Chapter 10 HW Flashcards
Arteriole is what type of artery
Resistance
Right atrium
Blood enters into this heart structure from the superior and inferior vena cavae
Left atrium
Blood enters into when it returns to the heart from the lungs
Aortic valve
Blood is forced through this when leaving the left ventricle
Left ventricle
Blood leaves the left atrium and enters this chamber of the heart
Bicuspid valve
Blood leaves the left atrium through this valve
Aorta
Blood leaves the left ventricle and travels to this structure
Tricuspid valve
Blood leaves the right atrium and passes through this balance to get to the right ventricle
Deoxygenated blood enters the heart from the body through what structure
Superior and inferior vena cavae
Pulmonary circulation
CO2 is unloaded and O2 is loaded
Systemic circulation
CO2 is loaded and O2 is unloaded
Which type of valve separates the atria from the ventricle
Atrioventricular valve
Which structure does the pulmonary trunk split into, taking blood to the lungs
Pulmonary arteries
Pacemaker of the heart
Sinoatrial node
Sequence of vessels that blood travels as it leaves the heart
Aorta, arteries, arterioles, capillaries, venules, veins, vena cavae
What’s in the endocardium
Tissue that lines the heart’s four chambers
Function of capillaries
Exchange fluids and other materials between the tissues and the blood
Function of the tendinous chords
Attach the valve to the papillary muscle
Function of tunica externa
Anchors the vessel to surrounding tissue
Function of tunica interna
Secretes a chemical to repel platelets so blood can easy flow through the vessel
Pericardium
A fluid-filled, double walled membrane that surrounds the heart
Intercalated discs in cardiac muscle tissue purpose
Intercalated discs allow atrium or ventricles to contract simultaneously, intercalated discs allow fast electrical transmission between cells
Smallest blood vessel
Capillary
Structure that carries the electrical impulse from the AV node toward the apex of the heart
Atrioventricular bundle
What structure fans out from the end of the AV bundle to the wall of the ventricles
Purkinje fibers
External structure that marks the separation of the atria from the ventricles
Coronary sulcus
What structure returns blood from the lungs to the heart
Pulmonary veins
What structure sends the electrical impulse to stimulate the ventricles to contract
Atrioventricular node
What structure separates the right ventricle from the left ventricle
Interventricular septum
What structure takes oxygenated blood from the heart to the rest of the body
Aorta
Cardiac output
Describes the amount of blood ejected by each ventricle each minute
Stroke volume
Describes the amount of blood ejected from the ventricle per beat
Preload
Describes the amount of tension in the myocardium of the ventricular wall
Cardiac reserve
Describes the difference between the cardiac output of a heart at rest and the maximum cardiac output the heart can achieve
Afterload
Describes the pressure in the pulmonary trunk and aorta during diastole
Conducting artery
Carries blood away from the heart
Anastomoses circulation
Involves vessels merging together
What vein drains the lower body, essentially everything below the diaphragm
Inferior vena cava
Tunica interna
Blood vessel layer composed of simple squamous epithelial tissue and fibrous blood issue
Which chambers in the heart pump blood
Ventricles
Which chambers in the heart receive blood
Atria
Electrocardiogram
Diagnostic test that records the heart’s electric activity
Ultrasound
Diagnostic tool that uses sound waves to visualize the heart
Varicose veins
Disorder caused by dysfunctional valves in the veins that allow the back flow and pooling of blood, resulting in enlarged veins
Anatomical structures of the heart combining forms
Ventricul/o (ventricle), pericardi/o (pericardium), atri/o (atrium)
Arter/o
Artery
Atri/o
Atrium
Tachy/
Rapid
Atrial systole
Atria depolarize and contract together creating decreased volume and higher pressure in the atria than the ventricles
Ventricular diastole
Ventricles then repolarize and relax
Adaptation that allows the heart to have oxygen readily available
Cardiac cells are rich in myoglobin
Equation for calculating cardiac output
CO = HR x SV
Ven/o
Vein
Systole
Refers to contraction
Diastole
Refers to relaxation
Blood vessel that has valves to prevent back flow of blood
Vein
Which wave on the ECG shows the depolarization of the atria
P
Which wave on the ECG shows the depolarization of the ventricles
Q, R, S
Which wave on the ECG shows the repolarization of the ventricles
T