding Introduction & Cardiovascular System Review

Front

Which statement best distinguishes external from internal bleeding?

Back

External bleeding occurs outside the body where it is visible; internal bleeding occurs inside the body where it is hidden.

Front

What is the immediate purpose of the one-way valves in the heart’s chambers?

Back

To prevent backflow and keep blood moving in the correct direction

Front

A patient with a deep laceration has slow-moving blood at the wound, vessel wall injury, and normal platelets. Based on the clotting description, which combination most increases the chance of clot formation at the site?

Back

Blood stasis and vessel wall damage with functional platelets

Front

During a severe emergency, the autonomic nervous system prioritizes blood flow to vital organs. Which set of organs is most likely to receive redirected blood?

Back

Heart, brain, lungs, and kidneys

Front

Strategic Thinking: A trauma reduces blood volume significantly. Which outcome best describes what happens if the cardiovascular system fails to provide sufficient circulation to every body part?

Back

Hypoperfusion (shock) develops because tissues no longer receive adequate blood flow.

Front

Which blood component primarily carries oxygen to cells and transports carbon dioxide to the lungs for removal?

Back

Red blood cells

Front

Skill/Concept: Which pathway correctly traces blood flow from the heart through vessels to the heart again as described?

Back

Aorta → arteries → arterioles → capillaries → venules → veins → venae cavae → heart

Front

Strategic Thinking: Which scenario best illustrates changing perfusion needs described for different tissues?

Back

Skeletal muscles require minimal blood supply during sleep but a large supply during exercise.

Front

Uncontrolled bleeding after traumatic injury is most directly linked to which condition?

Back

Poor blood flow leading to hypoperfusion (shock)

Front

In an average adult, what acute blood loss threshold most accurately indicates the body cannot tolerate it without significant negative changes in vital signs?

Back

Greater than 20% of total blood volume, or more than 2 pints (approximately 1 liter)