lab assignment heart lab 3
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School
Wake Tech *
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Course
169
Subject
Medicine
Date
Dec 6, 2023
Type
docx
Pages
13
Uploaded by PrivateAnteaterMaster973
Labeling Activities
***For each picture, label the view (Is it the posterior view of the heart, anterior view of the heart or an internal view of the heart, left side specifically or right side specifically?) ***
Below, please label the left and right atria, the coronary sinus, the inferior vena cava, the base,
the apex, specific pulmonary vessels and the specific coronary vessels that you can see.
For the following image, Label AND trace the path of blood through the heart. Label the important structures and draw arrows depicting the path of blood through the heart. For arteries and veins, indicate where the blood is coming from or going to (ie. Body or Lungs).
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In the following image, Label the inferior and superior vena cava, brachiocephalic trunk, the pulmonary
veins, left and right atria, left common carotid artery, the fossa ovalis, the pulmonary arteries, the aortic
arch, the left subclavian artery
In the following image, Label AND Trace the path of the action potential through the heart
label: sinoatrial node, inferior vena cava, ascending aorta, pulmonary trunk, pulmonary semilunar valve, left pulmonary artery, interventricular septum, atrioventricular node, bundle of HIS, apex, left and right atria,
left and right bundle branch, left and right ventricle, Purkinje fibers. You may have to draw an arrow to where the structure would be.
Draw a star where the action potential starts, then draw arrows showing the path of the action potential.
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In the following image, label all anterior structures of the heart.
In the following image, please label all valves, all chambers and all layers of the heart.
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On the following images, please label the following structures: the aortic arch, left and right pulmonary arteries and veins, all chambers, superior and inferior vena cavae, left common carotid artery, left subclavian artery, any specific coronary vessels that you see, apex, base.
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On the following images, please label the lungs, left ventricle, right ventricle, endocardium, myocardium, epicardium/visceral pericardium, pericardial space, parietal and fibrous pericardium. Page 5
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Practice Questions
1.
Name 6 structures of the heart that would be considered deep/internal.
-Endocardium
-Myocardium
-Mitral valve
-Tricuspid Valve
--AV Node
-SV Node
2.
Name 10 structures of the heart that would be considered superficial.
-Pericardium
-Aorta
- Pulmonary Artery
-Pulmonary Vein
- Inferior Vena Cava
- Superior Vena Cava -Right & Left ventricle
- Coronary artery and coronary sinus - AV groove and interventricular groove
-Right and Left Atrium 3.
Name 6 structures on the superior half of the heart.
Left & Right Atrium AV & SV Node
Superior Vena Cava & Pulmonary Artery
AV Valves
Fossa Ovalis
Aorta & Pulmonary Vein
4.
Name 3 structures on the inferior half of the heart.
Right & Left Ventricle
Inferior Vena Cave
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Interventricular septum 5.
For questions (1-4) above
a.
Circle any that are attached to the right atrium.
b.
Star any that are attached to the left ventricle.
c.
Box any that are attached to the right ventricle.
6.
The function of the mitral valve is to prevent blood flowing from the left ventricle
back into the
left atrium .
7.
The function of the pulmonary semilunar valve is to prevent blood flowing from the
Pulmonary trunk
back into the right ventricle .
8.
The function of the tricuspid valve is to prevent blood flowing from the right ventricle back into the right atrium .
9.
The function of the aortic semilunar valve is to prevent blood flowing from the
Aorta back into the left ventricle .
10.
The function of the atrioventricular bundle is to carry an action potential from the
AV node
to the _
purkinje fibers .
11.
The function of the purkinje fibers is to carry an action potential from the apex of the heart
to the walls of the ventricles .
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12.
The function of the right bundle branch is to carry an action potential from the
AV node
to the right ventricle
.
13.
The function of the left bundle branch is to carry an action potential from the
AV node
to the left ventricle
.
14.
What two vessels lie within the anterior interventricular sulcus?
Left anterior interventricular artery and great cardiac vein 15.
What two vessels lie within the posterior interventricular sulcus?
Posterior interventricular artery and middle cardiac vein 16.
What vessels lie within the coronary sulcus?
Right Marginal artery, and circumflex artery, small cardiac and great cardiac vein anterior
17.
Which two structures work together to prevent valve prolapse, which is when the valves open backwards instead of closing tightly?
Tendious cords and papillary muscles 18.
These two structures are fetal structures.
Foramen ovale and the ductus arteriosus
19.
What do those structures become, respectively (Question 19)
Foramen Ovale becomes fossa ovalis.
Ductus Arteriosus becomes ligamentum arteriosum. 20.
Complete the pathway of blood through the heart. Three structures are filled in to get you started.
1. inferior vena cava 2. Superior vena cava
3.right atrium
4.right ventricle
5. pulmonary semilunar valve
6. pulmonary artery
7.left & right pulmonary artery
8. lungs
9. left atrium
10.mitral valve
11.left ventricle
12.aortic semilunar valve
13.aorta
14.body
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21.
Complete the pathway of the electrical current through the heart below.
1.
Another word for the pacemaker =
SA Node
2.
Intercalated discs/gap junction of the wall of the heart
3. AV NODE
4. BUNDLE OF HIS
5. BUNDLE OF BRANCHES
6. PURKINJE FIBRES
7. Intercalated discs/gap junction of the VENTRICLES
22.
Please give the anatomical difference between the SA node and AV node.
The SA node is locate in the right atrium, close to the point of entry of the superior vena cava. It is longer, ellipsoidal, an flattened. 90-100 bpm. First component of the conducting system. Pacemaker
The AV node is located in the wall of the right atrium close to the coronary sinus.. It is half-
ovaled shaped and short. 40-50 bpm. Second component of the conducting system. Pacesetter.
23.
Please give the physiological difference between the SA node and AV node.
SA node small body of muscular tissue in the wall of right atrium, producing electrical impulse making a pace of contraction of the heart and controls activity of contraction. Pumps more blood
into the tissues. Transmits signals to the AV node. Regulated by autonomic nerves and parasympathetic and sympathetic nervous system . AV node is cluster of cells that controls the heart rate by receiving electrical impulse from SA node. It relays and intensifies cardiac impulses received from SA node to the ventricles. Controlled by the influence of the SA node impulses. Ensures the electrical impulses do not move too rapidly . Page 9
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