Complete Lab 1 on the Heart in the provided PDF. Labs1_Heart Lab Online (LOCATED IN ATTACHMENTS)
Complete the PDF in Adobe Acrobat and save it (DO NOT COMPLETE IT IN YOUR BROWSER, like Chrome, Internet Explorer, Firefox, or Navigator – they WILL NOT save the answers!).
You can also print and complete the lab by hand, if you’d like, and upload a scan of the images of the completed pages – see instructions below.
The pages must be in order
I have to be able to see the entire page including the page number
the pages must be clear
The pages must be oriented right side up.
Please create a PDF or Word document with the images in order if you scan in the completed pages. Do not submit images that are blurry, upside down or sideways. I must be able to read the entire page.
If you have an iPhone, or an iPad,
If you have an android or google phone:
Another thing that has worked well for me is a free app called “Genius Scan.” Install Genius Scan on your phone, then:
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The circulatory system consists of the heart, blood vessels, blood, and lymphatic vessels.
This series of three labs will assist in your understanding of the anatomy and physiology of each part.
The circulatory system has major roles in the body:
Transport Wastes: Transporting waste products from the tissues of the body to the kidneys.
Transport
Respiratory Gases:
Carrying oxygen from the respiratory surfaces to tissues and carbon dioxide
from the tissues to the respiratory organs.
Transport
Nutrients: Conveying nutrients from the alimentary canal to the tissues.
Protection:
The blood contains cellular components and chemical components that protect
the body via the immune response, the inflammatory response, and the
clotting process.
The heart is a pump with four chambers and valves that maintain a one-way flow of blood. The wall
of the heart includes: (1) cardiac musculature for contraction to propel the blood out of each chamber
and into the major vessels, (2) a fibrous skeleton for attachment of the valves and (3) an internal
conducting system for synchronization of muscle contraction.
Functionally, the heart may be considered to consist of two separate pumps, made up of the right and
left halves. The left half receives oxygenated blood from the lungs and pumps it out to the body
tissues. The deoxygenated blood returning from the tissues of the body passes through the right half
of the heart, which pumps it out to the lungs. Each half of the heart consists of an atrium which
receives the blood and a thick-walled, muscular ventricle that pumps it out, hence a four chambered
heart.
A. Objectives
1. Examine and draw the microscopic anatomy of cardiac muscle tissue.
2. Identify specific structures of the gross anatomy of the heart on images.
3. Trace blood flow through the structures of the heart.
B. Histology of Cardiac Muscle
1. Examine and draw sections of heart muscle. Label the following on your drawings:
• Branched cardiocytes
• Striations
• Intercalated discs
• Nucleus
C. Gross Anatomy of the Heart
1. Read and work through the exercises on pp. 217-223 in the Visual Guide to
become familiar with the anatomy of the heart.
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C. Using the images of the heart in Canvas, be able to identify the following structures and identify
functions if applicable
Base & apex of the heart
Anterior interventricular sulci & Posterior interventricular sulci
Atrioventricular sulcus (coronary sulcus)
Pericardium
visceral pericardium (epicardium)
parietal pericardium
pericardial cavity
myocardium
endocardium
Chambers
right and left atria
right and left ventricles
interatrial septum
interventricular septum
Coronary Circulation
right and left coronary arteries
circumflex artery
anterior interventricular artery
posterior interventricular artery
marginal artery
coronary sinus
great cardiac vein
middle cardiac vein
Heart Valves
right atrioventricular valve (tricuspid)
left atrioventricular valve (bicuspid)
pulmonary semilunar valve
aortic semilunar valve
chordae tendineae
papillary muscles
Great Vessels
superior vena cava
inferior vena cava
ascending aorta
aortic arch
descending aorta
pulmonary trunk
pulmonary arteries
pulmonary veins
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_____________________________ ANSWER SHEET – HEART LAB
PART C: Use your course resources to trace blood flow through the heart
You are a RBC. Right now, you are sitting in the right atrium of the heart. The heart contracts and
you begin to flow. List all the structures of the heart through which you will flow – in order – on your
way back to the right atrium. Type the names of the structures into the textbox below.
1. _Right Atrium_______________________
2. __________________________________
3. __________________________________
4. __________________________________
5. __________________________________
6. __________________________________
7. The lungs________________________
8. __________________________________
9. __________________________________
10. _________________________________
11. _________________________________
12. _________________________________
13. _________________________________
14. _________________________________
15. _________________________________
16.To the body________________________
17. _________________________________
18. _________________________________
PART B: CARDIAC MUSCLE HISTOLOGY
Cardiac Muscle
Power: 40x
Use your course resources to identify
the features of cardiac muscle. Type
into the textboxes to label the
following structures onto the image of
cardiac muscle to the left.
1. cardiocytes
2. striations
3. nucleus
4. intercalated disc