Cardiovascular System Lab Quiz Flashcards
Where is the heart located?
In the thoracic cavity of the mediastinum
Layers of the heart (outside –> in)
- Fibrous pericardium
- Parietal pericardium
- Visceral pericardium (aka epicardium)
- Myocardium:
Fibrous pericardium
connective tissue sac attached to the roots of
the great vessels
Parietal pericardium
serous membrane that lines the inner surface of
the fibrous pericardium
Pericardial cavity
space between parietal and visceral pericardium
Visceral pericardium (aka epicardium)
serous membrane that lines
the outer surface of the heart
What is the relationship between parietal and visceral pericardium?
They are continous
Myocardium
the heart muscle (cardiac cells)
What is unique about the myocardium?
Authorhythmic
Endocardium
endothelial tissue lining heart chambers. It is continuous
with endothelium lining the blood vessels.
Cranial and Caudal Vena Cava
Large veins that return blood from the body to the heart
Cranial
blood from the head, neck, and forelimbs
Caudal
blood from lower parts of the body
Pulmonary Veins
– Receive oxygenated blood from the lungs and bring it back to the
heart
Pulmonary Arteries
– Branch into right and left pulmonary arteries that bring deoxygenated
blood from the heart to the lungs
• Also opposite!
Aorta
– Oxygen rich blood exits the heart through the aortic arch and is
pumped systemically
Diastole vs Systole
What is the 1st stop of blood into the heart?
Atria
What do the ventricles do?
Push blood out to the lungs or body
Atrioventricular Valves
–Tricuspid (right AV)
–Bicuspid (mitral, left AV)
How to atrioventricular valves open?
- Chordae tendineae
* Papillary muscles
Semilunar Valves
–Pulmonary
–Aortic
How do semilunar valves open?
• Pressure from ventricles
Arteries
arterioles move away from the heart
–Deliver oxygen rich blood to tissues
–Coronary arteries=heart’s blood supply
Capillaries
where gas exchange takes place.
–One cell thick-diffusion
–Form connection between arteries and veins
Venules
veins moves towards the heart
–Bring oxygen depleted blood back to the heart and lungs
–One way values
Erythrocytes
Red Blood Cells
How are RBC’s created?
Erythropoiesis in bone marrow
Leukocytes
White Blood Cells
Types of WBC
Neutrophils, Eosinophils, Basophils, Monocytes, Lymphocytes
Thrombocytes
Platlets
What are platlets important for?
Clotting factors
What is plasma made of?
–90% Water
–Electrolytes, hormones, nutrients, waste, etc.
–Carrier proteins
• Serum
brady-
slow
tachy-
fast
cardi/coron
heart
angi/vas
vessel (blood or lymph)
pulm/pneum/pnea
lungs/breathing
thromb
clot/coagulation
ven/phleb
vein
-graphy/graph
process of recording/instrument used to record
-gram
finished record
