EXAM 1: the heart & cardiovascular system (socrative)

based on practice socrative

Which of the following would be part of the correct pathway for a drop of blood in the heart: starting at right ventricle?

__________—> pulmonary trunk —> pulmonary arteries —> lungs

Atrioventricular valves are closed by:

pressure in the ventricles

What are the two main arteries supplying the heart?

right and left coronary arteries

The fibrous pericardium…

??

Which of the following is true of both cardiac and skeletal muscle cells:

striated due to overlapping of myofilaments

Which of the following would be correct in following a drop of blood through the circulatory system?

superior vena cava —> right atrium —> right ventricle

During atrial systole, the atria

contract

This part of the heart's conduction system delays the electrical impulse to allow contraction of the atria:

atrioventricular node (AV node)

In the atria, electrical conduction is done through:

gap junctions in muscle cells

Without innervation by the vagus nerve, the heart would…

beat faster at rest

The plateau phase in cardiac muscle cells prevents:

sustained contraction

The spread of an electrical impulse from cell to cell in the heart is called _____ conduction.

myogenic

During a normal EKG, the ventricles contract during the ______.

ST segment

Cardiac output is the combination of…

heart rate and stroke volume

Which of the following would be a correct pathway for a drop of blood: starting at aorta?

_______ —> left coronary artery —> anterior interventricular artery

This structure forms a framework for the valves of the heart:

fibrous skeleton

In the fetal heart, this structure helps blood to bypass the lungs:

foramen ovalis

The visceral layer of the serous pericardium is also the:

epicardium

These are small branches of nerve fibers in the walls of the ventricles:

purkinje fibers

This/these great vessel(s) attach to the right ventricle:

pulmonary trunk

The semilunar valves are opened by:

pressure in ventricles

The "lubb-dupp" sound of the heart is made by the:

valves closing

Stroke volume is the difference between…

end diastolic volume and end systolic volume

An athlete might have a lower heart rate because they have…

a higher stroke volume

This type of vessel has valves to prevent backflow of blood.

veins

Muscle in the tunica media allows blood vessels to…

change the diameter of the lumen

If I am exercising, the blood vessels in my muscles will:

vascodilate to bring more blood to them

The vasa vasorum is located in the:

tunica externa of large vessels

In the lower extermity, the companion blood vessel to the femoral artery is the…

femoral vein

capillaries allow for…

exchange between blood and tissues

Capillary beds…

connect arterioles and venules

The important feature of the tunica intima and endocardium is to be…

smooth to reduce blood cells catching

"Elastic" or "conducting" arteries stretch because…

they are closer to the heart and have more pressure in them

Blood flow into a capillary bed is controlled by the:

precapillary sphincter

The artery that attaches directly to the left ventricle is the…

aorta

The first branch off of the aortic arch is the _________ artery/trunk.

brachiocephalic

The superficial veins in the arm include the:

basilic and cephalic

The ________________ vein drains blood from the trunk wall.

azygous

The hepatic portal system is a collection of ________ going to the ___________.

veins; liver

In the lower extremity, the companion blood vessel to the femoral artery is the:

femoral vein

The subclavian artery, axillary artery and brachial artery are:

1 vessel that changes name during its course in the upper extremity

The azygous vein drains blood from the:

thoracic wall

The right and left coronary arteries branch from the:

aorta

The popliteal artery branches into the:

anterior and posterior tibial arteries

The ___________ carry venous blood into the liver from the digestive tract and the __________ carry cleaned blood from the liver to the inferior vena cava.

hepatic portal vein; hepatic veins

Adequate perfusion of tissue in the body requires:

• blood - to carry nutrients and wastes

• heart - to pump blood

• blood vessels - to carry blood to and from tissue

This structure reduces friction while the heart is moving:

serous pericardium

In the healthy fetal heart, the ________ creates a passageway from the right side to the left side.

foramen ovalis

The fibroskeleton of the heart forms a border between the:

atria and ventricles

The right side of the heart has _______ blood and is part of the ________ circulation.

deoxygenated; pulmonary

This/these great vessel(s) are attached to the left atrium.

pulmonary veins