Cardiovascular Flashcards
Vasa vasorum serves as a function analogous to that of which of the following?
Coronary Arteries- supply blood to the heart
Trace the flow of blood throughout the heart starting from the systematic venous circulation.
Vena Cava-Rt. Atrium-AV Valve-Rt. Ventricle- Pulmonary-Semilunar Valve- LungsPulmonary Veins- Lt. Atrium- Tricuspid Valve- Lt. Ventricle- Aortic Valve-Body
During light microscopic examination of a tissue, you note a vessel that has no smooth muscle, no elastic lamina, but a large amount of formed elements in the lumen. Which of the following vessels are you examining?
Venule
What are some of the secretory and metabolic fx. of endothelial cells?
Secretory( Anti-Aggregatory/Anti-Mtogenic), Metabolic(Angiotensin Converting Enzyme), Plasticity (Angiogenesis)
Vesicles can form in the ____ of the endothelial cells to facilitate transport.
Cytoplasm
True or False of Ventricles
Walls contain Purkinje Fibers of the right and left branches from the AV bundle
True
True or False.
Tunica Media Homologous to Myocardium
True
What type of microcirculation is found in the kidney?
Arteriole
Capillary
Arteriole
What type of microcirculation is found in the skin?
Arteriovenous
What type of microcirculation is found in the liver?
Venule
Capillary
Venule
Portal System
What type of capillary would you typically find in the Liver?
Sinusoidal capillaries
Pulmonary veins carry
O2 from lungs to heart
What portion of the arterial wall is most likely to be affected by elastic fibers?
Tunica Media
True or False of Continuous Capillaries
Most common in brain and muscle
True
Where would you find formed elements of blood?
Lumen
What is a pericyte?
Maintain basic structure of the capillary
What is a throughfare channel?
Forms vascular shunt
Pericytes
Help maintain visibility of endothelial cells
What are the three capillary types?
Continuous
Fenestrated
Sinusoidal (Discontinuous)
Where are continuous capillaries found?
Skin
Muscle
Lung
Brain
Where are fenestrated capillaries found?
Kidney
Endocrine
Intestines
Where are Sinusoidal (Discontinuous) capillaries found?
Liver
Spleen
Bone Marrow
Endocrine
Which fenestrated capillary example has no diaphragm but a basement membrane?
Kidney
What are the fenestrated sinusoids?
adrenal glands, adenohypophysis
What is Vesicular Transport in Capillaries?
Pinocytic pits & vesicles which move larger molecules across endothelium.
What is Transendothelium Channels in Capillaries?
Vesicles can merge together to form channels for rapid transport
IEL, endothelium and CT are all found in which layer of vessels?
Tunica Intima
EEL, elastic fibers are found in which layer of vessels?
Tunica Media
CT, VV, nerves are all found in which layer of vessels?
Tunica Adventitia
Tunica Media is thicker in arteries or veins?
Arteries
Tunica Adventitia is thicker in arteries or veins?
Veins
Types of Circulation -> Arteriole- Capillary Bed
venule
Types of Circulation -> Arteriovenous Anastomosis
skin
Types of Circulation -> Arteriole-Capillary-Arteriole
kidney
Types of Circulation -> Venule- Capillary- Venule
Liver; portal systems
Which layer of heart are Purkinje Fibers found in?
Endocardium
Which layer of heart is the Ventricular Wall attached to?
Myocardium
Wave of Depolarization begins at which portion of the heart?
Apex
SA NODE is known as the ____ of the heart?
Pacemaker
___(Artery)__ branches into the myocardium.
Coronary Artery
True or False; Lymphatic System functions in Immunologic Support
True
What closes the valve in the lymphatic vein?
Back pressure
How are endothelial cells anchored to lymphatic capillaries and connective tissue?
Filaments; elastic fibers
