Shared Flashcard Set

Details

Cardiovascular System
Cardiovascular System
34
Anatomy
Undergraduate 3
05/24/2011

Additional Anatomy Flashcards

 


 

Cards

Term
What are the two components of the circulatory system?
Definition

cardiovascular

lymphatic

Term
What compoenents make up the cardiovascular system?
Definition
Systemic and pulmonary circuit
Term
Which heart chambers are involved with the systemic circuit?
Definition
Left Atrium, Left Ventricle, Aorta+arteries
Term
Which heart chambers are involved with the pulmonary circuit?
Definition
Right atrium, Right ventricle
Term
Define nervi vasarum
Definition
Nerves that innervate heart
Term
Define Vaso Vasarum
Definition
Vlood vessels that supply nutrients to heart
Term
What constitutes to Tunica Intima?
Definition

Squamous endothelium

Basement Membrane

Lamina Propria

Term
What layers comprise tunica media?
Definition

interal elastic membrane

external elastic membrane

collagen fibers

Term
Which types of arteries experience the highest BP?
Definition
Elastic
Term
What are the different types of arteries?
Definition
muscular, elastic, arterioles
Term
What are the different types of veins?
Definition

Large

Medium

Venules

Term
Describe the structure of capillaries
Definition

Single endothelial layer connected by tight junctions

Surrounded by pericyte

Term
How do capillaries repair from damage?
Definition
Surrounding pericytes can differentiate into smooth muscle, endothelial, or fibroblast to repair damage
Term
How do nutrients cross from tight capillary to tissues?
Definition

Tight junctions are not very permeable

Must be transported by endosomes

Term
Which capillary type contains a diaphragm?
Definition
Fenestrated. Diaphragm is a membrane covering pores
Term

Describe the structure of a sinusoidal capillary

 

Definition

Largest fenestrations

No diaphragm

No endosomes

Term
What is the difference between Lymph vessels and venules?
Definition
Lymph vessels are empty, or only carry lymphocytes
Term
Describe the path of blood starting from the left ventricle
Definition
LV->Semilunar->Aorta->Arteries->vessels->Superior and Inferior venacavae->RA->Tricuspid->RV->Semilunar->Pulmonary artery->lungs
Term
What happens during diastole?
Definition

Heart relaxes

Blood fills atrium (and ventricles passively)

AV valves open

Term
What hapens during systole?
Definition

Atria briefly contract to move blood to ventricle

Ventricle contracts

Semilunar valves open

 

Term
What triggers the atria to contract?
Definition
SA node (pacemaker)
Term
Describe the path of electrical conduction of the heart
Definition
SA node->AV node->AV bundle-> R + L Bundle of His->Purkinje fibers
Term
True or false: nodes of the heart are modified nervous tissue cells
Definition
False
Term
What is the outermost layer of Tissue surrounding the heart?
Definition
Fibrous pericardium
Term
What kind of connective tissue makes up the fibrous pericardium?
Definition
Dense irreguular CT
Term
What layer is directly in contact with the heart?
Definition
serous epicardium
Term
What is the name of the middle layer of CT surrounding the heart?
Definition
serous pericardium
Term
What are the layers of the heart wall
Definition

epicardium (adventitia)

Myocardium (media)

Endocardium (intima)

Term
Are cardiac cells multinucleated or mononucleated?
Definition
Mononucleated
Term
What is an intercalated disk?
Definition
the junction between 2 myocardiocytes
Term
What types of junctional complexes are found on the horizontal region of the intercalated disk?
Definition
tight junctions/desmosomes
Term
What types of junctional complexes are found on the vertical region of the intercalated disk?
Definition
gap junctions
Term
What is ANP? What does it do
Definition

Hormone secreted from atrial myocardial cells

Lower BP

Term
Describe the structure of purjinke fibers
Definition

Modified myocardial cell

Less myofibrils

More mitochondria

Glycogen

 

Supporting users have an ad free experience!