Cardiovascular System
The blood picks up oxygen from what structures of the lungs?
Alveoli
When the left ventricle contracts, blood passes into the _______
Aorta
The most inferior, external part of the heart is called the ___________
Apex
The capillaries connect:
Arteries with veins
The blood vessels whose walls are thin enough to allow the exchange of gases between the blood and tissue fluid are _____.
Capillaries
In an ECG, the P wave is caused by _______
Contraction of atrial muscle fibers
Which of the following is not a risk factor for atherosclerosis?
Diet high in unsaturated fats
The heart muscle is composed of three parts. Which of the following is not a layer of the heart?
Epimysium
The SA node relays nerve impulses into the AV bundle of the interventricular septum and the AV node is responsible for the rhythmic contractions of the heart:
False
True or False Arteries are strong, elastic vessels that carry blood to the heart.
False
Veins that drain the abdominal viscera carry blood directly to the atria.
False
myocardial infarction comes from a blockage in an artery that supplies the:
Heart
The cardiovascular system consists of all of the following except:
Lungs
The hepatic portal system (liver) drains the following organs EXCEPT:
Lungs
Ventricular systole occurs during which interval of an ECG?
QT
In an ECG pattern, the T wave is caused by ________
Recovery of ventricular muscle fibers
The circulatory system works directly with the ___________________ system to exchange oxygen and carbon dioxide in the body.
Respiratory system
Which of the following represents the correct sequence of parts through which blood moves from the vena cava to the lungs?
Right atrium, tricuspid valve, right ventricle, pulmonary valve, pulmonary artery
The "pacemaker" of the heart is the:
SA Node
In an ECG pattern, the P-Q interval indicates how long it takes for the cardiac impulse to travel from the ________
SA node to the AV node
The correct sequence of parts that function to carry cardiac impulses is:
SA node, AV node, Bundle of His, Purkinje fibers
Which of the following structures construct of self-contracting (does not require an I puke originating elsewhere) tissue?
Sinoatrial node
The _______ ________ ________ drains deoxygenated blood from the upper body into the atrium
Superior vena cava
An abnormally fast heart rate is termed by:
Tachycardia
The _______ cavity is the large cavities of the upper body that contains the heart and the lungs.
Thorastic
The atrioventricular valves are the mitral and tricuspid valves.
True
Venues continue from capillaries to form veins, which carry blood back to the atria.
True
Which type of blood vessel serves as a blood reservoir?
Vein
The blood pressure in the systemic arteries is greatest during:
Ventricular systole
The blood pressure on the systemic arteries is greatest during:
Ventricular systole
When the ventricular walls contract, the _______
bicuspid and tricuspid valves close
Blood is supplied to the myocardium by means of the _____ arteries.
coronary
The tissue that forms a loose-fitting sac around the heart is the
pericardium
The pulmonary circuit
sends deoxygenated blood to the lungs