Blood Flow Through the Heart (Made Simple in 10 minutes) — Transcript

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1. 0:00Hey hey future nurses. It's your boy
2. 0:02Nurse Mike here and today we're tackling
3. 0:04something that shows up everywhere from
4. 0:07anatomy to patho to med surge. Blood
5. 0:10flow through the heart. Now, I know this
6. 0:13topic can feel downright overwhelming
7. 0:15with all the valves, vessels, and
8. 0:17ventricles, but stick with me, and by
9. 0:20the end of this video, you'll be able to
10. 0:21sketch out this simple blood flow
11. 0:23through the heart, not only from memory,
12. 0:25but also be able to explain it to your
13. 0:28classmates like a pro. So, grab your
14. 0:31notes, maybe a snack, and get comfy,
15. 0:34because you're about to learn how the
16. 0:36heart really pumps life throughout the
17. 0:38body.
18. 0:42Now, let's start with why this matters.
19. 0:45Blood flow is the delivery system for
20. 0:47oxygen, nutrients, and hormones. It's
21. 0:50also how your body gets rid of waste
22. 0:52like carbon dioxide and other things.
23. 0:55So, blood vessels are simply the
24. 0:57highways of the body. Now, what about
25. 0:59the heart? The heart is a powerhouse,
26. 1:02constantly moving blood through two
27. 1:04circuits, one to the lungs and one to
28. 1:07the rest of the body. That's what keeps
29. 1:09us going. So to make this simple, think
30. 1:11of the heart like a two room house. On
31. 1:14the right side, we got blue
32. 1:16deoxxygenated blood heading to the lungs
33. 1:18to pick up oxygen. And on the left side,
34. 1:20we have red oxygenated blood headed out
35. 1:23to the body. This is what's known as
36. 1:26cardiac output. Blood going out to the
37. 1:29body. Now each side has two chambers. An
38. 1:32atrium on top, which I call the attit.
39. 1:39So, just remember A before V, atrium
40. 1:42before ventricle. The alphabet will
41. 1:44never let you down. Now, here's the road
42. 1:47map. There are 12 total steps in blood
43. 1:50flow through the heart. Six on the right
44. 1:52side and six on the left side. We're
45. 1:55going to hit every single one of them
46. 1:57together. So, let's walk it through step
47. 2:00by step. Step number one, de oxygenated
48. 2:03blood. That blood that's already been
49. 2:05used by the body now returns to the
50. 2:08heart through the superior venneava and
51. 2:11the inferior venneava. Fancy words for
52. 2:14the entrance to the right side of the
53. 2:16heart. The superior venneava brings it
54. 2:18from the upper body. And what do you
55. 2:20think the inferior venneava does? Well,
56. 2:22yes, it brings it through the lower
57. 2:24body. Now, both of those empty into the
58. 2:26right atrium, which is the top chamber
59. 2:29on the right side of the heart.
60. 2:31Remember, the atria are the addicts.
61. 2:33Then blood moves to the triricuspit
62. 2:35valve. And here's a trick to remember
63. 2:37that try before you buy. So triricuspit
64. 2:41comes first on the right side and the
65. 2:43bicuspit comes second on the left side.
66. 2:46Now after passing through the tricuspid
67. 2:48valve on the right side, then blood
68. 2:50drops down into the right ventricle.
69. 2:53Remember those basements. Next the right
70. 2:55ventricle contracts and pushes blood
71. 2:58through the pulmonic valve. Now always
72. 3:00let the name help you. Pulmonic. Think
73. 3:02pulmonary for lungs. From there, it
74. 3:05enters the pulmonary artery, which by
75. 3:08the way is the only artery that carries
76. 3:10deoxxygenated blood. So the pulmonary
77. 3:13artery sends blood away from itself into
78. 3:17the lungs to get oxygen. Okay, so let's
79. 3:21recap the right side real quick. Blood
80. 3:23goes from the body that's de oxygenated
81. 3:26without oxygen right into the venneava
82. 3:29then the right atrium through the
83. 3:31triricuspid valve down to the right
84. 3:33ventricle through the pulmonic valve
85. 3:36then pulmonary artery and finally the
86. 3:39lungs
87. 3:41okay now that blood has been oxygenated
88. 3:43inside the lungs it's ready to make its
89. 3:46way back to the heart and out to the
90. 3:49body remember this is cardiac output
91. 3:52puts all the blood being pumped out of
92. 3:54the heart in 1 minute. It returns
93. 3:57through the pulmonary veins, the only
94. 3:59veins that carry oxygenated blood and
95. 4:02flows into the left atrium. From there,
96. 4:05it passes through the bicuspit valve,
97. 4:08which is also called the mitro valve or
98. 4:10the arterio ventricular valve. Remember,
99. 4:14try before you buy. We use the tricuspid
100. 4:17valve on the right. So the bicuspit
101. 4:19valve comes next on the left. After
102. 4:22that, blood moves into the left
103. 4:24ventricle, the strongest chamber of the
104. 4:26heart. That's why I call the left
105. 4:28ventricle the big mama because it has to
106. 4:31pump all that blood out to the body. So
107. 4:34when the left ventricle contracts, it
108. 4:36sends blood through the aortic valve
109. 4:39into the aorta, which is another big
110. 4:42vessel. The aorta is the largest artery
111. 4:45in the human body. And from there, the
112. 4:48blood is distributed to your brain,
113. 4:50organs, arms, legs, and everywhere it
114. 4:53needs to go, like down to your pinky
115. 4:55toes. So, let's go over a few tricks to
116. 4:58lock it in. First, let's start with the
117. 4:59valves. Remember the order, TP, MA. So,
118. 5:03that's triricuspid, pulmonic, mitral,
119. 5:07and finally aortic. And if you're not
120. 5:10into pneumonics, then use the simple
121. 5:12phrase, toilet paper, my aorta. you
122. 5:15know, whatever works to help you
123. 5:17remember for the exam. You can also
124. 5:20remember that veins vacuum blood back to
125. 5:22the heart, the double V's. And for
126. 5:25arteries, think of the double A's.
127. 5:27Arteries push blood away from the heart.
128. 5:30And again, you can always think A before
129. 5:33V. Atria always comes before ventricles.
130. 5:37So, let's walk it through one more time,
131. 5:39nice and smooth. It all starts with de
132. 5:42oxygenated blood coming through the
133. 5:45superior and inferior venneava into the
134. 5:48right atrium. Then it flows to the
135. 5:50tricuspid valve and then into the right
136. 5:52ventricle the basement. Then through the
137. 5:54pulmonic valve into the pulmonary artery
138. 5:58and on its way to the lungs. Now after
139. 6:01the red blood cells get oxygen inside
140. 6:03the lungs blood comes back to the
141. 6:05pulmonary veins into the left atrium.
142. 6:08Then through the bicuspit valve, the
143. 6:11blood enters the left ventricle, which
144. 6:13again is the big mama. Then finally
145. 6:16through the aortic valve out to the
146. 6:18aorta and to the rest of the body. And
147. 6:21just like that, you've got it. You did
148. 6:25it. You now know more about blood flow
149. 6:27through the heart than most people
150. 6:29walking around out there. So, if you
151. 6:31still need help remembering it all, you
152. 6:33can re-watch this video or better yet,
153. 6:36check out our music video called Hotel
154. 6:38Cardiac, where we sing about this in an
155. 6:40animated way in a parody to Hotel
156. 6:43California. Or you can check out our
157. 6:45full nursing school support system where
158. 6:48we break down complex topics just like
159. 6:51this one into short animated videos that
160. 6:54are easy to follow with memory tricks
161. 6:56built right in. Our entire system was
162. 6:59designed to help nursing students just
163. 7:01like you retain only the most important
164. 7:04testable info and saving you 60% less
165. 7:08study time. For every one simple nursing
166. 7:11video that you watch covers about 1 hour
167. 7:14of textbook reading. So if you're tired
168. 7:16of feeling overwhelmed, stressed, or
169. 7:18stuck, then it's probably time that you
170. 7:20give it a try. will help you study less,
171. 7:23remember more, and feel way more
172. 7:25confident for your exams and ultimately
173. 7:28the ENCLEX. If this helps, hit the like
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175. 7:33just like this. And if you got a heart
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180. 7:45and I'll see you on the next one.