Anatomy Exam 4 Flashcards
Lies between left atrium & left ventricle;
permit blood flow in one direction; prevents backflow / regurgitation of blood flow back into heart
Bicuspid, aka Mitral Valve
(Heart Functions)
Relaxation; the chambers fill with blood & prepare for next cardiac cycle
Diastole
Artificial measures to cause a person’s immune system to manufacture antibodies;
made with live organisms or ones killed by heat / chemicals
Vaccine
Blood reaches vital organs by more than one route
Arterial anastomosis
In the aortic and carotid bodies;
Detect changes in O2 & CO2 concentrations
Chemoreceptors
All chemical & gas exchange between blood & ISF takes place across
Capillary Walls
Superior Vena Cava delivers ___ blood to ____ atrium
deoxygenated, right atrium
Blood within a ventricle that is pumped during systole
Ejection Fraction
(Antibodies)
Provide resistance against viruses & bacteria;
Enhances phagocytosis, neutralizes toxins
IgG
Number of times heart beats per minute
Heart rate
(Antibodies)
Works with basophils to release histamine & accelerate inflammation
IgE
Protective covering of the outer surface of heart
Serous lining
Adjusts heart rate, strength of cardiac contractions & flow of blood through peripheral tissues
Medulla
(lower half of body)
Brings deoxygenated blood from trunk & legs;
Delivers to right atrium
Inferior Vena Cava
Lies between right atrium & right ventricle;
prevent backflow of blood when heart contracts
Tricuspid Valve
Contains lymphoid tissue that filters blood; part of lymphatic system;
Also functions as part of circulatory system
Spleen
(Blood Pressure)
Bottom number, caused by relaxation of heart muscles
Diastolic
(2 right & 2 left)
Bring oxygenated blood from lungs;
Delivers to left atrium
Pulmonary Veins
Clumping of bacteria by the attached antibodies; makes them easier for phagocytosis
Agglutination
____ are the only blood vessel whose walls permit exchange between blood & surrounding interstitial fluid
Capillaries
(Control of Heart)
Decreases heart rate;
Inhibitory nerve fiber
Parasympathetic Nervous System
Located in groin region;
Drain lower extremities & external genital organs
Inguinal lymph nodes
Largest mass of lymphoid tissue in body;
Contains phagocytes & lymphocytes
Spleen
Returns waste products dissolved in tissue fluid to the blood
Osmosis
Heart has two sets of motor nerve fibers
-One set reaches heart through Vagus nerve & _____, Other set reaches heart through spinal cord & _____
Parasympathetic Nervous System, Sympathetic Nervous System
____ plays key role in immune system development;
Lymphoid stem cells in red bone marrow migrate here where production of mature ___ cells occurs from hormone thymosin
Thymus, T Cells
Recognize foreign antigens
Helper T Cells
Semilunar Valves are located at the ___
Exit
_____ transport nutrients & O2 to cells
Capillaries; Capillary Exchange
Inferior Vena Cava delivers ____ blood to ____ atrium
deoxygenated, right atrium
Visceral pericardium;
Serous membrane covering outer surface of heart
Epicardium
Carry lymph from lymph capillaries to lymph nodes, also carry from Lymph nodes to lymph ducts
Lymph Vessels
Drain part of head & neck
Cervical lymph nodes
____ movement is caused by breathing & skeletal muscle contractions
lymph
Prevent lymph from flowing backward (Especially vessels in extremities)
Lymph Valves
Normal vessel state
Slightly Constricted
Lies between left ventricle & aorta;
prevent backflow of blood into ventricles
Aortic Valve
Body’s defense against infection
T Cells
Cardiac Output in mL/min =
______ X ______
Heart rate x Stroke volume
Produced by the T cells to block viral reproduction
Interferon
(Antibodies)
Crosses placenta during pregnancy, mother provides passive immunity to fetus
IgG