Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
Didn't know it?
click below
Knew it?
click below
Don't know
Remaining cards (0)
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Cardiovasc System

Small arteries   arterioles  
Small veins   Venules  
White blood cells typicall leave circulation to enter tissues at _____   postcapillary venule  
______ are the smallest vessels. They consist of a single layer of _______ cells and their ________.   Capillaries, endothelial cells, basal lamina
Specialized ______ fibers synchronize the contraction of the heart to make contractions more efficient.   cardiac muscle  
Electrical impulses are initiated at the ______ node, or the pacemaker   sinoatrial (SA)  
Impulses spread through the atria to the _______ node   atrioventricular (AV)  
The impulse is transmitted to the ventricles by the ______   bundle of His  
Bundle of His divides into ____ and ____ bundle branches   right, left  
Further branching into subendothelial branches is known as ______   Purkinje fibers  
Composed of endothelial cells, basal lamina and subendothelium connective tissue layer.   Tunica intima  
Composed of circumferentially arranged smooth muscle   Tunica media  
Outermost connective tissue layer, composed mostly of collagenous tissue and a few elastic fibers   Tunica adventitia  
Small blood vessels that nourish the tunica media are called ______. Is in this tunic layer in large vessels: _______   vasa vasorum, tunica adventitia
A network of autonomic nerves found in tunica adventitia that controls the contraction of smooth muscle   nervi vascularis  
Elastic arteries have multiple sheets of ____. They function primarily as _____.   elastic layers, conduction tubes
Largest elastic arteries:   Aorta, Pulmonary artery, Main branches of aorta (brachiocephalic, common carotid, subclavian, common iliac arteries)
In Tunica Intima layer, Weibel-Palade bodies contain _____   von Willebrand factor (coagulating factor VII)  
Most von Willebrand factor is synthesized by __________.   arterial endothelial cells.  
Endothelial cells maintain nonthrombogenic barrier between platelets and sebendothelial tissue by producing ______ and ________   anticoagulants (thrombomodulin), and antithrombogenic sustances (prostacyclin and tissue plasminogen activator)
Damage to endothelial cells causes them to releast prothombogenic agents such as ________ and _______   von Willebrand factor, plasminogen activator inhibitor  
Endothelial cells modulate blood flow and vascular resistance by secreting ______ and _____.   Vasoconstrictors (endothelin, angiotensin-converting enzyme, {ACE}), Vasodilators (endothelial-derived relaxation factor {EDRF/NO}, prostacyclin)
Foam cells are derived from _____ and _____   macrophages and smooth muscle  
Muscular arteries (also known as _____ arteries). It has more ____ and less ____ in the tunica media than elastic arteries.   medium artery, smooth muscle, elastin
In muscular artery, the tunica media is composed almost entirely of ______   smooth muscle  
Muscular arteries have a prominent ______   internal elastic membrane  
Continuous capillaries are found in: ____, ____, and ____   muscle, lung, and CNS  
______ junctions, a type of tight junctions, seal continuous capillaries together   occluding  
Relatively unspecialized cells derived from the same precursor cell that gives rise to endothelial cells   Pericytes  
Fenestrated capillaries are found in: _____, _____, and ______   endocrine glands, intestinal tract, and gallbladder  
Discontinuous capillaries are found in: _____, _____, _____   liver, spleen, and bone marrow  
Discontinuous capillaries are also called ______ or _____   sinusoidal capillaries or sinusoids  
__________ of metarterioles control blood flow into the capillary bed   Precapillary sphincters  
Large veins have a thick tunica ______, and a thin tunica _____   adventitia, media
Venous channels in the cranial cavity are lined with _______ cells and are called ______   endothelial, venous or dural sinuses
The two largest lymph vessels are the ____ and ____   thoracic duct, right lymphatic duct
Created by: addimatteo



Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!

"Know" box contains:
Time elapsed:
restart all cards