Notes 2025-2026 / Verified Content for Allied Health &
Nursing | Rasmussen University
Where is the location of the heart- CORRECT ANSWER ✔✔Mediastinum (in between the
chest)
How much of the heart is left of the midline- CORRECT ANSWER ✔✔2/3
Between what ribs does the heart lie- CORRECT ANSWER ✔✔Between 2nd and 6th
How big is a heart in a adult- CORRECT ANSWER ✔✔Roughly the size of fist
What influences the size and weight of the heart- CORRECT ANSWER ✔✔Age, body weight
and build, physical activity frequency, heart disease
What are the surfaces of the heart- CORRECT ANSWER ✔✔Anterior , inferior, posterior (base),
apex
What part of the heart is in the anterior surface- CORRECT ANSWER ✔✔Ight ventricle
What makes up the inferior surface
- CORRECT ANSWER ✔✔Mostly of the left ventricle
What makes up the base of the heart- CORRECT ANSWER ✔✔Upper portion of the heart, left
atrium, small portion of right atrium, proximal portions of the superior and inferior vena cava
and pulmonary veins
,What forms the apex of the heart- CORRECT ANSWER ✔✔The left ventricle
What location of the heart do you listen for the heart rate- CORRECT ANSWER ✔✔The apex
What are the coverings of the heart- CORRECT ANSWER ✔✔Pericardium, partial pericardium,
serous pericardium, pencardium space
What is the pericardium- CORRECT ANSWER ✔✔Double wall sac that enclose the heart and
helps protect it from trauma
Pericardial space- CORRECT ANSWER ✔✔Lubricant, preventing friction as the heart beats
What sound can you hear when here is no fluid in the pericardial space- CORRECT ANSWER
✔✔Sand paper sound
What are the layers of the heart- CORRECT ANSWER ✔✔Endocardium, myocardium,
epicardium
What is the inner most layer of the heart- CORRECT ANSWER ✔✔Endocardium
What layer of the heart lines the heart chamber- CORRECT ANSWER ✔✔Endocardium
What layer of the heart continues to the layers of vessels- CORRECT ANSWER
✔✔Endocardium
What layer of the heart is the middle layer- CORRECT ANSWER ✔✔Myocardium
, What layer of the heart is thick and muscular- CORRECT ANSWER ✔✔Myocardium
What layer of the heart is responsible for pumping action- CORRECT ANSWER
✔✔Myocardium because its the muscular layer
Now many chamber does the heart have- CORRECT ANSWER ✔✔4 chambers
How many upper chambers does the heart have and what are they- CORRECT ANSWER
✔✔Two: right and left atrium
How many lower chambers of the heart are there and what are they- CORRECT ANSWER
✔✔Two: right and left ventricles
What are the two types of heart valves- CORRECT ANSWER ✔✔Atrioventricular valves (AV)
and semilunar valves (Sv)
What are the two functions of the heart valves- CORRECT ANSWER ✔✔Ensures blood flows
in one direction through the chambers
Prevents back flow of blood
Function of atrioventricular values- CORRECT ANSWER ✔✔Separates atrium and ventricles
What are the two atrioventricular values- CORRECT ANSWER ✔✔Tricuspid value and mitral
valve (bicuspid)
Location of tricuspid valve- CORRECT ANSWER ✔✔Between right atrium and right ventricle
Location of mitral valve- CORRECT ANSWER ✔✔Between left atrium and left ventricle